In District of Columbia v. Heller, 554 U.S. 570 (2008), the Supreme Court ruled 5–4 that the Second Amendment protects an individual’s right to keep and bear arms for self-defense, unconnected to service in a militia. The Court struck down two District of Columbia laws: a ban on private handgun possession and a requirement that any firearm kept at home be unloaded and either disassembled or locked with a trigger lock. Justice Antonin Scalia wrote the majority opinion, joined by Chief Justice Roberts and Justices Kennedy, Thomas, and Alito.
The D.C. Laws at the Center of the Case
Dick Heller, a special police officer who carried a handgun on duty at a federal building, applied to register a handgun to keep at home for personal protection. The District denied the application. That denial rested on a web of local laws that made functional firearm ownership almost impossible for ordinary D.C. residents.
The Firearms Control Regulations Act of 1975 barred registration of any handgun that had not already been registered before September 24, 1976. Because registration was a prerequisite to ownership, private handgun possession was effectively frozen in the District for more than three decades.1D.C. Law Library. District of Columbia Code 7-2502.02 – Registration of Certain Firearms Prohibited
Long guns like rifles and shotguns could still be registered, but a separate provision required them to be kept unloaded and either disassembled or bound by a trigger lock at all times inside the home, with narrow exceptions for a place of business or lawful recreation.2D.C. Law Library. District of Columbia Code Subchapter VII – Miscellaneous Provisions A separate criminal statute made carrying a pistol anywhere in the District without a license illegal, with penalties of up to five years for carrying outside the home.3D.C. Law Library. District of Columbia Code 22-4504 – Carrying Concealed Weapons; Possession of Weapons During Commission of Crime of Violence; Penalty Because a handgun could not be registered, no license would issue. The result was a near-total prohibition on functional handguns in D.C. homes.
What the Supreme Court Held
The Court answered a question it had not directly addressed since 1939: whether the Second Amendment protects a right tied only to militia service or an individual right that exists regardless of militia membership. The majority chose the individual right, with self-defense at its core.
Both D.C. provisions fell. The handgun ban failed because it prohibited an entire class of weapons that Americans overwhelmingly choose for lawful home defense. Handguns are the most popular self-defense weapon in the country, and the home is where the need for protection is most acute. Banning that class of weapon gutted the core of the right.4Legal Information Institute. District of Columbia v. Heller
The trigger lock and disassembly rule fell for a related reason. Requiring every firearm in the home to be unloaded and locked at all times made it impossible to use in an emergency. A right to a weapon that cannot be used when an intruder is at the door is not a functional right at all.5Constitution Annotated. Amdt2.4 Heller and Individual Right to Firearms
How the Majority Read the Second Amendment
Justice Scalia split the amendment into two parts. The prefatory clause reads: “A well regulated Militia, being necessary to the security of a free State.” The operative clause reads: “the right of the people to keep and bear Arms, shall not be infringed.” The majority concluded the prefatory clause announces a purpose but does not narrow what the operative clause protects.4Legal Information Institute. District of Columbia v. Heller
Turning to founding-era dictionaries and commentaries, the Court found that “the right of the people” meant all members of the political community, not soldiers alone. “Keep arms” meant having weapons in one’s possession. “Bear arms” meant carrying them, for purposes including but not limited to military confrontation. The militia the prefatory clause references was understood as all able-bodied citizens who could be called to service and would bring their own privately owned arms.5Constitution Annotated. Amdt2.4 Heller and Individual Right to Firearms
From that reading came a second rule about which weapons the amendment covers. Drawing on its 1939 decision in United States v. Miller, the Court said the protection extends to arms “in common use” for lawful purposes, as opposed to “dangerous and unusual weapons” outside the mainstream of civilian ownership.6Justia. District of Columbia v. Heller Handguns easily met that test.
Limits the Court Left in Place
The majority took care to say the individual right is not unlimited, and it identified categories of regulation it called “presumptively lawful”:
- Prohibitions on possession by felons and the mentally ill. Federal law codifies this in 18 U.S.C. § 922(g), which bars firearm possession by anyone convicted of a crime punishable by more than one year in prison, anyone adjudicated as mentally defective, and several other categories including fugitives and domestic violence offenders.7Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts
- Bans on carrying firearms in sensitive places such as schools and government buildings.4Legal Information Institute. District of Columbia v. Heller
- Conditions on the commercial sale of firearms, including licensing and record-keeping rules for dealers.
- Restrictions on “dangerous and unusual weapons” outside common civilian use.6Justia. District of Columbia v. Heller
The Court described these as examples rather than a closed list. It also declined to specify what level of judicial scrutiny lower courts should apply to firearm laws going forward, leaving that question for later cases.8Constitution Annotated. Post-Heller Issues and Application of Second Amendment to States
The Dissents
Justice John Paul Stevens, joined by Justices Souter, Ginsburg, and Breyer, argued that the Second Amendment protects only the right to bear arms in connection with organized militia service. Stevens read the prefatory clause as a strict limit on the operative clause. He noted that several state constitutions of the founding era explicitly named self-defense as a reason for the right to bear arms, and the Second Amendment did not. If the framers had wanted to protect an individual right for personal reasons, Stevens contended, they would have said so.6Justia. District of Columbia v. Heller
Justice Stephen Breyer, joined by the same three justices, wrote separately. Even assuming an individual right, Breyer would have upheld the D.C. laws under an interest-balancing test asking whether the burden on the right was out of proportion to the government’s interest in reducing urban gun violence. The majority rejected that approach outright. Scalia wrote that no other enumerated constