The Question the Cases Answer

The Second Amendment Supreme Court cases answer a question that the constitutional text alone leaves open. The amendment states a right in a single sentence, pairs an operative clause declaring the right of the people to keep and bear arms with a prefatory clause concerning a well regulated militia, and supplies no standard for judging a challenged regulation. A court therefore requires a method, and the sequence from 1939 through 2024 is a sequence of methods as much as a sequence of outcomes. Each decision identifies protected conduct, assigns the burden of justification, and specifies the kind of reason that can carry that burden.

The first decision in the sequence, United States v. Miller in 1939, answered a narrow question on an empty evidentiary record. The Court sustained the National Firearms Act as applied to an unregistered short-barreled shotgun because no evidence showed that the weapon bore a reasonable relationship to the preservation or efficiency of a well regulated militia. Lower courts then read that weapon focused ruling as a militia service rule for seven decades, and no further Supreme Court decision on the amendment arrived until 2008. The long interval matters because a precedent confined to one weapon and to an absence of evidence acquired, through lower court reception, the force of a general theory that the opinion itself had never announced in those terms.

In 2008, District of Columbia v. Heller held that the operative clause protects an individual right to possess a firearm for traditionally lawful purposes, such as self-defense in the home, and that the prefatory clause announces a purpose without limiting or expanding that right. McDonald v. City of Chicago held in 2010 that the right applies fully against the states through the Fourteenth Amendment. Caetano v. Massachusetts held in 2016 that each ground on which a state court had sustained a stun gun prohibition contradicted Heller. Between 2008 and 2022, the courts of appeals generally judged regulations through a two step framework that paired a historical scope inquiry with means-end scrutiny, and under that framework the large majority of challenged regulations survived.

In 2022, New York State Rifle and Pistol Association v. Bruen rejected means-end scrutiny and prescribed a different method. When the plain text covers conduct, the Constitution presumptively protects that conduct, and the government must demonstrate that a regulation is consistent with the historical tradition of firearm regulation in the United States, through a well-established and representative analogue assessed for comparable justification and comparable burden. United States v. Rahimi applied that method in 2024 and sustained section 922(g)(8) against a facial challenge. The sequence carries a precise claim. The method changed, not the text. The same statute may be sustained or struck for entirely different reasons than a decade earlier because the framework for judging that statute changed, from militia relationship, to individual right analysis, to balancing, to analogy.

Two qualifications remain in view across the sequence because each qualification sits inside a leading opinion rather than outside the holding. The first qualification comes from District of Columbia v. Heller itself. The 2008 opinion stated that the right is not unlimited and named presumptively lawful categories, including longstanding prohibitions on possession by felons and by persons described in the opinion as mentally ill, laws forbidding carrying in sensitive places such as schools and government buildings, and laws imposing conditions and qualifications on the commercial sale of arms, with footnote 26 stating that the examples were not exhaustive. The second qualification comes from United States v. Rahimi. The 2024 holding states that the historical inquiry requires no precise historical twin and no dead ringer, because the analysis asks whether a regulation is consistent with the principles that underpin the regulatory tradition.

The doctrine developed decision by decision, in a pattern familiar from a constitutional doctrine built one case at a time, and each decision changed the materials that the next decision had to use. A holding about a weapon became a dispute about the nature of the right, a holding about the right became a dispute about incorporation, and a dispute about the lower court framework became a replacement test built on text and tradition. Care in reading a statute against a constitutional standard therefore requires attention to the standard in force for the decision under examination, to the burden that the standard assigns to the government, and to the qualifying passages that travel with the holding. A result detached from its method states only half of a decision.

The Amendment Before the Court: Text, Structure, and a Century of Silence

The Second Amendment was ratified on December 15, 1791, as part of the Bill of Rights. The guarantee consists of a single sentence, and the sentence contains two distinct parts whose relationship became the central textual question in the cases that followed. The full text reads: “A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.” In the terminology that District of Columbia v. Heller, 554 U.S. 570, later supplied, the first part is the prefatory clause and the second part is the operative clause. The prefatory clause states a purpose, the preservation of a well regulated militia as necessary to the security of a free State. The operative clause identifies a right, the right of the people to keep and bear Arms, and commands that the right shall not be infringed. Every later disagreement about the scope of the guarantee began with a disagreement about how those two parts fit together, and about whether the stated purpose in the first part confined, explained, or merely announced the right declared in the second part.

The prefatory clause gave one side of the later dispute a textual anchor of considerable force. The clause does not mention private purposes, household defense, hunting, or any other individual use. The clause names a civic institution, a militia, and connects that institution to a public end, the security of a free State. A reader who treats the opening language as the key to the whole sentence can argue that the amendment as a whole addresses the preservation of that institution, and that the right in the operative clause takes its meaning from the purpose announced at the outset. On that reading, the order of the sentence matters. The drafters placed the militia language first, before any mention of a right, and a court faithful to the structure should allow the first clause to inform the second. Justice Stevens, dissenting in District of Columbia v. Heller, presented a version of that position, arguing that the text, structure, and history showed that the amendment protected a militia-related right. The prefatory clause, in that account, was not surplus language or a decorative preamble. The clause was part of the enacted text, and the clause had to do work in any faithful construction of the sentence.

The operative clause gave the opposing side an anchor of equal textual prominence. The operative clause speaks of a right of the people, phrased as a possession held by the people rather than as a power granted to a government or to a militia as an institution. The clause prohibits infringement of that right in categorical terms, and the clause does not, on its face, condition the prohibition on enrollment in a militia, on service in a militia, or on the use of an arm for a militia purpose. A reader who treats the operative language as controlling can argue that the sentence declares a right in the clearest grammatical position, the main clause, and that an introductory statement of purpose should not be used to rewrite the command that follows. Justice Scalia, writing for the majority in District of Columbia v. Heller, presented a version of that position, holding that the operative clause conferred an individual right and that the prefatory clause announced a purpose but did not limit or expand the operative clause. On that reading, the prefatory clause explained one reason the right was codified, without converting the right into a different and narrower entitlement.

The dispute between those readings was, at its core, a dispute about a familiar problem of construction rather than a dispute about the words themselves. Both sides quoted the same sentence. Both sides accepted that the sentence contained a prefatory clause and an operative clause. The disagreement concerned the interpretive weight each part should receive. If a prefatory statement of purpose limits the operative language that follows it, the militia language shapes the reach of the right, and protection follows the purpose. If a prefatory statement announces a purpose without limiting the operative language, the right stands on the terms the operative clause states, and the stated purpose supplies context without supplying a condition. The amendment itself does not contain a separate resolving clause, a definition of militia, a definition of Arms, or a statement of the standard a court should apply when the two parts point in different directions. The text left that work to adjudication, and for a very long period adjudication did not arrive. The silence that followed ratification therefore mattered as much as the text, because the questions the structure raised received no authoritative answer from the Supreme Court across the entire nineteenth century and across the first four decades of the twentieth century.

A further structural feature of the Bill of Rights framed the earliest litigation, and that feature concerned not the internal division of the sentence but the government to which the sentence applied. The Bill of Rights originally restrained only the federal government. The Supreme Court stated that proposition in Barron v. Baltimore, 32 U.S. 243, decided in 1833. Barron v. Baltimore did not concern firearms, and the decision did not interpret the language of the guarantee to keep and bear arms. The importance of the decision for the later firearms cases lay in the general rule the decision established for the first amendments as a group. A provision in the Bill of Rights, as originally understood, limited the national government and left state governments outside the restraint. A claimant who challenged a state law under the guarantee therefore faced a threshold difficulty that had nothing to do with militias, with the type of arm involved, or with the purpose for which an arm was kept. The claim failed at the level of applicability before a court reached any question about scope.

That threshold difficulty survived the nineteenth century in the firearms context because the Court applied the Barron v. Baltimore framework directly to the amendment in two decisions, neither of which undertook the incorporation inquiry that later doctrine developed. The first was United States v. Cruikshank, 92 U.S. 542, decided in 1876. United States v. Cruikshank held that the amendment restrains only the federal government and leaves the states free to regulate. The holding addressed the identity of the government bound by the guarantee. The holding did not rest on a finding that the right was collective rather than individual, and the decision should not be overstated as a collective right holding. No incorporation analysis existed at that date, and the Court conducted no inquiry of the kind later used to decide whether a provision of the Bill of Rights applies to the states through the Fourteenth Amendment. The decision resolved the case on the federal character of the restraint, in the line of Barron v. Baltimore, and the broader questions about the nature of the right remained untouched by the reasoning.

The second decision was Presser v. Illinois, 116 U.S. 252, decided in 1886. Presser v. Illinois upheld an Illinois law restricting armed parading by private military organizations. The Court again held that the amendment limits only the federal government. The Court also treated the right as connected to the preservation of public order as the Court then understood that connection. The reasoning, like the reasoning in United States v. Cruikshank, stopped short of the analysis later cases would require. Presser v. Illinois did not conduct a modern incorporation inquiry, in the sense of an inquiry into whether the right ranked among the fundamental rights that the Fourteenth Amendment protects against state action. The decision also did not hold, in terms, that the amendment protects only a collective interest and confers nothing on individuals. A precise account of Presser v. Illinois keeps the decision at the strength of the opinion. An Illinois restriction on armed parading by private military organizations survived, the amendment was held to restrain the federal government alone, and the state law stood. The general scope of the right, the status of possession in the home, the treatment of particular categories of arms, and the proper construction of the prefatory clause all remained undecided by the holding.

Between those two firearms decisions, and in a case that concerned a different subject altogether, the Court decided the question that would determine the route incorporation later took. The Slaughter-House Cases, 83 U.S. 36, decided in 1873, read the Privileges or Immunities Clause of the Fourteenth Amendment narrowly. The narrow reading mattered far beyond the dispute that produced the decision, because the Privileges or Immunities Clause was the textual provision that might otherwise have served as the vehicle for applying the guarantees of the Bill of Rights to the states. After The Slaughter-House Cases, that vehicle carried far less than a broad reading would have allowed. The consequence unfolded over a long period and reached the firearms cases directly in McDonald v. City of Chicago, 561 U.S. 742. In McDonald v. City of Chicago, the plurality applied the Due Process Clause of the Fourteenth Amendment under the selective incorporation doctrine and expressly declined to revisit the reading of the Privileges or Immunities Clause that The Slaughter-House Cases had adopted. Incorporation of the guarantee therefore proceeded through the Due Process Clause, not because the text of the Fourteenth Amendment pointed only in that direction, but because the precedent governing the alternative clause had narrowed that alternative almost a century and a half earlier.

Justice Thomas, concurring in part and concurring in the judgment in McDonald v. City of Chicago, supplied the fifth vote for applying the right to the states and rested that conclusion on the Privileges or Immunities Clause, arguing that the right was a privilege of United States citizenship and that the line of authority beginning with The Slaughter-House Cases rested on a misreading of the Fourteenth Amendment. The division in McDonald v. City of Chicago over the correct clause illustrates the lasting effect of the 1873 decision. A narrow construction adopted in a case about an unrelated economic regulation structured the doctrinal path available in 2010, forced the plurality to build its holding on due process, and left the privileges or immunities route supported by a single justice whose vote was necessary to the judgment but whose rationale commanded no majority. The early history of the guarantee in the Supreme Court thus contains two separate forms of indirection. The firearms decisions of the nineteenth century resolved cases without defining the right, and the one decision that shaped the future of the right most profoundly did so in a case that was not about firearms at all.

The silence that followed Presser v. Illinois was complete at the level of Supreme Court merits adjudication. Between the nineteenth century decisions and 1939, the Supreme Court decided no Second Amendment merits case. No opinion from that period construed the prefatory clause against the operative clause. No opinion defined the class of arms that the operative clause covered. No opinion decided whether the right protected possession by an individual unconnected with militia service. No opinion applied a standard of review to a federal firearms regulation challenged under the guarantee, and no opinion revisited the holdings that confined the amendment to the federal government. The questions that District of Columbia v. Heller answered in 2008, and that McDonald v. City of Chicago answered in 2010, sat unanswered through decades in which the only Supreme Court statements on the amendment were the applicability holdings of United States v. Cruikshank and Presser v. Illinois and the general rule of Barron v. Baltimore that stood behind both holdings.

The absence of a merits decision across that span had a practical consequence for the development of doctrine, quite apart from the outcome in any individual dispute. Doctrine ordinarily develops by accumulation, as one decision refines the test an earlier decision announced and a later decision applies the refined test to a new regulation. The guarantee had no such sequence in the Supreme Court before 1939. A litigant, a legislature, or a lower court searching for guidance found a text with two clauses in evident tension, a general rule that the Bill of Rights bound only the national government, two decisions applying that rule to the amendment, and a Fourteenth Amendment decision that had narrowed one possible route to state applicability without deciding the firearms question. Nothing in that body of material settled whether the stated militia purpose limited the operative right, whether possession for private purposes fell within the operative clause, or how a court should evaluate a regulation that burdened keeping or bearing arms in some measure without abolishing the practice altogether. Each of those questions awaited a case that squarely presented a federal regulation and a record on which the Court was prepared to rule.

The vocabulary used to describe the textual problem also arrived late. The labels prefatory clause and operative clause, which organize the analysis in District of Columbia v. Heller, gave courts and commentators a shared shorthand for the two parts of the sentence, but the shorthand itself settled nothing about the relationship between the parts. A label can identify the grammatical position of a clause without deciding the interpretive weight the clause carries. The majority in District of Columbia v. Heller treated the prefatory label as compatible with a purpose that announced a reason for codification without imposing a limit. The dissent of Justice Stevens treated the same opening language as substantive direction about the character of the right. The persistence of that disagreement, conducted in a vocabulary the nineteenth century decisions had not supplied, underlines the central feature of the early record. The early cases decided who was bound, in Barron v. Baltimore, United States v. Cruikshank, and Presser v. Illinois. The early cases did not decide what the guarantee protected, against what kinds of regulation, or under what standard a challenged law should be judged.

The period before 1939 therefore left the amendment in a distinctive position among the guarantees of the Bill of Rights as the Supreme Court had treated the provision by that date. The amendment had a text, and the text had not been construed in a merits holding. The amendment had a stated purpose, and the legal effect of that purpose had not been determined. The amendment had been held inapplicable to the states, and the reasoning supporting that result belonged to an era before incorporation doctrine existed in a developed form. The amendment had also been affected, indirectly and powerfully, by a construction of the Fourteenth Amendment that would channel every later incorporation argument into the Due Process Clause unless and until the Court revisited The Slaughter-House Cases, a step the plurality in McDonald v. City of Chicago later declined to take. When the Court finally returned to the guarantee in 1939, in United States v. Miller, 307 U.S. 174, the Court confronted a provision whose operative scope remained, at the level of Supreme Court precedent, essentially unwritten, and the opinion in that case, confined to the absence of evidence about a particular weapon, added far less definition than the length of the preceding silence might have led a reader to expect.

Miller and the Weapon the Record Never Described

United States v. Miller, 307 U.S. 174, decided on May 15, 1939, arrived at the Supreme Court in a posture that shaped everything the opinion said and everything the opinion left unsaid. The judgment was unanimous, the opinion was written by Justice McReynolds, and Justice Douglas took no part in the decision. The case presented a federal indictment, a district court ruling that sustained a demurrer against that indictment, and a direct appeal by the United States. No merits ruling from a trial stood behind the appeal, and no evidentiary record describing the weapon at issue stood behind the constitutional question. That combination matters because the opinion, read on its own terms, answered a narrow question on an empty evidentiary foundation. The Court reversed the district court, rejected a separate reserved powers objection, and remanded for further proceedings. The opinion did not announce a general account of the Second Amendment, did not define the full scope of the guarantee, and did not resolve how protection might apply to a weapon supported by a developed record. Precision about those limits is the starting point for any accurate account of the decision.

What did Miller actually decide?

United States v. Miller reversed a dismissal and held only that, on a record containing no evidence linking a short-barreled shotgun to militia preservation or efficiency, the Court could not say the Second Amendment guaranteed a right to keep and bear that instrument, and it remanded for further proceedings.

The charge arose under the National Firearms Act of 1934. Jack Miller and Frank Layton were indicted for transporting in interstate commerce an unregistered 12-gauge shotgun with a barrel of less than eighteen inches in length. The indictment rested on two related failures recorded in the opinion: the shotgun had not been registered, and the transport had occurred without a stamp-affixed written order as the statute required. The opinion therefore tied the constitutional dispute to a particular instrument with a particular physical characteristic, barrel length below eighteen inches, moved across state lines under a federal registration regime. The Court did not confront possession of firearms in the abstract, and the opinion did not frame the question as a general challenge to every part of the 1934 Act. The weapon, the transport, the registration defect, and the written order defect formed the whole factual predicate that the indictment supplied. Every later proposition drawn from the case has to be measured against that confined predicate, because the reasoning that followed was built to answer the challenge that the indictment and the demurrer had placed before the Court.

The district court for the Western District of Arkansas sustained a demurrer and quashed the indictment, holding that the National Firearms Act offended the Second Amendment. A ruling of that kind ended the prosecution at the pleading stage, before any trial record could describe the shotgun, its characteristics, or any relationship between that type of weapon and a well regulated militia. The sequence is central to the opinion. Because the district court accepted the constitutional objection at the demurrer stage, the Supreme Court received a legal ruling without an evidentiary account of the instrument. No testimony had established how such a shotgun was used, whether any military body used such a weapon, or whether possession of that type of shotgun bore any connection to militia preservation or efficiency. The government carried the appeal from a dismissal founded on the constitutional objection alone, and the justices had to decide whether that objection could stand on the record that existed. The absence of description was not a side detail added by later commentators. That absence supplied the very ground on which the majority opinion rested its operative sentence.

The United States appealed directly to the Supreme Court under the Criminal Appeals Act. That route explains why a case that had produced no trial and no factual findings reached the justices as a pure contest over the district court ruling. The question carried upward was whether the indictment had been correctly quashed on Second Amendment grounds, together with the separate reserved powers objection that the opinion also addressed. Direct appeal compressed the litigation: the district court had held a federal statute offensive to the amendment, and the federal government asked the Supreme Court to reverse that holding. No intermediate court of appeals opinion intervened, and no additional record was created along the way. The posture also fixed the burden of the analysis. The Court approached the case as a review of a dismissal, assessed the constitutional claim on the submissions and materials properly before the justices, and concluded that the district court ruling could not stand. The reversal restored the prosecution posture that the demurrer ruling had terminated, subject to the further proceedings ordered on remand.

The appellee side of the record was empty. The opinion records the notation “No appearance for appellees.” Jack Miller and Frank Layton filed no brief and presented no argument, and the case was decided on the submissions of the government alone. That fact imposes a discipline on any reading of the opinion. The justices heard one side of the adversarial presentation in a case that turned on a missing evidentiary showing, and the opinion contains no engagement with a defense brief developing the history of the amendment, the character of the weapon, or a competing account of militia service. The empty appellee side does not change the formal authority of the judgment, which reversed the district court in full. The empty record does, however, explain the texture of the reasoning. The opinion is short in its treatment of the central question because the central factual proposition, a reasonable relationship between the described shotgun and militia efficiency, had been supported by no evidence and defended by no brief. Argument that might have tested the government position, offered proof about the weapon, or pressed a broader reading of the guarantee never entered the record the Court described.

The holding rested on one operative sentence, and the sentence deserves quotation in full because paraphrase has repeatedly carried the decision farther than its words travel. The Court wrote: “In the absence of any evidence tending to show that possession or use of a ‘shotgun having a barrel of less than eighteen inches in length’ at this time has some reasonable relationship to the preservation or efficiency of a well regulated militia, we cannot say that the Second Amendment guarantees the right to keep and bear such an instrument.” Each element of that sentence limits the next element. The opening clause names an absence of evidence. The middle clause identifies the proposition that evidence would have had to support, some reasonable relationship to the preservation or efficiency of a well regulated militia. The closing clause states a judicial inability to declare a guarantee on that record, directed at such an instrument rather than at firearms as a class. The sentence is cast in negative form. The Court did not state that proof of a militia relationship would have produced a different result in a later case, and the sentence did not purport to catalogue the arms, purposes, or persons that the amendment might cover on a fuller record.

The phrase “such an instrument” performed quiet but decisive work. By anchoring the conclusion to the shotgun described in the indictment, the opinion tied protection analysis to the type of weapon under challenge and to the evidence, or absence of evidence, concerning that type. The Court did not hold that the amendment failed to protect any other firearm, and the opinion supplied no list of protected or unprotected weapons. Equally, the reference to preservation or efficiency of a well regulated militia identified the relationship that the missing evidence would have had to establish for the instrument at issue. The opinion did not convert that relationship into a test of the status of the individual possessor. Nothing in the operative sentence asked whether Jack Miller or Frank Layton served in a militia, held any militia enrolment, or possessed the shotgun in connection with any service. The question, as the sentence frames the question, concerned the weapon and the demonstrated relationship between that weapon and militia preservation or efficiency. Later disagreement over the meaning of Miller has often turned on exactly that distinction between a weapon-focused sentence and a service-focused reading imposed on the sentence by subsequent courts.

The Court also declined to take judicial notice that such a shotgun was ordinary military equipment. That refusal closed the one route by which the missing factual showing might have been supplied without evidence in the record. Judicial notice would have allowed the justices to treat a military character for the short-barreled shotgun as a fact requiring no proof. The Court refused that step, and the refusal left the evidentiary gap intact. The logic of the opinion therefore runs in a strict sequence: no evidence in the record tended to show a reasonable relationship to militia preservation or efficiency, the Court would not supply the missing proposition through judicial notice, and on that combined foundation the justices could not say that the amendment guaranteed a right to keep and bear the instrument. The refusal also matters for the scope of the holding. A court that declines to notice a fact has not found the opposite fact. The opinion did not find that short-barreled shotguns lacked military use as an established matter of fact; the opinion held that the proposition had not been shown and would not be assumed.

A separate ruling disposed of the reserved powers objection. The Court rejected the argument grounded in the powers reserved to the states, citing Sonzinsky v. United States, 300 U.S. 506 (1937). That citation placed the objection outside the Second Amendment analysis and treated the federal enactment as sustainable against the reserved powers challenge on the authority of Sonzinsky. The point is easy to lose when accounts of Miller compress the opinion into the single operative sentence on the amendment. The judgment reversed the district court on the constitutional attack as a whole, and the reserved powers ruling formed part of that reversal. Keeping the two rulings separate preserves the structure of the opinion. The Second Amendment ruling turned on the absence of evidence about the weapon. The reserved powers ruling turned on precedent concerning federal power. Neither ruling supplied reasoning for the other, and neither ruling expanded the narrow evidentiary basis on which the amendment question had been decided.

The disposition was reversal and remand for further proceedings. Remand followed naturally from the ground of decision. A holding founded on an absence of evidence in the record before the Court resolved the appeal from the demurrer ruling; the remand returned the case to the lower court process rather than announcing a final and comprehensive judgment about the amendment in every application. The opinion decided the case on the absence of evidence about the relationship between the weapon and militia efficiency. That formulation, stated at the strength the opinion supports, leaves the decision narrower than many later summaries suggested. The Court held that the district court had erred in quashing the indictment on the record and arguments presented. The justices did not try the facts, did not receive the missing proof, and did not declare the full content of the right. Any account that treats the remand as an afterthought misstates the decision, because the evidentiary ground and the remand belong together: an appeal decided for want of a showing was sent back for the proceedings that the demurrer ruling had cut off.

What Miller did not decide is as definite as what the opinion held. The decision did not hold that the Second Amendment protects only militia service. The opinion did not announce a collective right. The opinion did not examine the full scope of the amendment, a point that District of Columbia v. Heller later made expressly. Those three negations are not qualifications added for balance; each negation corresponds to a proposition that later readers attributed to the case and that the 1939 opinion never stated. The operative sentence conditioned its conclusion on missing evidence about a particular weapon. A condition of that kind cannot bear the weight of a categorical rule about every possessor, every purpose, and every arm. The opinion also drew no line between military and nonmilitary purposes as a general matter, announced no enrolment requirement for exercise of the right, and set out no historical survey of the amendment comparable to the surveys that later opinions produced. The narrowness is textual and structural at once: one weapon, one missing relationship, one government-only presentation, one reversal, and one remand.

For most of the twentieth century, lower courts read Miller as tying protection to militia service, and that reading was the settled lower court position. The reading was dominant in the courts of appeals, and the Supreme Court decided no further Second Amendment case until 2008. That long interval allowed the lower court reading to harden into the governing understanding in the courts that actually resolved firearms challenges, even though the reading reached beyond the operative sentence that Miller had written. A service-based interpretation had practical advantages for a court applying a short and ambiguous precedent: the interpretation offered a clear threshold, tied the guarantee to the militia language in the prefatory clause, and disposed of many claims without an inquiry into the character of a particular weapon. The dominance of that interpretation is a fact about the reception of Miller in the lower courts during the decades after 1939. Reception and holding are different objects. The settled lower court position described how judges applied the precedent; the position did not rewrite the 1939 opinion, enlarge the operative sentence, or supply the evidentiary findings that the original record lacked. Careful treatment keeps those layers apart.

Heller and the dissent written by Justice Stevens in Heller later read Miller in opposite directions, and each reading must be stated at the strength the later opinions gave that reading. The Heller majority read Miller as turning on the type of weapon rather than on the identity or militia enrolment of the possessor. On that account, the 1939 Court had asked whether the arm at issue bore a reasonable relationship to militia preservation or efficiency, a question about the weapon, and had not held that a claimant had to serve in a militia to invoke the guarantee. The majority also treated Miller as a decision that had not examined the full scope of the amendment. Read together, those two propositions made Miller compatible with an individual right analysis in Heller: the earlier case imposed, at most, a weapon-based limit and left the broader question of the right open. That is the Heller majority reading of the precedent, attributed to the majority as a reading, and not a proposition that the 1939 opinion announced in those terms.

Justice Stevens, in dissent in Heller, read the same precedent in the opposing direction. The dissent read Miller as having settled that the amendment protects the right to keep and bear arms for certain military purposes without curtailing legislative power over nonmilitary use. On that account, Miller had resolved the central question in favor of a militia-related understanding, and the Heller majority departed from precedent by adopting an individual right unconnected with militia service. The disagreement between the majority and the dissent was therefore not a disagreement over the words of the operative sentence, which both sides could quote. The disagreement concerned the proposition that the sentence, the disposition, and the decades of lower court reliance had established. The majority located the holding in the weapon-specific and evidence-conditioned terms of the sentence. The dissent located the holding in a settled militia-related rule that the sentence was understood to have announced. Stating the dispute in that form preserves the attribution that the subject requires. Miller itself adopted neither later formulation as a broader proposition; the broader formulations belong to the competing readings offered in 2008.

The enduring difficulty of Miller flows from the distance between a confined opinion and the large questions later placed on that opinion. The 1939 Court reversed a demurrer ruling, refused to supply a missing fact through judicial notice, rejected a reserved powers objection on the authority of Sonzinsky, and remanded. The opinion gave later courts a weapon-focused sentence, an evidentiary condition, and no general theory of the amendment. Lower courts converted that material into a militia-service rule that governed for decades, and the justices in Heller divided over whether that conversion had been faithful to the precedent or had mistaken reception for holding. An account faithful to the record keeps each step in the correct place: indictment, demurrer, direct appeal, empty appellee presentation, operative sentence, refusal of judicial notice, reserved powers ruling, remand, lower court reception, and the opposing readings in Heller. Placed in that order, Miller appears as the opinion actually delivered in 1939, a decision about a weapon the record never described, rather than as a slogan for either side of a dispute that the opinion itself never joined in general terms. That discipline also governs the weight given to silence in the opinion, because silence about service, enrolment, purposes, and other weapons cannot support a categorical rule, and a remand entered for want of evidence cannot substitute for findings that no court made on a record that no party built.

Heller: An Individual Right, Named Limits

District of Columbia v. Heller, 554 U.S. 570, decided June 26, 2008, presented the Supreme Court with District of Columbia provisions that operated together to control the keeping of firearms in the home. One set of provisions prohibited the registration of handguns, and because registration was the route by which possession became lawful, the prohibition on registration functioned as a prohibition on possession. A separate provision required lawfully owned firearms in the home to be kept unloaded and disassembled or bound by a trigger lock at all times. The majority and the dissents answered the same challenge through different readings of the constitutional text, of United States v. Miller, and of the relationship between an enumerated right and legislative regulation, and the division among the justices tracked those methodological differences as closely as the result itself.

The decision was five to four. Justice Scalia wrote the majority opinion, joined by Chief Justice Roberts and Justices Kennedy, Thomas, and Alito. Justice Stevens filed a dissent joined by Justices Souter, Ginsburg, and Breyer. Justice Breyer filed a separate dissent joined by Justices Stevens, Souter, and Ginsburg. The two dissents proceeded from distinct premises. The Stevens dissent disputed the majority reading of text, structure, history, and precedent, and maintained that the amendment protected a militia-related right. The Breyer dissent proceeded on an assumption made for purposes of argument, namely that an individual self-defense right existed, and contended that the District provisions survived an interest-balancing inquiry in any event.

What did Heller strike down?

The Court struck down the District of Columbia ban on registration, and therefore possession, of handguns, and the District requirement that lawfully owned firearms in the home remain unloaded and disassembled or bound by a trigger lock, because that requirement prevented use for self-defense in the home.

The handgun provisions barred registration, and the structure of that bar gave it a reach beyond paperwork. A resident could not register a handgun, and possession of an unregistered handgun was not lawful, so the registration rule closed the lawful route to keeping a handgun in the home. Justice Scalia, writing for the majority, treated the provisions at the level of their practical operation rather than at the level of their administrative form, and the holding addressed the combined effect of the registration prohibition and the possession consequence that followed from it. That framing explains why the majority described the measure as a handgun ban instead of as a licensing rule with a restrictive outcome.

The storage provision applied to firearms that the District did allow a resident to own lawfully. It required those firearms, kept in the home, to remain unloaded and disassembled or bound by a trigger lock at all times. The phrase “at all times” did the decisive work in the majority analysis, because the requirement contained no exception for a moment of defensive need inside the home. On the majority reading, a resident who complied with the storage rule kept a firearm in a condition that prevented its use, and a resident who rendered the firearm operable for defensive use departed from the rule. The majority therefore considered the handgun ban and the storage requirement as related parts of a single regulatory scheme directed at the home, one part barring an entire category of arm from lawful possession and the other part prescribing a condition of inoperability for the arms that remained permitted, and each part fell for a reason that grew out of the core protection the majority identified.

The holding, as Justice Scalia stated it, was that the Second Amendment protects an individual right to possess a firearm unconnected with service in a militia, and to use that arm for traditionally lawful purposes, such as self-defense within the home. Each element of that sentence carried a boundary as well as a protection. The right belonged to an individual, and possession did not depend on a connection to militia service. The protected use was tied to traditionally lawful purposes, and the example the opinion gave was self-defense within the home, a setting the opinion treated as central. The holding did not rest on a claim that every use of a firearm in every place received the same protection, and the opinion later devoted sustained attention to limits that the majority said the holding left undisturbed.

The textual analysis began with the division of the amendment into two clauses. In the terminology that Justice Scalia adopted, the first clause is the prefatory clause, which reads, “A well regulated Militia, being necessary to the security of a free State,” and the second clause is the operative clause, which reads, “the right of the people to keep and bear Arms, shall not be infringed.” The majority treated the operative clause as the clause that conferred the right, and it read that clause to confer an individual right. The subject of the operative language was “the people,” and the activity the language named was keeping and bearing arms, and the majority concluded that the clause protected possession and use by individuals for traditionally lawful purposes rather than possession only as an incident of militia service. Because the operative clause supplied the rule of decision, the majority measured the District provisions against the individual right that clause announced.

The prefatory clause received a different function in the majority analysis. Justice Scalia wrote that the prefatory clause announced a purpose for the amendment but did not limit or expand the scope of the operative clause. The militia purpose therefore explained one reason the framers of the amendment valued an armed populace and the security of a free state, without supplying a condition that an individual possessor had to satisfy before the right applied. The majority rejected a construction under which the prefatory clause confined the right to militia service because that construction assigned the opening clause a limiting power the majority said it did not possess, and the majority likewise rejected any suggestion that the prefatory clause expanded the operative right beyond the arms and purposes the operative analysis supported.

Justice Scalia connected the two clauses by treating their relationship as one of declaration and operation. The prefatory clause declared the civic purpose that the amendment served, and the operative clause secured the right through which, among other lawful ends, that purpose could be served. The interpretive work stopped short of restriction, however, and that stopping point was the hinge of the case. The Stevens dissent assigned the same clause a limiting force and read the amendment as a whole to protect a militia-related right, so the disagreement between the majority and that dissent was in substantial part a disagreement over the grammatical and structural relation between the two clauses and over the historical record that each side brought to that relation.

The majority also fixed a limitation drawn from the type of weapon. The sorts of weapons protected, Justice Scalia wrote, are those “in common use at the time,” and the opinion tied that limitation to the historical tradition of prohibiting the carrying of “dangerous and unusual weapons.” The limitation performed two functions in the analysis. It identified a class of arms within the protection by reference to common use, and it preserved a tradition of prohibiting a different class of arms identified by the paired characteristics of danger and unusualness. Conversely, common use placed a weapon within the class the opinion described as protected, and the District prohibition on handguns was assessed against a framework in which the type of arm mattered alongside the identity of the possessor and the purpose of the possession.

The reading of Miller followed from the same emphasis on weapon type. Justice Scalia read United States v. Miller as turning on the type of weapon involved rather than on the identity or militia enrollment of the possessor. In Miller, the Court had declined to say that the amendment guaranteed a right to keep and bear a short-barreled shotgun in the absence of evidence that possession or use of such a weapon had some reasonable relationship to the preservation or efficiency of a well regulated militia. The Heller majority treated that reasoning as a weapon-focused inquiry, directed at whether the instrument fell within the class of arms the amendment protected, and the majority also made expressly the point that Miller did not examine the amendment’s full scope. That reading prevented Miller from supplying a general militia-service test for every claimant, and it allowed the Heller majority to decide the individual-right question as a matter that Miller had left open while accepting the earlier decision on its own weapon-specific terms.

Against that framework, the handgun ban failed because it prohibited possession of a category of arm by individuals in the home for a traditionally lawful purpose the opinion placed at the center of the right. The ban was categorical in operation, since the registration prohibition foreclosed lawful possession altogether rather than regulating the manner in which a handgun could be kept or the persons who could keep one. The majority holding struck the ban down, and the reasoning left no intermediate step in which a total prohibition of possession in the home could be recast as a condition on possession. For that reason the majority treated the handgun provisions as a direct conflict with the operative clause as the majority had construed it, not as a regulation at the margin of protected conduct that called for a balancing of interests, a method Justice Breyer proposed in dissent and the majority declined to adopt.

The storage requirement fell with the ban, although it reached only firearms that District law permitted, and the reason was functional rather than categorical. Justice Scalia wrote that the requirement made it impossible for citizens to use firearms for the core lawful purpose of self-defense in the home. The majority therefore treated the storage rule as a prohibition on the functional exercise of the core right inside the home, even though the rule was written as a condition on storage. The resident retained nominal possession of the firearm, yet the condition prescribed by the District stripped that possession of the use that the majority identified as the central lawful purpose, and the holding struck the requirement down on that ground.

Immediately after announcing the protected right and its application, Justice Scalia stated the qualification in terms that the opinion repeated as a limit on the holding’s reach. “Like most rights, the right secured by the Second Amendment is not unlimited,” the opinion stated. The qualification was not presented as a reservation left for later cases to define from nothing. The opinion named specific categories of regulation, described them as longstanding, and stated that nothing in the opinion should be taken to cast doubt on them, and the care with which the categories were worded made the qualification a part of the holding’s stated boundaries rather than an afterthought appended to it.

The first named categories concerned persons. The opinion stated that nothing in it “should be taken to cast doubt on longstanding prohibitions on the possession of firearms by felons and the mentally ill.” The statement described those prohibitions as longstanding, and it removed them from any doubt that the reasoning on the handgun ban might otherwise have generated. The opinion did not define the boundaries of either category, did not enumerate the offenses or conditions that placed a person within either prohibition, and did not set out a test for evaluating a prohibition that reached a different class of persons. Its work was narrower and more deliberate. It recorded that prohibitions of that described kind stood outside the doubt created by the decision, and it characterized the measures that followed in the same sentence as presumptively lawful regulatory measures, a characterization that signalled preservation without converting the list into an adjudication of any particular statute.

The second named category concerned places. The opinion included “laws forbidding the carrying of firearms in sensitive places such as schools and government buildings” within the set of measures the decision did not cast into doubt. The examples given were schools and government buildings, and the broader term the opinion used was “sensitive places,” a term the opinion did not define exhaustively. The formulation therefore preserved laws of that kind at the level of generality the opinion stated, naming the category and two illustrative locations, and it did not attempt a catalogue of locations or a criterion by which an unlisted location would qualify.

The third named category concerned commerce. The opinion included “laws imposing conditions and qualifications on the commercial sale of arms” among the measures left undisturbed. That category differed from the first two because it addressed transactions rather than a class of possessors or a class of places, and it confirmed that an individual right to possess a firearm for a traditionally lawful purpose coexisted, in the majority framework, with regulation of the market through which firearms are sold. The opinion did not specify which conditions and qualifications fell within the preservation, did not approve any particular commercial requirement by name, and did not state a standard for a commercial condition so burdensome that it might cross into a prohibition on possession.

Footnote 26 governed the status of the entire list. Attached to the passage identifying the presumptively lawful measures, the footnote stated in substance that the majority identified those measures only as examples and that the list did not purport to be exhaustive. That caveat cut in two directions. It prevented the three named categories from being read as a ceiling on permissible regulation, because a list offered as examples leaves room for other measures that other reasoning might sustain. It also prevented the list from being read as a holding that each example had been tested and upheld against a specific challenge, because the opinion described the measures by category and recorded that the decision cast no doubt on them. The correct reading of the qualification therefore holds both points together: the categories were presumptively lawful, the examples were not exhaustive, and the opinion decided neither the validity of any unlisted measure nor the details of any listed category beyond the stated disclaimer.

Justice Scalia added a further historical note on the manner of carry. The opinion observed that the majority of nineteenth-century courts had held prohibitions on concealed weapons lawful. The note therefore formed part of the qualification the opinion attached to the right, rather than part of the analysis under which the District provisions were struck down. The opinion did not convert the note into a holding on any particular carry regulation, and it did not address public carry as the general subject that later litigation would present. Its stated proposition was historical and bounded: most nineteenth-century courts to consider the question had sustained concealed-carry prohibitions, and that record formed part of the background that made the right, in the majority formulation, a qualified one.

The opinion gathered the qualification into a general statement of scope. The right, Justice Scalia wrote, was not a right to keep and carry any weapon whatsoever in any manner whatsoever and for whatever purpose. Each element of that formulation answered a possible extension of the holding. “Any weapon whatsoever” answered an extension across weapon types, against the limitation to arms in common use and the tradition concerning dangerous and unusual weapons. “In any manner whatsoever” answered an extension across modes of keeping and carrying, against the historical treatment of concealed carry and the preserved regulation of sensitive places. “For whatever purpose” answered an extension across ends, against the holding’s own anchoring in traditionally lawful purposes such as self-defense within the home.

Justice Stevens, in a dissent joined by Justices Souter, Ginsburg, and Breyer, rejected the majority construction at its foundation. He argued that the text, structure, and history of the amendment showed that it protected a militia-related right, and on that reading the prefatory clause was not a purpose announcement without limiting force but a statement that identified the object the operative clause served. Justice Stevens maintained that the amendment protected the right to keep and bear arms for certain military purposes and that it did not curtail legislative power over nonmilitary use and possession. The dissent therefore accepted the District provisions as an exercise of regulatory authority over a subject the amendment left to the legislature, because the possession the majority protected, possession unconnected with militia service for private self-defense in the home, fell outside the right as Justice Stevens understood it. The dissent and the majority thus disagreed not only on the outcome but also on the unit of analysis, each side reading the whole amendment while assigning opposite weight to its opening clause.

Justice Stevens also grounded the dissent in precedent, and he read Miller as having settled the central question. On his reading, Miller established that the amendment protects the right to keep and bear arms for certain military purposes without curtailing legislative power over nonmilitary uses, and the dissent criticized the majority for departing from precedent by treating Miller as a narrow decision about weapon type. The contrast between the two readings of Miller was complete. Justice Scalia read the earlier decision as an inquiry into the character of the short-barreled shotgun and as a decision that had not examined the full scope of the amendment, while Justice Stevens read the earlier decision as a settlement of the relationship between the right and militia service.

Justice Breyer filed a separate dissent, joined by Justices Stevens, Souter, and Ginsburg, that began from a different assumption. He argued that even assuming an individual self-defense right, the Court should apply an interest-balancing inquiry to a regulation challenged under the amendment. Under such an inquiry, a court would weigh the burden a regulation placed on the protected interest against the governmental interests the regulation served, and the outcome would depend on that assessment rather than on a categorical conclusion drawn from the type of regulation alone. Justice Breyer’s proposed method therefore disagreed with the majority approach even on the majority’s own premise about the existence of an individual right, because the majority struck the District provisions down on the basis of the conflict between those provisions and the core protected conduct without subjecting that conflict to a balancing of the interests on each side.

Applying the proposed inquiry, Justice Breyer concluded that the District of Columbia laws were a permissible response to urban gun violence. The District legislature had addressed the problem of gun violence in an urban setting through a handgun prohibition and a storage requirement, and the dissent treated those legislative judgments as entitled to weight in the balance against the burden the laws imposed on any assumed self-defense interest. The conclusion followed the method: because the inquiry asked whether the regulation was a permissible response to the problem the legislature confronted, measured against the interest burdened, the dissent answered that the District measures survived. The separate character of the dissent mattered for the state of the doctrine after the decision.

The decision left a defined structure in place of the disagreement it resolved. Heller held that the operative clause conferred an individual right to possess a firearm unconnected with militia service for traditionally lawful purposes, that the prefatory clause announced a purpose without limiting or expanding that right, that the protected arms were those in common use, and that the District handgun ban and the storage requirement that made defensive use in the home impossible both conflicted with the right as construed. The Stevens dissent preserved the militia-related construction and a broader reading of Miller, and the Breyer dissent preserved interest balancing as the proposed alternative method, and each dissent recorded the precise point on which its author parted from the majority.

The Right Reaches the States, and the Arms It Covers

Two questions remained after District of Columbia v. Heller defined the right in a case arising in the District of Columbia. The first concerned the governments bound by the guarantee. The second concerned the instruments the guarantee covers. McDonald v. City of Chicago answered the first question by holding the right fully applicable to the states through the Fourteenth Amendment. Caetano v. Massachusetts addressed the second question by rejecting state court reasoning that would have confined protection to instruments known at the founding or suited to military use. Each decision applied the core holding of Heller to a setting Heller had not resolved, a challenge to state and local handgun restrictions in one case and a conviction for possession of a stun gun in the other.

How did the Second Amendment come to bind the states?

The Supreme Court held in McDonald v. City of Chicago that the Second Amendment right identified in District of Columbia v. Heller applies fully to the states through the Fourteenth Amendment, because self-defense is a fundamental right deeply rooted in the nation’s history and tradition and implicit in ordered liberty.

The path to that holding began with the original understanding of the Bill of Rights as a restraint on the federal government alone. Barron v. Baltimore had stated that position, and the nineteenth century decisions in United States v. Cruikshank and Presser v. Illinois had each held that the Second Amendment restrained only the federal government and left the states free to regulate. Those decisions predated the incorporation analysis that McDonald eventually undertook. By the time the Chicago and Oak Park challenges reached the Court, the governing question had therefore changed. The question was whether the right recognized in Heller ranked among the fundamental rights that the Fourteenth Amendment makes applicable against state and local governments. The petitioners pressed challenges to handgun restrictions maintained by Chicago and Oak Park, and the disposition of those challenges depended entirely on the answer to the incorporation question.

Justice Alito announced the judgment in an opinion joined in full by Chief Justice Roberts and Justices Scalia and Kennedy. The holding rested on the character of the underlying right. Heller had identified self-defense as the core lawful purpose protected by the amendment, and McDonald treated that purpose as decisive for incorporation. Self-defense, the opinion held, is a fundamental right, deeply rooted in the nation’s history and tradition and implicit in the concept of ordered liberty. Because the right satisfied that standard, the Second Amendment right recognized in Heller is fully applicable to the states through the Fourteenth Amendment. The Court did not describe a diminished version of the right operating against state governments, and the opinion did not recognize a separate, lesser guarantee for state regulation. The right that bound the District of Columbia in Heller was the right that bound the states after McDonald, stated in the same terms and grounded in the same account of self-defense at its center.

The route to incorporation mattered as much as the destination, and on the route the majority coalition divided. Justice Alito’s opinion applied the Due Process Clause of the Fourteenth Amendment under the selective incorporation doctrine, the framework through which the Court has asked, provision by provision, whether a guarantee in the Bill of Rights is fundamental to the American scheme of ordered liberty. That framework supplied both the test and the vocabulary of the opinion. The inquiry asked whether self-defense met the standard of a right deeply rooted in history and tradition and implicit in ordered liberty, and the answer followed from the account of self-defense that Heller had constructed. The Due Process route also kept the decision within an established line of incorporation precedent rather than reopening the foundation on which that line rests. For the four justices who joined the opinion in full, the established framework was sufficient to decide the case, and the opinion proceeded on that basis alone.

The same opinion expressly declined to revisit a much older precedent about the other clause of the Fourteenth Amendment. The Slaughter-House Cases had read the Privileges or Immunities Clause narrowly, and that narrow reading is the reason incorporation later proceeded through the Due Process Clause rather than through the clause addressed to the privileges or immunities of citizens of the United States. Justice Alito’s opinion left that reading in place. The opinion did not disturb the Slaughter-House construction, did not rest incorporation on the Privileges or Immunities Clause, and did not treat the Chicago and Oak Park cases as the occasion for reconsidering the distribution of work between the two clauses. The refusal was express rather than silent, and it defined the limits of the plurality position. Four justices were prepared to incorporate the right, and to do so through due process, but that group did not undertake the revision of Fourteenth Amendment doctrine that a privileges or immunities holding would have required.

Justice Thomas supplied the fifth vote for the judgment through a separate opinion concurring in part and concurring in the judgment. His route diverged from the plurality at the foundational step. In his view, the right to keep and bear arms is a privilege of United States citizenship, and incorporation rests on the Privileges or Immunities Clause of the Fourteenth Amendment. Justice Thomas argued that the Slaughter-House line rests on a misreading of the Fourteenth Amendment, and his concurrence undertook the reconsideration that the plurality expressly avoided. The disagreement between the two opinions was therefore not about the outcome for the Chicago and Oak Park restrictions, and it was not about whether the right applies against the states. The disagreement concerned which clause of the Fourteenth Amendment performs the work of incorporation and whether a precedent from 1873 should continue to govern that choice. Justice Thomas joined parts of the plurality opinion and concurred in its judgment, but the reasoning that carried his vote rested on a clause the plurality had declined to use.

The structure of the five votes has a precise consequence. Justice Thomas supplied the fifth vote for incorporation, and without that vote there was no majority for applying the right to the states. At the same time, no single rationale commanded five votes on the clause question. Four justices rested incorporation on the Due Process Clause, and one justice rested incorporation on the Privileges or Immunities Clause. The judgment of incorporation therefore commanded a majority, while the choice between the two clauses did not. A statement that the Court incorporated the right through the Due Process Clause, without qualification, attributes to five justices a rationale that only four endorsed. A statement that the Court revived the Privileges or Immunities Clause makes the opposite error, crediting the judgment with a reasoning that a single justice supplied. The accurate statement holds both halves together. The right applies fully to the states, five justices agreed on that result, and the rationale in any individual opinion belongs to that opinion and to the justices who joined it.

On disposition, the Court remanded the challenges to the Chicago and Oak Park handgun restrictions following the holding. The incorporation ruling resolved the threshold question that had controlled the cases, namely whether the Second Amendment constrains state and local governments at all. With that question answered in the affirmative, the challenges returned to the lower court for further proceedings consistent with the holding. The remand posture is characteristic of an incorporation decision. The Court settled the applicability of the guarantee, and the application of the guarantee to the particular restrictions followed in the proceedings on remand rather than in a final judgment from the Supreme Court striking each restriction by its terms. McDonald thus sits in the line of decisions that determine which governments a provision of the Bill of Rights binds, and its holding operates at that level. Later disputes about particular state and local regulations began from the premise McDonald established, that the amendment applies to the states with the same force it carries against the federal government.

Two dissents resisted the incorporation holding, and each stated its objection at the level of the threshold question. Justice Stevens filed a dissent arguing that the right should not be incorporated. Justice Breyer filed a dissent joined by Justices Ginsburg and Sotomayor, and that dissent likewise argued against incorporation. The position common to the dissents was that the Fourteenth Amendment should not be read to impose the Heller right on state and local governments, and that legislatures should retain the regulatory discretion that incorporation displaced. The five to four division therefore tracked a disagreement about the structure of the federal system as much as a disagreement about firearms. The majority treated a fundamental right as binding on every level of government once the standard of deep rootedness and ordered liberty was met. The dissents treated the same standard as unmet, or as an insufficient basis for withdrawing the subject from state legislative judgment, and would have preserved the regulatory discretion of the states.

Caetano v. Massachusetts presented the complementary question of scope, and the setting was a criminal conviction rather than a challenge to a handgun ban. Jaime Caetano had been convicted under a Massachusetts law prohibiting possession of a stun gun. The Supreme Judicial Court of Massachusetts upheld the prohibition, and its judgment rested on three grounds, each of which located stun guns outside the protection of the Second Amendment. Because the per curiam opinion of the Supreme Court answered the three grounds in sequence, the state court reasoning defines the structure of the federal decision. Each ground offered an independent basis for excluding the stun gun from the category of protected arms, and the per curiam held that each ground contradicted Heller. The case therefore reads as a test of how far the reasoning of Heller extends beyond the handgun in the home, the specific arm and setting that Heller had addressed.

The first ground held that stun guns were not in common use at the time of the enactment of the Second Amendment, and the conclusion treated the inventory of arms known in the late eighteenth century as the boundary of constitutional protection. The second ground held that stun guns are unusual because the stun gun is a modern invention, and the reasoning equated novelty with the unusual character that Heller had associated with weapons outside the protected category. The third ground rested on military utility, and it observed that nothing suggested a stun gun could be readily adapted to military use, implying that an arm without a demonstrated military application fell outside the guarantee. Taken together, the three grounds would have produced a restrictive account of the protected category. An arm designed after the founding, unknown to the founding generation, and not shown to be adaptable to warfare would receive no protection under any of the three tests, and each test reinforced the others in the state court judgment under review.

The per curiam rejected the first ground in language drawn directly from Heller. The Second Amendment, the opinion stated, “extends, prima facie, to all instruments that constitute bearable arms, even those that were not in existence at the time of the founding.” The formulation matters for both its reach and its qualifier. Its reach covers all instruments that constitute bearable arms as the starting point of the analysis, and it expressly includes instruments that did not exist when the amendment was adopted. Its qualifier, prima facie, marks that starting point as the presumptive coverage of the text rather than a final judgment on any particular regulation. On that reasoning, the absence of stun guns from the founding era could not decide the question against protection, because Heller had already rejected a founding era inventory as the measure of the right. A state court rule that denied coverage to an arm solely because the arm postdated ratification contradicted the precedent the state court was obliged to apply.

The per curiam rejected the second and third grounds on corresponding reasoning from the same precedent. Modernity does not make a weapon unusual, and the fact that the stun gun is a modern invention therefore could not supply the unusual character the state court had attributed to it. Novelty alone does not place an arm in the category of dangerous and unusual weapons, as Heller used that category. The third ground failed for a separate reason. Heller had rejected the proposition that only weapons useful in warfare are protected, and a test that asked whether a stun gun could be readily adapted to military use therefore applied a criterion the governing precedent had discarded. Protection under Heller does not turn on a showing that an arm serves a military function, and the per curiam treated the state court reliance on military adaptability as incompatible with that holding.

The disposition requires the same precision as the reasoning. In a per curiam decision issued on March 21, 2016, the Court vacated the judgment of the Massachusetts Supreme Judicial Court and remanded the case. The Court vacated and rejected the state court reasoning, holding that each of the three grounds contradicted Heller. The Court did not itself enter a final judgment striking the Massachusetts statute by name. That distinction is not a formality. A vacatur removes the judgment under review and returns the case for further proceedings without the reasoning that had sustained the conviction, while a final judgment against the statute would have resolved the validity of the prohibition in the Supreme Court itself. Accounts of Caetano that describe the Court as having struck down the Massachusetts stun gun ban overstate the disposition the opinion entered. Accounts that describe the decision as a rejection of the three grounds for upholding the ban, in a judgment vacated and remanded, state the posture exactly as the Court left it.

Justice Alito, joined by Justice Thomas, concurred in the judgment with a fuller opinion. The concurrence described the per curiam as resolving the three errors in the state court judgment, and Justice Alito criticized the treatment of Heller by the Massachusetts Supreme Judicial Court. The concurrence agreed with the disposition the per curiam entered, and its additional reasoning elaborated the basis for that agreement at greater length than the per curiam format allowed.

One further feature of the record belongs in any complete account of the decision. The case was briefed and argued before the death of Justice Scalia, the author of the majority opinion in Heller, and Justice Scalia took no part in the decision. The per curiam therefore applied Heller without the participation of the justice who had written it, and the reasoning of the decision rests entirely on the text of Heller as precedent rather than on any elaboration by its author in the later case. That posture reinforced the method of the per curiam, which proceeded ground by ground through the state court reasoning and measured each ground against propositions stated in Heller itself. The quoted formulation about bearable arms, the treatment of unusual weapons, and the rejection of a warfare utility test each came from the earlier opinion, and the per curiam presented its task as the correction of a lower court departure from holdings already made.

Read together, the two decisions fixed two dimensions of the Heller right. McDonald held that the right binds the states as fully as it binds the federal government, while preserving, in the division between the plurality and the Thomas concurrence, an unresolved choice between the Due Process Clause and the Privileges or Immunities Clause as the textual home of incorporation. Caetano held that the category of bearable arms extends prima facie beyond the instruments of the founding era, that novelty does not make an arm unusual, and that military adaptability is not the test of protection, while leaving the Massachusetts prohibition to the proceedings that followed a vacated judgment rather than a final ruling against the statute by name. Each decision was exact about the proposition it established and exact about the proposition it withheld.

The Two-Step Era in the Courts of Appeals

After District of Columbia v. Heller in 2008 and McDonald v. City of Chicago in 2010, the courts of appeals faced a large body of litigation under a right that the Supreme Court had defined in part and left in part for later elaboration. Heller held that the Second Amendment protects an individual right to possess a firearm unconnected with service in a militia, and to use that arm for traditionally lawful purposes, such as self-defense within the home. McDonald held that the right recognized in Heller is fully applicable to the states through the Fourteenth Amendment, because self-defense is a fundamental right deeply rooted in the history and tradition of the nation and implicit in the concept of ordered liberty. Neither decision supplied a complete test for the next case. Heller struck down a handgun ban and a requirement that firearms in the home be kept unloaded and disassembled or bound by a trigger lock, and Heller identified categories of regulation that its holding did not cast into doubt. Between those fixed points lay a wide field of licensing laws, categorical prohibitions, and restrictions on particular weapons and magazines, each presented to a court of appeals in a concrete dispute and each requiring a method that a panel could state, apply, and defend in an opinion.

The method that emerged across the circuits between 2008 and 2022 was a two-step framework, and its order mattered as much as its content. A court asked the two questions in sequence, and the answer to the first question decided whether the second question arose at all. The sequence gave the framework its structure and its name. It also divided the labor of a Second Amendment case into two distinct kinds of inquiry, one directed toward history and the scope of the guarantee, and the other directed toward the justification a government offered for a particular regulation and the fit between that justification and the means the regulation employed. Because the Supreme Court had decided Heller and McDonald without prescribing that sequence in terms, the courts of appeals built the framework from the materials those opinions contained, above all from the historical reasoning through which Heller had construed the amendment and from the qualifications that Heller had placed around its holding. The framework therefore carried a claim of descent from the beginning. Defenders and critics alike traced the two steps to Heller, and disagreement over the framework turned, from the earliest cases onward, into disagreement over the fidelity of that descent.

The first step asked whether the challenged law burdens conduct within the scope of the Second Amendment as historically understood. The question directed attention away from the policy grounds for the law and toward the coverage of the guarantee. A court examined the conduct the law restricted, the persons the law restricted, and the arms the law restricted, and it measured each element against the scope of the right as history had defined it. If the law burdened conduct outside that scope, the inquiry ended and the regulation stood without any examination of the governmental interest behind it. If the law burdened conduct within that scope, the case moved forward. The design drew directly on the reasoning of Heller, which had read the operative clause as conferring an individual right, had treated the prefatory clause as announcing a purpose without limiting or expanding the operative clause, and had tied the protection of arms to the arms in common use at the time, against a historical tradition of prohibiting the carrying of dangerous and unusual weapons. Step one converted that reasoning into a threshold test for cases that Heller itself had not decided.

The second step applied means-end scrutiny. Once a court had found that a law burdened conduct within the historically understood scope of the amendment, the court asked whether the government had justified the burden through a sufficient objective pursued by sufficiently fitted means. The vocabulary of the step came from the tiers of scrutiny familiar elsewhere in constitutional law, with strict scrutiny at the demanding end and intermediate scrutiny below it. Strict scrutiny, in its familiar form, asks for a compelling governmental objective and for means narrowly drawn to that objective, and under the two-step framework strict scrutiny was rarely applied. Intermediate scrutiny, the form the second step took in most circuits, required an important governmental objective and a reasonable fit between the objective and the challenged law. The fit requirement did not demand the least restrictive means available to the government, and it did not demand a perfect correspondence between the problem a legislature had identified and the coverage of the law the legislature had enacted. It demanded a reasonable fit, a standard that left room for legislative choice among approaches to an acknowledged objective.

The predominance of intermediate scrutiny followed from the way the framework sorted burdens. Courts applying the framework treated the core protection identified in Heller, self-defense in the home, as the center of the guarantee, and treated many of the regulations under challenge as burdens that fell outside that center or that fell upon it indirectly. Where a burden appeared less than severe, or where the conduct regulated stood at a distance from the home defense that Heller had placed at the core, intermediate scrutiny presented itself as the proportionate instrument. The qualification language of Heller reinforced the choice. Heller had stated that the right secured by the Second Amendment is not unlimited, had declined to cast doubt on longstanding prohibitions on possession of firearms by felons and by persons with mental illness, on laws forbidding the carrying of firearms in sensitive places such as schools and government buildings, and on laws imposing conditions and qualifications on the commercial sale of arms, and had warned that the identified measures were examples only and that the list did not purport to be exhaustive. A framework built under that language had reason, in the view of the courts that built it, to reserve the most demanding tier for the most demanding case and to test the ordinary run of regulation under a standard built around importance and fit.

The pattern was the framework’s record, and the record is best described as a record of the framework’s operation. Under the two-step framework, the courts of appeals upheld the large majority of challenged regulations during the period from 2008 to 2022. The regulations sustained under the framework included many licensing regimes, under which a government conditioned the possession or carrying of firearms on a license or permit issued under stated criteria. The regulations sustained also included categorical prohibitions, under which a government barred defined categories of persons from possessing firearms or barred defined categories of arms altogether. The regulations sustained also included restrictions on particular weapons and on magazines, under which a government limited the arms or the ammunition feeding devices that law-abiding persons could acquire or possess. Each category reached the courts through the same two questions, and each category ordinarily survived the second question after a court had identified an important governmental objective and found a reasonable fit between that objective and the restriction under review. The consistency of the outcome across categories, circuits, and subject matter is the central fact of the era, and the framework’s design accounts for that consistency without recourse to any account of judicial motive.

Licensing illustrates the operation of the design. A licensing regime rarely prohibited outright the conduct at the center of Heller, and at the second step the orderly administration of possession and carrying through advance screening lent itself to statement as an important governmental objective, while each condition attached to a license lent itself to defense as a reasonably fitted means of that screening. A categorical prohibition presented a harder first step, where the qualifications recorded in Heller, including the description of longstanding prohibitions as presumptively lawful, supplied material for the historical inquiry, and an equally structured second step, where keeping firearms from persons identified as presenting heightened risk, or keeping particular arms out of circulation, could be stated in the vocabulary the test rewarded. Restrictions on particular weapons and magazines followed the same path, with step one directed to common use and to the tradition concerning dangerous and unusual weapons, and step two directed to fit.

The defense of the framework, stated by its reasoning, began from the proposition that step two performed the ordinary work of constitutional adjudication. On that view, a right and the regulation of the activity the right protects coexist across constitutional law, and other rights doctrines accommodate regulation through structured tests that weigh the governmental justification against the burden a law imposes. The two-step framework treated the Second Amendment as a right of the same constitutional order as the rights governed by those doctrines, rather than as an exception to the methods courts used elsewhere. Supporters of the framework, speaking through that reasoning, pointed to the structure of Heller itself. Heller had recognized an individual right and had surrounded the recognition with qualifications in the same opinion, had preserved categories of presumptively lawful regulation, and had stated that the right was not a right to keep and carry any weapon whatsoever in any manner whatsoever and for whatever purpose. A doctrine that took the qualifications seriously, the defense ran, required a place in the analysis where justification could be heard, and step two supplied that place in an orderly and transparent form, after history had fixed the scope of the guarantee at step one.

The criticism of the framework, stated by its reasoning, denied precisely that account of what Heller had left unfinished. The critics, led on the Supreme Court by Justice Thomas in dissents from denials of certiorari, argued that means-end scrutiny let courts balance away the right, because a test that asks whether a governmental objective is important and whether a law fits that objective reasonably invites a court to sustain a regulation whenever the justification sounds weighty and the fit sounds plausible. On that view, the second step displaced the first. History fixed the scope of the guarantee at step one, and balancing then decided the case at step two on grounds that had nothing to do with history, so that the historical inquiry became a preliminary formality and the outcome turned on a judicial assessment of legislative policy. The criticism drew support, in the reasoning of its holders, from the record of the era itself. A framework under which the large majority of challenged regulations survived, across licensing, categorical prohibitions, and restrictions on weapons and magazines, suggested to the critics that the second step operated in practice as a ratification device, not because any judge acted from an improper purpose, but because the standard asked so little of the government that a competent defense of a regulation could satisfy it in case after case. The objection was to the test, and the test’s defenders and critics contested the same record on opposite readings of its meaning.

The most persistent judicial statement of the criticism came at the certiorari stage, in dissents from denials of certiorari. Justice Thomas repeatedly dissented from the refusal of the Supreme Court to grant review in Second Amendment cases arising under the two-step framework, and Justice Gorsuch joined that position at times. A dissent from a denial of certiorari decides nothing and binds no court, and the holders of the position wrote in that posture with full awareness of its limits. The reasoning, repeated across those dissents, held that the lower courts had treated the right recognized in Heller as a disfavored right, subject to a balancing that the Supreme Court applied to no comparable guarantee, and that the two-step framework, and in particular the intermediate scrutiny that dominated its second step, had produced the disfavored treatment as a matter of doctrinal design. The dissents argued that Heller had already performed the relevant historical analysis, had construed the text of the amendment against the history of the right, and had reached judgment through that analysis rather than through any weighing of governmental interests against the burden on the individual. A method that added a balancing stage after the historical stage therefore did not complete Heller, on the reasoning of Justice Thomas and of Justice Gorsuch when Justice Gorsuch joined, but contradicted the method by which Heller had decided the case before it.

Reduced to that question, the disagreement of the era has a precise shape. One position held that Heller decided a case and recognized a right, identified the core of the right and the categories of regulation that stood outside doubt, and left the construction of a general test to the ordinary process of lower court adjudication, in which means-end scrutiny held an established place across rights doctrines. The opposing position held that Heller decided a case by a method, that the method was the historical construction of the amendment’s text and scope, and that the method excluded a subsequent stage at which a court weighed the importance of a governmental objective against the burden a regulation imposed on conduct the historical inquiry had already found protected. The first position treated step two as the accommodation of a right to regulation, without which the qualifications in Heller would lack an instrument of enforcement. The second position treated step two as the surrender of the right to the regulation under review, because a reasonable fit to an important objective could be found for nearly any measure a legislature enacted. Between those positions lay the record of the courts of appeals from 2008 to 2022, a record in which strict scrutiny was rarely applied, intermediate scrutiny governed in most circuits, and the large majority of challenged regulations, from licensing regimes to categorical prohibitions to restrictions on particular weapons and magazines, were upheld.

When the Supreme Court returned to the method in New York State Rifle and Pistol Association v. Bruen in 2022, the vocabulary the Court used for the era captured both halves of the framework in a single description. The Court described the approach the courts of appeals had followed as a framework that combined history with means-end scrutiny. History named the first step, the inquiry into the scope of the amendment as historically understood, which the Court in Bruen treated as broadly consistent with Heller. Means-end scrutiny named the second step, the inquiry into important objectives and reasonable fit, which the Court held that Heller and McDonald do not support in the Second Amendment context. The description settled the terms on which the era is understood. The two-step framework had joined a historical threshold to a balancing test, the courts of appeals had applied that combination to sustain the large majority of the regulations challenged under it, and the dispute that ran through the period, between the defenders of step two as ordinary accommodation and the critics led in dissent from denials of certiorari by Justice Thomas, joined at times by Justice Gorsuch, was at bottom a dispute over a question that only the Supreme Court could answer definitively, whether Heller had decided the method as well as the right.

Bruen: History in Place of Balancing

The Supreme Court decided New York State Rifle and Pistol Association v. Bruen, 597 U.S. 1, on June 23, 2022, by a vote of six to three. Justice Thomas wrote the majority opinion, joined by Chief Justice Roberts and Justices Alito, Gorsuch, Kavanaugh, and Barrett. The case concerned the conditions under which a state could license the carrying of a concealed handgun in public, and the decision reached far beyond the particular licensing standard under review. The majority rejected the means-end framework that the courts of appeals had applied to Second Amendment challenges for more than a decade and replaced that framework with a test that turned on text and historical tradition. Under the replacement test, a court asked first whether the plain text of the Second Amendment covered the conduct at issue, and a court asked next whether the government had demonstrated that its regulation was consistent with the historical tradition of firearm regulation in the United States.

The challenged regime was New York’s proper-cause requirement. New York law, in varying statutory form for more than a century, required an applicant for a license to carry a concealed handgun in public to demonstrate proper cause for the license. The decisive feature of the regime lay in its administration. A general desire for self-defense was insufficient to satisfy the standard. An applicant had to show a special need for self-protection, and that need had to be distinguishable from the need of the general community. The requirement therefore sorted applicants by the character of their reasons rather than by objective qualifications alone. The petitioners were members of the association named in the case caption, and the petitioners had been denied unrestricted licenses under that administration of the standard.

The holding answered the licensing question in constitutional terms. The majority held that the Second and Fourteenth Amendments protect an individual’s right to carry a handgun for self-defense outside the home. The proper-cause requirement violated that right because the requirement prevented law-abiding citizens with ordinary self-defense needs from exercising it. If the protected interest included armed self-defense outside the home for ordinary citizens, a standard that reserved public carry to applicants who could demonstrate a need distinct from the ordinary need of the community denied the right to the very class of persons the majority described as its holders. The defect was that the standard conditioned the exercise of the right on a showing that most law-abiding citizens, by definition, could not make.

Does Bruen permit states to require a carry license?

Yes, within limits stated in the opinion. New York State Rifle and Pistol Association v. Bruen invalidated discretionary proper-cause standards, not licensing itself. Footnote 9 described objective shall-issue regimes in 43 states as permissible, subject to challenges against lengthy wait times or exorbitant fees that deny ordinary citizens public carry.

That answer requires precision, because the distinction between a licensing system and a discretionary standard inside a licensing system carried much of the opinion’s practical weight. The majority invalidated the discretionary special-need standard that New York officials applied when the officials appraised an applicant’s reasons for seeking a license. The majority did not hold licensing as such invalid, and a reading of the decision that treated every carry license requirement as unconstitutional after June 23, 2022 would misstate the holding. Footnote 9, addressed in detail in the passages that follow, described the shall-issue regimes used across 43 states in terms that treated those regimes as consistent with the right, while attaching a caveat about abusive administration. The Kavanaugh concurrence, joined by the Chief Justice, reinforced the same boundary by describing objective requirements that a shall-issue regime could use.

The road to the replacement test ran through the framework the courts of appeals had built after District of Columbia v. Heller and McDonald v. City of Chicago. The courts of appeals had coalesced around a two-step framework. At the first step, a court asked whether the challenged law burdened conduct within the scope of the Second Amendment as historically understood. At the second step, if the law did burden protected conduct, a court applied means-end scrutiny, in most circuits intermediate scrutiny that required an important governmental objective and a reasonable fit between the law and that objective. Strict scrutiny was rarely applied. Under that framework, the courts of appeals upheld the large majority of challenged regulations during the period from 2008 to 2022, including many licensing regimes, categorical prohibitions, and restrictions on particular weapons and magazines. Defenders of the framework treated the second step as the ordinary way constitutional rights accommodate regulation, analogizing to doctrines governing other rights. Critics of the framework, including several justices in dissents from denials of certiorari, with Justice Thomas writing repeatedly and Justice Gorsuch joining at times, argued that means-end scrutiny let courts balance away the right and that Heller had already performed the relevant historical analysis.

Bruen discarded the second step. The majority declined to adopt the two-step approach and stated the objection in a sentence that the opinion itself supplied: despite the popularity of the two-step approach, the approach was one step too many. The majority accepted that the first step of the old framework was broadly consistent with Heller, because the first step asked a historical and textual question about the scope of the right. The majority held, however, that Heller and McDonald do not support means-end scrutiny in the Second Amendment context. Means-end scrutiny had supplied the mechanism by which the courts of appeals weighed governmental objectives, and the removal of that mechanism changed the kind of justification a government had to offer for a firearms regulation. After Bruen, a government could not sustain a regulation by demonstrating that the regulation served an important objective with a reasonable fit, however strong the record supporting the objective might be. The government had instead to locate the regulation within a historical tradition, and the court had to evaluate the regulation by analogical comparison with historical regulations rather than by balancing.

The replacement test began with the text. When the plain text of the Second Amendment covers an individual’s conduct, the Constitution presumptively protects that conduct. The presumption placed the burden of justification on the government from the outset of the historical inquiry. The government then had to justify its regulation by demonstrating that the regulation is consistent with the nation’s historical tradition of firearm regulation. The inquiry was about consistency with a tradition rather than identity with a single historical law. The government bore the burden of demonstration, so a silent or thin historical record did not operate in the government’s favor. And the presumption attached at the textual step, before any historical comparison began, so the sequence of the analysis assigned the government the task of displacing a protection that the text had already established on the facts of coverage.

The analogical method gave that burden its concrete form. The government had to identify a well-established and representative historical analogue, not a historical twin. The distinction between an analogue and a twin defined the space in which the test operated. A twin requirement would have demanded a historical regulation that matched the challenged regulation in detail, and the majority disclaimed any such demand. An analogue, by contrast, was a historical regulation similar enough in the respects the opinion specified to support an inference about the tradition. The qualifiers attached to the analogue requirement carried equal weight. The analogue had to be well established, which excluded isolated or short-lived practices from bearing the argument alone. The analogue had to be representative, which excluded practices confined to a small corner of the historical record from standing in for the national tradition.

Relevant similarity supplied the standard by which a court judged an offered analogue. Analogical reasoning under Bruen asked whether historical and challenged regulations were relevantly similar under two metrics drawn from Heller and McDonald. The first metric was how the regulations burden a law-abiding citizen’s right to armed self-defense. The second metric was why the regulations impose that burden. The majority described comparably justified and comparable burden as the central considerations in the analysis. A court could not rest on a surface resemblance between two regulations, such as a shared subject matter, without asking whether the historical regulation burdened the right in a comparable way and for a comparable reason. Equally, a court could not dismiss an analogue on a superficial difference without asking whether the difference touched either metric in a manner that mattered to the tradition.

Applied to public carry, the historical record the majority weighed pointed against the proper-cause standard. The majority found no tradition of broadly prohibiting the public carry of commonly used firearms for self-defense. That finding framed every narrower comparison that followed, because the challenged standard operated as a broad barrier to public carry by ordinary citizens rather than as a regulation of a particular manner or place of carry. The proper-cause regime had placed the burden on the applicant to demonstrate an exceptional need, while the test placed the burden on the government to demonstrate a tradition supporting the regime. Once the majority found the broad tradition missing, the government had to build its justification from narrower categories of historical law, and the majority examined each category against the how and why metrics rather than aggregating the categories into a general claim about historical regulatory authority.

The narrower categories did not carry the burden the test assigned. Surety statutes and affray laws, in the majority’s account, addressed particular threatening conduct rather than imposing a special-need licensing discretion. Surety laws operated against identified persons whose conduct gave rise to a specific concern, and affray laws punished conduct that terrorized others, so each body of law responded to what a particular person had done or threatened to do. The proper-cause standard operated differently on both metrics. On the how metric, the standard burdened law-abiding citizens generally, at the point of application and before any threatening conduct had occurred. On the why metric, the standard rested on an official appraisal of need rather than on a response to identified threatening behavior. The majority treated that mismatch as decisive for the analogy. Historical laws that singled out threatening conduct supported regulations aimed at threatening conduct, and those laws did not support a regime that required every applicant to prove a special need as a condition of exercising the right at all.

The later historical record received the same treatment. Nineteenth-century concealed-carry prohibitions, in the majority’s account, coexisted with open carry, so a jurisdiction that forbade concealed carry left a lawful channel for public carry in the open. That coexistence changed the how comparison, because a prohibition on one manner of carry that preserved another manner imposed a burden different in kind from a licensing standard that could deny public carry altogether to an applicant with only ordinary self-defense needs. The majority also addressed the jurisdictions whose practice departed from the general pattern. The opinion treated a small number of outlier jurisdictions as insufficient to establish a tradition. A practice had to be representative of the national tradition before the practice could justify a regulation under the test, and a handful of jurisdictions, weighed against the broader record the majority described, could not supply representativeness on its own.

Footnote 9 recorded the licensing qualification at a precision that later readers ignore at the cost of accuracy. The footnote stated that nothing in the analysis should be interpreted to suggest the unconstitutionality of the shall-issue licensing regimes of 43 states, under which a general desire for self-defense is sufficient to obtain a permit. The contrast with New York’s regime was exact. The same desire that failed the proper-cause standard satisfied the threshold in a shall-issue regime, because a shall-issue regime did not ask an official to rank the applicant’s need against the need of the general community. The footnote stated that such regimes do not necessarily prevent law-abiding, responsible citizens from exercising the Second Amendment right. The footnote also described features that such regimes often include, among them a requirement of a background check or a firearms safety course. Each element of the passage performed a function. The general-desire sentence identified the substantive difference between the two kinds of regime.

The footnote then drew the line between objective standards and discretion in the vocabulary the opinion used for the distinction. Shall-issue regimes, the footnote stated, appear to contain only narrow, objective, and definite standards guiding licensing officials. The footnote contrasted such standards with the appraisal of facts, the exercise of judgment, and the formation of an opinion, which the passage identified as the characteristics that typify proper-cause standards. A narrow, objective, and definite standard directed an official to verify facts that either existed or did not exist, such as the result of a background check or the completion of a course. A proper-cause standard directed an official to appraise the facts of an applicant’s situation, exercise judgment about the sufficiency of a need, and form an opinion about whether that need qualified as special. The majority’s objection attached to the second kind of direction. The passage also carried a caveat that limited the comfort the footnote offered to shall-issue jurisdictions. Because any permitting scheme can be put toward abusive ends, the Court did not rule out constitutional challenges to shall-issue regimes where, for example, lengthy wait times in processing license applications or exorbitant fees deny ordinary citizens the right to public carry.

Precision about attribution matters at exactly this point in the decision, because two different passages addressed shall-issue regimes and the passages did not say identical things. Footnote 9 contained the background check and firearms safety course examples, the narrow, objective, and definite standards language, and the caveat about lengthy wait times and exorbitant fees. The discussion of fingerprinting and mental-health records checks appeared in a different place. Justice Kavanaugh’s concurrence, joined by Chief Justice Roberts, supplied that discussion. The concurrence emphasized that the decision did not disturb the statements in Heller and McDonald about presumptively lawful measures, and the concurrence quoted the shall-issue footnote approvingly. The concurrence then stated that shall-issue regimes may use objective requirements such as background checks, mental-health records checks, fingerprinting, and training in firearms handling and in laws regarding the use of force. The list in the concurrence described the objective requirements that states use, and the concurrence’s approval of the footnote connected that list to the boundary the majority had drawn.

Justice Alito’s concurrence stressed a different boundary. The Alito concurrence emphasized the narrowness of what the Court had decided, and the concurrence stated that the ruling did not rest on empirical assessments of the effects of the laws under review. Under a means-end framework, empirical assessments of a law’s effects occupied the center of the second step, and litigants built records about those effects for courts to weigh. Under the test the majority adopted, the justification for a regulation turned on historical consistency, so an empirical record about effects could not supply the demonstration the test required. The concurrence’s narrowness point complemented that observation. A decision that invalidated a discretionary special-need standard on historical grounds decided the validity of that standard and the method for evaluating others, and the concurrence cautioned against reading the decision as a broader empirical verdict on firearms legislation as a class.

Justice Barrett’s concurrence addressed the historical inquiry itself rather than the licensing boundary. The Barrett concurrence raised questions about the method by which a court conducts the inquiry the majority prescribed, including which historical period controls the analysis and the risk of treating post-enactment practice as liquidating the meaning of the text. The concurrence joined the majority’s approach while noting open methodological questions of that character. The position therefore combined agreement with the text and history test in the case at hand with an express reservation about questions the case had not required the Court to resolve, and the reservation identified the places where later adjudication would have to supply answers the Bruen majority had left open.

Justice Breyer’s dissent, joined by Justices Sotomayor and Kagan, contested the decision at the level of method and at the level of the interests the method excluded. The dissent argued that the majority’s method discounted the states’ interest in addressing gun violence, and the dissent reviewed the scale of that violence as part of the argument. The dissent contended that history was too contested to bear the weight the majority placed on the historical record. The dissent also defended the interest-balancing approach that the lower courts had applied, treating that approach as a legitimate way to accommodate the right and the regulatory interests at stake. The disagreement between the majority and the dissent was therefore a disagreement about method before the disagreement was about New York’s standard. Each side accepted that a court had to evaluate the proper-cause requirement, and the sides divided over the instrument of evaluation, with the majority prescribing historical analogy and the dissent defending an inquiry that weighed governmental interests against the burden on the right.

The majority’s answer to the dissent appeared in the portions of the opinion that constructed the replacement test, and the answer took the form of a claim about precedent rather than a competing assessment of the interests the dissent emphasized. The majority held that Heller and McDonald do not support means-end scrutiny in the Second Amendment context, and the majority described the two-step framework as one step too many rather than as a permissible elaboration of those decisions. On the majority’s reading, Heller had already performed the relevant historical analysis when the earlier Court defined the right, and a second step that reweighed interests in each case contradicted the structure of that holding. The dissent read the precedents differently and defended the balancing the courts of appeals had practiced as consistent with the accommodation of rights and regulation elsewhere in constitutional law. The majority treated the historical definition of the right as the decision that precedent had made, leaving later courts to apply that definition by analogy. The dissent treated the accommodation of the right to regulatory interests as a question that precedent had left to case-by-case judgment.

The sequence of the test also determined what counted as a sufficient answer from the government at each stage. A government that failed at the textual stage had no regulation to justify, because coverage by the plain text triggered the presumption before any historical evidence entered the analysis. A government that reached the historical stage had to produce the analogue and defend the comparison under the how and why metrics, and a comparison that failed either metric failed the demonstration the opinion required. The allocation left no stage at which a court weighed the importance of the governmental objective against the burden, because the majority had removed that weighing from the framework altogether.

The decision left several elements of the earlier doctrine in place, and the majority identified those elements expressly. Bruen left undisturbed the core holding of Heller on possession of a handgun in the home for self-defense. The decision left in place the categories of presumptively lawful measures that Heller had described and that the Kavanaugh concurrence emphasized, including the longstanding prohibitions and conditions that Heller had listed as examples rather than as an exhaustive catalogue. The decision left objective shall-issue licensing in place on the terms footnote 9 stated, with the footnote’s caveat about abusive administration preserved alongside the approval. The opinion changed the standard by which firearms regulations would be judged, replacing balancing with historical analogy, and the opinion applied that standard to invalidate a discretionary special-need requirement. The opinion did not invalidate licensing generally, did not disturb the home possession holding at the core of Heller, and did not withdraw the presumptively lawful categories that the earlier decisions had recorded.

Rahimi and the Shape of the Settled Doctrine

United States v. Rahimi, 602 U.S. 680, decided on June 21, 2024, applied the historical tradition test of New York State Rifle and Pistol Association v. Bruen, 597 U.S. 1, to a federal firearms prohibition and sustained the prohibition against the constitutional challenge brought against it. The decision arrived by a vote of eight to one. Chief Justice Roberts wrote for the majority, joined by Justices Alito, Sotomayor, Kagan, Gorsuch, Kavanaugh, Barrett, and Jackson. Justice Thomas, the author of Bruen, dissented alone. Concurrences came from Justice Sotomayor, joined by Justice Kagan, from Justice Kagan, joined by Justice Sotomayor, from Justice Gorsuch, from Justice Kavanaugh, from Justice Barrett, and from Justice Jackson. The spread of authorship matters to the shape of the result. The majority spoke for eight justices on the validity of one federal provision against one form of challenge, and separate opinions then marked, from different directions, the points that the majority holding did not resolve.

The provision at issue was section 922(g)(8) of title 18 of the United States Code. That provision makes it unlawful for a person subject to a qualifying court order to possess firearms. The statute does not attach that consequence to every order a court may enter, and the majority treated the statutory conditions as part of the constitutional analysis rather than as background detail. A qualifying order is one issued after a hearing at which the person had actual notice and an opportunity to participate. The qualifying order must also restrain the person from harassing, stalking, or threatening an intimate partner or a child of an intimate partner. The restraint element thus ties the prohibition to a defined relationship and to defined forms of threatened conduct, rather than to the existence of a court order of any kind between any parties. Each element confines the class of persons the provision reaches, and the decision has to be read with those elements in place.

A qualifying order must satisfy one further condition, stated in the statute as an alternative. The order either includes a finding that the person represents a credible threat to the physical safety of the intimate partner or child, or explicitly prohibits the use, attempted use, or threatened use of physical force against the intimate partner or child. A finding of credible threat is therefore one route into coverage, and an explicit prohibition on force is the other. The prohibition on possession lasts while the order is in effect. Its duration follows the order, and expiration of the order ends the period the statute covers. Section 922(g)(8) was added by the Violent Crime Control and Law Enforcement Act of 1994. That enactment date, the hearing requirement, the relationship element, the alternative credible threat finding or explicit prohibition on force, and the duration tied to the order together state the provision that the Court assessed. A different provision, with a broader class, a longer duration, or no judicial finding, would have presented a different question.

Zackey Rahimi was subject to a Texas protective order entered after a hearing, and the order contained a finding that he posed a credible threat. He was indicted for possessing firearms while subject to the order. The challenge he mounted was facial. He argued that section 922(g)(8) is unconstitutional in all its applications. That choice of posture set the burden the challenge had to carry, because a facial challenge requires a showing that no set of circumstances exists under which the statute would be valid. The majority returned to that standard at the end of its analysis and counted departure from it among the errors in the judgment under review. The framing also limits the reach of the holding. A ruling that a statute survives a facial challenge establishes that the statute has at least one constitutionally valid application on the record and reasoning before the Court, and it leaves for other litigation the distinct questions that particular applications may present.

The case reached the Supreme Court through the United States Court of Appeals for the Fifth Circuit, and the path within that court explains the reasoning the majority corrected. Applying Bruen, the Fifth Circuit initially denied relief. On rehearing, that court held the provision unconstitutional. Its reasoning on rehearing was that the historical record did not support disarming persons under civil protective orders. The Supreme Court reversed. The majority held that section 922(g)(8) survives the facial challenge. In the formulation the opinion gave, the tradition of firearm regulation in the United States allows the government to disarm individuals who present a credible threat to the physical safety of others. An individual found by a court to pose a credible threat to the physical safety of another person may be temporarily disarmed consistent with the Second Amendment.

What must the government show to sustain a firearms regulation after Rahimi?

The government must show that the regulation fits the principles that underpin the historical tradition of firearm regulation. After Bruen, text coverage triggers a presumption of protection, and the government carries the burden of identifying a relevantly similar historical analogue, comparable in why and how it burdens the right.

The depth of that answer lies in the comparison the majority actually performed. Bruen had asked whether a challenged regulation and a historical regulation were relevantly similar under two metrics drawn from District of Columbia v. Heller and McDonald v. City of Chicago, namely how and why the regulations burden a law-abiding citizen’s right to armed self-defense. Comparable justification and comparable burden were the central considerations. Rahimi applied those metrics to a prohibition that Bruen itself had not assessed, and the majority began with the justification. The historical laws on which the opinion rested did not impose a disability on a general class defined by status alone. Each addressed identified individuals whose conduct or threatened conduct had drawn a legal response. Section 922(g)(8), on the majority reading, shared that feature because coverage depended on an order entered after a hearing, directed at a named person, concerning an intimate partner or a child of an intimate partner, and resting on a credible threat finding or an explicit prohibition on force. The similarity the majority found was therefore a similarity of regulatory reason, located in the tradition of responding to an identified threat to the physical safety of another person.

The surety laws supplied one part of that tradition. Under those laws, a person reasonably suspected of future misbehavior, including threatened violence against a spouse, could be required to post a bond. The bond was forfeited on breach of the peace. The obligation targeted identified individuals, and it carried procedural protections. The majority did not describe the surety laws as possession bans, because the laws did not operate in that manner. Their place in the analysis rested instead on what they showed about the reason for intervention and the person to whom intervention was directed. A legal system that permitted a bond to be exacted from an identified person reasonably suspected of threatened violence, with forfeiture following a breach of the peace, was a system that accepted preventive legal action against a particular individual before the threatened harm had been completed.

The laws against going armed supplied the second part of the tradition. Under those affray laws, carrying dangerous or unusual weapons in a manner that terrified the public was punishable, with forfeiture of the arms and imprisonment. Those laws addressed conduct, not mere possession in private, and the conduct they addressed had a public and terrifying character. The majority treated the affray laws, like the surety laws, as laws directed at identified threatening individuals rather than at a general class. Neither analogue prohibited firearm possession by a general class. Each addressed identified threatening individuals, and the majority treated that shared direction as the relevant similarity on the question of why the historical laws had burdened the right. The affray laws also carried consequences that entered the comparison on the question of how a regulation burdens the right. Forfeiture of the arms and imprisonment are burdens of a serious order, and the majority placed the burden imposed by section 922(g)(8) alongside them rather than measuring the federal provision against an imagined historical law with no burden at all.

On the how metric, the majority considered the burden imposed by section 922(g)(8) to be temporary and conditioned on a judicial finding, and it set that burden against the historical burdens of bonds, forfeiture, and imprisonment. Temporariness came from the duration element of the statute, because the prohibition lasts while the order is in effect. The judicial condition came from the hearing requirement, from the actual notice and opportunity to participate that the hearing entails, and from the credible threat finding or explicit prohibition on force that the order must contain. The majority reasoning therefore did not sustain the provision on the ground that any threat-based prohibition would pass. It sustained a provision whose burden had a defined end, a defined trigger in a court order, and a defined relationship between the person restrained and the partner or child the order protected. Alter any one of those features and the analogical comparison would have to be performed again on different facts.

The methodological passage in the majority opinion addressed the manner in which some courts had used Bruen, and the majority stated the correction at full precision. Some courts, the opinion said, had misunderstood the methodology of its Second Amendment cases. Those precedents were not meant to suggest a law trapped in amber. The amendment permits more than just those regulations identical to ones that could be found in 1791. Holding otherwise would be as mistaken as applying the protections of the right only to muskets and sabers. No regulation need be identical to a regulation from 1791, because the inquiry does not demand identity across more than two centuries of changed conditions. Bruen itself had said that a historical twin is not required, a point the majority supported by citation to Bruen, 597 U.S. at 30. A challenged law need not be a dead ringer for a historical predecessor either. The appropriate analysis considers whether the challenged regulation is consistent with the principles that underpin the regulatory tradition. Principle, in that sentence, does the work that identity cannot do. It asks a court to state what the historical laws, taken together, show about the reasons for regulation and the burdens accepted in pursuit of those reasons, and then to test the challenged law against that stated principle rather than against the surface details of any single historical statute.

That correction disposed of an overreading of Bruen on which the decision in the Fifth Circuit had partly rested. The majority identified two errors in that court. The first error was methodological. The Fifth Circuit read Bruen to require a historical twin rather than a historical analogue. Analogical reasoning, by contrast, searches for relevant similarity, and relevant similarity can exist between laws that differ in mechanism, in period detail, and in the precise form of burden imposed. A court that demands a twin has converted an analogy into an inventory, and the inventory approach fails whenever a legislature addresses a form of threatened harm through a procedure that has no exact counterpart from the founding era. The second error concerned the form of the challenge. The Fifth Circuit misapplied the standards governing facial challenges. Rahimi had to show that no set of circumstances exists under which section 922(g)(8) would be valid, and an analysis that proceeds as though a difficult or doubtful application defeats a statute in every application applies a different and weaker standard than the facial standard allows. Either error, on the majority account, was enough to distort the outcome. Together they produced a judgment that treated the absence of an identical historical law as decisive and treated that absence as fatal to the statute as a whole.

The concurrences then identified, each at a limited strength, the questions that the majority method leaves to judgment in later cases. Justice Kavanaugh, in concurrence, reviewed the role of history and tradition across constitutional interpretation and addressed the distinction between pre-enactment history and post-enactment history. The distinction matters because the sources a court consults, and the weight assigned to a practice that followed enactment rather than preceded it, can shape the tradition the court describes. Justice Barrett, in concurrence, addressed the level of generality at which the historical tradition is described, and warned that the chosen level of generality can determine the outcome. A tradition described at a high level of generality, as a tradition of disarming dangerous persons, supports a wider range of later laws than a tradition described at a low level of generality, as a tradition tied to one procedure or one class of threatened harm. Her concurrence therefore located a decisive methodological choice inside the analogical inquiry itself, rather than outside it. Neither concurrence dissented from the majority formulation. Each named a variable that the formulation contains without fixing.

Justice Gorsuch, in concurrence, stressed that the holding resolved a facial challenge only and left as-applied challenges open. The point follows from the posture of the case and from the standard the facial challenger had to meet. Rejection of the proposition that a statute is invalid in all its applications does not decide that every application of the statute is valid, and a person whose circumstances differ in a constitutionally material respect retains the ability to present that difference in a challenge directed at the application to that person. Justice Jackson, in concurrence, called attention to the difficulty lower courts were experiencing in applying Bruen and to the volume of disparate outcomes that difficulty produced. Her concurrence treated the disagreement among lower courts as information about the administrability of the test, and it placed that information before readers without altering the governing standard. Justice Sotomayor, joined by Justice Kagan, joined the majority in full while noting that the reading in the dissent would have required the twin that the precedents disclaim. The concurrences, read together, show a majority united on the disposition and on the rejection of the twin requirement, accompanied by separate statements that emphasize different open features of the inquiry, its sources, its level of generality, its posture, and its administration in the lower courts.

Justice Thomas dissented alone, and the dissent has to be stated precisely because its agreement is as significant as its disagreement. The dissent expressly agreed with the tradition on the why. The majority noted that the disagreement was over the how, and the dissent’s reasoning bears that description out. On the how, Justice Thomas argued that neither the surety laws nor the affray laws were sufficiently similar to section 922(g)(8). The surety laws did not disarm anyone. A bond requirement, even a bond forfeited on breach of the peace, leaves the person in possession of arms, and a law that leaves possession intact is not, on the dissent account, relevantly similar in burden to a law that prohibits possession. The affray laws required a conviction for an act of public terror. Their burden followed a criminal conviction for completed terrifying conduct, while the burden under section 922(g)(8) follows a civil protective order and a judicial finding, without the conviction the affray laws demanded. A comparison that moves from those laws to the federal provision at the level of principle therefore departed, in the dissent view, from the analogical comparison Bruen required. Principle-level comparison, on that account, loosens the discipline that the how and why metrics were meant to impose, because a principle stated broadly enough can accommodate laws whose burdens differ in kind from every burden the historical record contains.

The distance between the majority and the dissent is consequently narrower and more instructive than a simple division between sustaining and striking a statute. Both positions accepted that the historical tradition includes laws responding to individuals who threatened violence against others. Both positions used the surety laws and the affray laws as the operative analogues. The division concerned the burden those analogues imposed and the level at which similarity may be assessed. The majority treated a temporary prohibition, conditioned on a judicial finding of credible threat, as a burden comparable in principle to bonds, forfeiture, and imprisonment imposed on identified threatening individuals. The dissent treated the absence of disarmament in the surety laws, and the conviction requirement in the affray laws, as differences in burden that principle-level reasoning could not bridge. Which of those treatments governs a future case will depend on facts the Rahimi record did not present, including the duration of a prohibition, the procedure by which a finding is made, and the relation between the burden imposed and the burdens the analogues actually carried. The case therefore clarifies the method by applying it, and the clarification exposes the next set of disputes rather than eliminating dispute from the doctrine.

After Rahimi, several propositions stand on the authority of a decision of the Court rather than on inference from Bruen alone. The plain text step and the presumption it creates remain the starting point. The government carries the burden of justification once the text covers the conduct. Justification proceeds by analogy to the historical tradition, assessed on how and why a regulation burdens the right, and it does not require a historical twin, a dead ringer, or a regulation identical to one that could be found in 1791. A court may state the principle that underpins the tradition and test a challenged law against that principle. A prohibition on possession by a person subject to a qualifying protective order, entered after a hearing with actual notice and an opportunity to participate, resting on a credible threat finding or an explicit prohibition on force, and lasting while the order is in effect, survives a facial challenge. Temporary disarmament after a judicial finding of credible threat to the physical safety of another person is consistent with the amendment. The facial standard retains its full force, and a challenger must show that no set of circumstances exists under which the statute would be valid.

What the doctrine leaves open is equally specific. The level of generality at which the tradition is described has no fixed rule in the majority opinion, and Justice Barrett’s concurrence identifies that choice as one that can determine an outcome. Which other categories of prohibition, and which other classes of persons, stand on the tradition the majority described is not decided by a holding confined to section 922(g)(8) and to the protective order configuration that provision requires. As-applied litigation remains open, as Justice Gorsuch’s concurrence states, for persons and circumstances not resolved by rejection of a facial challenge. The weight to be given to pre-enactment and post-enactment history, the administration of the test in the lower courts amid disparate outcomes, and the burden comparison for laws that disarm without a judicial finding or without a defined end all remain questions the opinions name without answering. Rahimi thus narrows the doctrine in one direction, by rejecting the twin requirement and the law trapped in amber reading, and leaves its central analogical judgments, generality, comparability of burden, and application to particular persons, to be worked out case by case on records that present those questions directly.

The Doctrine Ledger

The ledger records each leading decision in chronological order, states the challenge and the holding in the terms the opinion used, and identifies the change that the decision made to the standard a later court applies. The final row records a statutory ruling included because public discussion groups that ruling with the constitutional decisions, and the distinction is stated in the row itself.

Decision	Year	What was challenged	Holding	What it established about the standard
United States v. Miller	1939	The National Firearms Act registration and tax requirements as applied to an unregistered short-barreled shotgun	The Act was sustained on the record presented: no evidence showed the weapon bore a reasonable relationship to the preservation or efficiency of a well regulated militia	Protection was assessed through a weapon’s relationship to militia efficiency, the frame the lower courts applied for seven decades
District of Columbia v. Heller	2008	The District of Columbia handgun ban and its requirement that firearms in the home be kept inoperable	Both provisions were struck down: the amendment protects an individual right to possess a firearm for traditionally lawful purposes such as self-defense in the home	The operative clause controls and the right is individual, with the presumptively lawful categories stated inside the holding itself
McDonald v. City of Chicago	2010	Chicago and Oak Park handgun restrictions	The right recognized in Heller applies fully against the states through the Fourteenth Amendment	The right binds every level of government; the plurality used the Due Process Clause and the fifth vote rested on the Privileges or Immunities Clause
Caetano v. Massachusetts	2016	A Massachusetts prohibition on possessing a stun gun	The state court’s judgment was vacated: each of its three grounds contradicted Heller	The amendment extends prima facie to all bearable arms, including arms not in existence at the founding
New York State Rifle and Pistol Association v. Bruen	2022	New York’s proper-cause requirement for a public carry license	The requirement was struck down: public carry for self-defense is protected and a special-need showing may not be demanded	Means-end scrutiny is rejected; the government must show a regulation is consistent with the nation’s historical tradition of firearm regulation
United States v. Rahimi	2024	Section 922(g)(8), barring possession by persons under qualifying protective orders, challenged on its face	The provision survived: disarming a person a court has found to pose a credible threat fits the tradition shown by the surety laws and the laws against going armed	Analogy runs at the level of principle; no historical twin or dead ringer is required
Garland v. Cargill	2024	The federal rule classifying bump stocks as machineguns under the National Firearms Act	The rule exceeded the agency’s authority (a statutory ruling, not a Second Amendment ruling)	A statutory definition, read as written, can decide a firearms case with no constitutional ruling at all

Reading the Doctrine as One Body of Law

Read as one body of law, the six constitutional decisions state a right, the governments bound by that right, a category of covered arms, and a method for judging regulation. United States v. Miller assessed protection through a weapon and a militia relationship on an empty record. District of Columbia v. Heller held that the operative clause protects an individual right centered on self-defense in the home. McDonald v. City of Chicago held that the right binds the states. Caetano v. Massachusetts held that coverage extends prima facie to all bearable arms. New York State Rifle and Pistol Association v. Bruen replaced balancing with historical analogy. United States v. Rahimi sustained a federal prohibition through principle level analogy.

The method change carries the central consequence across eras. A regulation judged between 2008 and 2022 faced a historical scope inquiry followed, in most circuits, by intermediate scrutiny requiring an important objective and a reasonable fit. A regulation judged under New York State Rifle and Pistol Association v. Bruen faces a textual coverage question followed by a government demonstration of consistency with a historical tradition, assessed through how and why a regulation burdened the right. The statutory language could remain identical across those periods while the reasoning changed completely, because each framework asked a different question and admitted a different justification.

The statutes behind those questions include the federal firearms law gathered in the complete account of the Gun Control Act and its prohibitions, the home statute of section 922(g)(8) among them. United States v. Rahimi sustained section 922(g)(8) only in the configuration the statute states: a hearing with actual notice and an opportunity to participate, a qualifying order concerning an intimate partner or a child of an intimate partner, a credible threat finding or an explicit prohibition on force, and a duration tied to the order. A prohibition with a different trigger, class, or duration requires a separate analogical analysis, and the facial posture leaves particular applications for as-applied litigation.

Licensing states the same boundary in a different setting. New York State Rifle and Pistol Association v. Bruen invalidated a discretionary proper cause standard and described objective shall-issue licensing as permissible on the terms in footnote 9, with a caveat for lengthy wait times or exorbitant fees. The comparison of federal and state firearms law supplies the setting for that boundary, because incorporation makes the federal standard binding on state licensing while footnote 9 preserves a described class of objective state regimes. A state regime receives no general approval and no general condemnation from the holding. The regime stands or falls on the objectivity of its standards and on the historical demonstration offered for the burden imposed.

The doctrine leaves three matters open at the strength that the opinions state. The first concerns the level of generality at which the historical tradition is described. Justice Barrett, concurring in United States v. Rahimi, warned that the chosen level can determine the outcome, and the majority supplies no fixed rule for that choice. The second concerns applications that a facial holding does not reach. Justice Gorsuch, concurring in United States v. Rahimi, stressed that the decision resolved a facial challenge only and left as-applied challenges open. The third concerns the content of the presumptively lawful categories beyond the examples District of Columbia v. Heller gave, because footnote 26 stated that the examples were not exhaustive and the opinion defined neither the full membership of a listed category nor the status of an unlisted measure.

Precision about those limits also disciplines the claims built on the leading decisions, because a holding travels only as far as its text, posture, and qualifications permit. New York State Rifle and Pistol Association v. Bruen did not invalidate licensing generally. United States v. Rahimi did not require a historical twin and did not sustain every threat based prohibition. District of Columbia v. Heller did not decide the validity of each presumptively lawful category in a particular application. United States v. Miller did not announce the general theory that lower courts later attributed to the decision. Each limit comes from an opinion itself, and fidelity to the limit is part of fidelity to the holding.

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Frequently Asked Questions

Q: What did Heller decide about the Second Amendment?

District of Columbia v. Heller held that the Second Amendment protects an individual right to possess a firearm unconnected with service in a militia, and to use that arm for traditionally lawful purposes, such as self-defense within the home. Justice Scalia wrote for a five to four majority that the operative clause conferred an individual right and that the prefatory clause announced a purpose but did not limit or expand the operative clause. The Court struck down the District of Columbia handgun ban and struck down a requirement that firearms in the home be kept unloaded and disassembled or bound by a trigger lock, because that requirement made defensive use in the home impossible.

Q: Did Heller say the Second Amendment right is unlimited?

District of Columbia v. Heller stated the opposite qualification in express terms. Justice Scalia wrote that, like most rights, the right secured by the Second Amendment is not unlimited, and that nothing in the opinion should be taken to cast doubt on longstanding prohibitions on possession of firearms by felons and by persons described in the opinion as mentally ill, on laws forbidding carrying in sensitive places such as schools and government buildings, or on laws imposing conditions and qualifications on the commercial sale of arms. Footnote 26 stated that the identified presumptively lawful measures were examples only and that the list did not purport to be exhaustive. The opinion also stated that the right was not a right to keep and carry any weapon whatsoever in any manner whatsoever and for whatever purpose.

Q: What did McDonald add to Second Amendment law?

McDonald v. City of Chicago held that the Second Amendment right recognized in District of Columbia v. Heller is fully applicable to the states through the Fourteenth Amendment, because self-defense is a fundamental right deeply rooted in the history and tradition of the nation and implicit in the concept of ordered liberty. Justice Alito wrote an opinion joined in full by Chief Justice Roberts and Justices Scalia and Kennedy, resting incorporation on the Due Process Clause and declining to revisit The Slaughter-House Cases. Justice Thomas supplied the fifth vote through a concurrence resting incorporation on the Privileges or Immunities Clause. The challenges to Chicago and Oak Park handgun restrictions were remanded following the holding, and no single rationale commanded five votes on the clause question.

Q: What test did Bruen create for Second Amendment cases?

New York State Rifle and Pistol Association v. Bruen prescribed a text and historical tradition test and rejected the two step means-end framework that the courts of appeals had applied. When the plain text of the Second Amendment covers conduct by an individual, the Constitution presumptively protects that conduct. The government must then justify a regulation by demonstrating that the regulation is consistent with the historical tradition of firearm regulation in the United States. The government must identify a well-established and representative historical analogue, not a historical twin, and a court asks whether the historical and challenged regulations are relevantly similar under the metrics of how and why each regulation burdens the right to armed self-defense. Comparable justification and comparable burden are the central considerations in that comparison.

Q: Did Rahimi limit Bruen under the Second Amendment?

United States v. Rahimi applied the framework from New York State Rifle and Pistol Association v. Bruen and corrected a stricter reading of that framework, rather than replacing the framework itself. The majority stated that some courts had misunderstood the methodology of the Second Amendment cases, that the precedents were not meant to suggest a law trapped in amber, and that the amendment permits more than regulations identical to ones from 1791. The appropriate analysis asks whether a challenged regulation is consistent with the principles that underpin the regulatory tradition, and a challenged regulation need not be a dead ringer for a historical predecessor. On that method, the Court sustained section 922(g)(8) against a facial challenge by analogy to surety laws and laws against going armed.

Q: What did Miller hold about the Second Amendment in 1939?

United States v. Miller reversed a district court ruling that had quashed an indictment under the National Firearms Act and remanded for further proceedings. Jack Miller and Frank Layton had been indicted for transporting an unregistered short-barreled shotgun in interstate commerce without a stamp-affixed written order. The unanimous opinion by Justice McReynolds stated that, in the absence of any evidence tending to show that possession or use of such a shotgun had some reasonable relationship to the preservation or efficiency of a well regulated militia, the Court could not say that the Second Amendment guarantees the right to keep and bear such an instrument. The Court declined to take judicial notice that the shotgun was ordinary military equipment and rejected a separate reserved powers objection.

Q: Does the Second Amendment cover modern arms?

Caetano v. Massachusetts answered that question through the text of District of Columbia v. Heller. A per curiam opinion vacated a Massachusetts judgment that had sustained a stun gun prohibition on three grounds, holding that each ground contradicted Heller. The opinion stated that the Second Amendment extends, prima facie, to all instruments that constitute bearable arms, even those that were not in existence at the time of the founding. Modernity does not make a weapon unusual, and Heller had rejected the proposition that only weapons useful in warfare are protected. The disposition was a vacatur and remand of the state court judgment, rather than a final judgment from the Supreme Court striking the Massachusetts statute by name.

Q: Was the bump stock case a Second Amendment ruling?

Garland v. Cargill decided no Second Amendment question. The case was a statutory interpretation dispute about the definition of a machinegun in section 5845(b) of the National Firearms Act, which covers a weapon that shoots automatically more than one shot, without manual reloading, by a single function of the trigger. By a vote of six to three, with Justice Thomas writing for the majority, the Court held that a semiautomatic rifle equipped with a bump stock is not a machinegun under that definition, because the trigger functions once per shot and because firing requires the shooter to maintain manual forward pressure rather than occurring automatically. The Bureau of Alcohol, Tobacco, Firearms and Explosives therefore exceeded statutory authority in the rule classifying bump stocks as machineguns.

Q: What is the difference between a facial challenge and an as-applied challenge in a Second Amendment case?

A facial challenge argues that a statute is unconstitutional in all applications, and the challenger must show that no set of circumstances exists under which the statute would be valid. An as-applied challenge argues that a statute is unconstitutional in the application to the challenger or to a particular set of circumstances, without claiming that every application fails. United States v. Rahimi illustrates the difference in operation. Zackey Rahimi mounted a facial challenge to section 922(g)(8), the Supreme Court held that the provision survives that form of challenge, and Justice Gorsuch stated in concurrence that the holding resolved a facial challenge only and left as-applied challenges open for different persons and different circumstances.

Q: What did Justice Stevens argue in dissent in Heller?

Justice Stevens filed a dissent in District of Columbia v. Heller, joined by Justices Souter, Ginsburg, and Breyer, arguing that the text, structure, and history of the amendment showed that the amendment protected a militia-related right. On that reading, the prefatory clause identified the object that the operative clause served, and the amendment protected the right to keep and bear arms for certain military purposes without curtailing legislative power over nonmilitary use and possession. Justice Stevens also read United States v. Miller as having settled that understanding, and criticized the majority for departing from precedent by treating United States v. Miller as a narrow decision about the type of weapon rather than as a settlement of the relationship between the right and militia service.

Q: What did Justice Breyer argue in dissent in Heller?

Justice Breyer filed a separate dissent in District of Columbia v. Heller, joined by Justices Stevens, Souter, and Ginsburg, that proceeded from an assumption made for purposes of argument. Even assuming that the amendment protects an individual self-defense right, Justice Breyer argued that a court should apply an interest-balancing inquiry to a challenged regulation, weighing the burden on the protected interest against the governmental interests that the regulation served. Applying that inquiry, the dissent concluded that the District of Columbia handgun ban and storage requirement were a permissible response to urban gun violence. The majority declined to adopt that balancing method and struck the provisions down on the ground that each provision conflicted with the core protected conduct in the home.

Q: What does “in common use” mean in the Supreme Court’s Second Amendment cases?

In District of Columbia v. Heller, Justice Scalia wrote that the sorts of weapons protected are those in common use at the time, and the opinion tied that limitation to the historical tradition of prohibiting the carrying of dangerous and unusual weapons. The phrase therefore performs a classificatory function in the analysis. Common use places an arm within the class that the opinion described as protected, while the paired characteristics of danger and unusualness identify the class that a tradition of prohibition had reached. United States v. Miller supplied part of the background for that classification, because District of Columbia v. Heller read the earlier decision as turning on the type of weapon rather than on the identity or militia enrollment of the possessor.

Q: Which statutes were tested in the Supreme Court’s Second Amendment decisions?

The sequence tested a series of distinct enactments and local provisions. United States v. Miller concerned the National Firearms Act of 1934 as applied to an unregistered short-barreled shotgun transported in interstate commerce. District of Columbia v. Heller concerned District of Columbia provisions prohibiting handgun registration and requiring firearms in the home to be kept inoperable. McDonald v. City of Chicago concerned handgun restrictions maintained by Chicago and Oak Park. Caetano v. Massachusetts concerned a Massachusetts prohibition on possession of a stun gun. New York State Rifle and Pistol Association v. Bruen concerned the New York proper cause licensing standard. United States v. Rahimi concerned section 922(g)(8) of title 18, and Garland v. Cargill concerned a federal rule under the National Firearms Act definition in section 5845(b).

Q: What did the concurrences add in Bruen?

Three concurrences in New York State Rifle and Pistol Association v. Bruen marked different boundaries of the majority holding. Justice Kavanaugh, joined by Chief Justice Roberts, emphasized that the decision did not disturb the statements in District of Columbia v. Heller and McDonald v. City of Chicago about presumptively lawful measures, quoted footnote 9 approvingly, and stated that shall-issue regimes may use objective requirements such as background checks, mental-health records checks, fingerprinting, and training in firearms handling and in laws regarding the use of force. Justice Alito stressed the narrowness of the decision and stated that the ruling did not rest on empirical assessments of the effects of the laws. Justice Barrett addressed the historical inquiry itself, including which period controls and the risk of treating post-enactment practice as liquidating meaning.

Q: What did Justice Thomas argue in dissent in Rahimi?

Justice Thomas dissented alone in United States v. Rahimi, and the dissent agreed with the majority about the tradition on the question of why a regulation burdens the right, while disagreeing about the question of how a regulation burdens the right. Justice Thomas argued that neither the surety laws nor the laws against going armed were sufficiently similar on the burden metric. The surety laws did not disarm anyone, because a bond forfeited on breach of the peace leaves a person in possession of arms. The laws against going armed required a conviction for an act of public terror, while section 922(g)(8) imposes a prohibition after a civil protective order and a judicial finding. On that reasoning, principle level comparison departed from the analogical comparison that New York State Rifle and Pistol Association v. Bruen required.

Q: Can states require a license to carry a handgun in public after Bruen?

Footnote 9 in New York State Rifle and Pistol Association v. Bruen stated that nothing in the analysis should be interpreted to suggest the unconstitutionality of shall-issue licensing regimes in 43 states, under which a general desire for self-defense is sufficient to obtain a permit. The footnote stated that such regimes do not necessarily prevent law-abiding, responsible citizens from exercising the right, often require a background check or a firearms safety course, and appear to contain only narrow, objective, and definite standards guiding licensing officials, rather than an appraisal of facts, an exercise of judgment, and a formation of an opinion. The footnote preserved a caveat for lengthy wait times or exorbitant fees that deny ordinary citizens public carry. The holding invalidated discretionary proper cause standards, rather than licensing as a general practice.

Q: What standard did the lower courts use for Second Amendment cases between Heller and Bruen?

Between District of Columbia v. Heller in 2008 and New York State Rifle and Pistol Association v. Bruen in 2022, the courts of appeals coalesced around a two step framework. At the first step, a court asked whether the challenged law burdened conduct within the scope of the Second Amendment as historically understood. At the second step, a court applied means-end scrutiny, in most circuits intermediate scrutiny requiring an important governmental objective and a reasonable fit between the objective and the challenged law, with strict scrutiny rarely applied. Under that framework, the courts of appeals upheld the large majority of challenged regulations, including many licensing regimes, categorical prohibitions, and restrictions on particular weapons and magazines. New York State Rifle and Pistol Association v. Bruen later described that approach as a combination of history with means-end scrutiny.

Q: Does the Second Amendment restrict state governments in the same way it restricts the federal government?

McDonald v. City of Chicago held that the Second Amendment right recognized in District of Columbia v. Heller is fully applicable to the states through the Fourteenth Amendment. The position before that holding was different. The Bill of Rights originally restrained only the federal government under Barron v. Baltimore, and United States v. Cruikshank and Presser v. Illinois each held that the amendment restrained only the federal government and left the states free to regulate, without conducting a modern incorporation inquiry. McDonald v. City of Chicago did not describe a diminished version of the right against state governments. The right that bound the District of Columbia under District of Columbia v. Heller was the right that bound the states after incorporation, stated in the same terms and grounded in self-defense as a fundamental right.

Q: What historical laws did the Rahimi majority rely on?

The majority in United States v. Rahimi rested the historical comparison on two bodies of law. Surety laws allowed a person reasonably suspected of future misbehavior, including threatened violence against a spouse, to be required to post a bond that was forfeited on breach of the peace, and the obligation targeted identified individuals and carried procedural protections. Laws against going armed, described as affray laws, punished carrying dangerous or unusual weapons in a manner that terrified the public, with forfeiture of the arms and imprisonment. Neither body of law prohibited firearm possession by a general class. Each addressed identified threatening individuals, and the majority treated that shared direction as the relevant similarity on the question of why the historical laws burdened the right, against the temporary and judicially conditioned burden in section 922(g)(8).

Q: What should a student remember about the Second Amendment cases for an exam?

A complete answer tracks method, holding, and qualification together for each decision in sequence. United States v. Miller decided a weapon question on an absence of evidence and remanded. District of Columbia v. Heller held an individual right centered on self-defense in the home and stated presumptively lawful categories inside the holding. McDonald v. City of Chicago applied the right fully to the states. Caetano v. Massachusetts extended coverage prima facie to all bearable arms. New York State Rifle and Pistol Association v. Bruen rejected means-end scrutiny and required consistency with a historical tradition shown by a representative analogue. United States v. Rahimi sustained section 922(g)(8) against a facial challenge through principle level analogy and rejected any requirement of a historical twin.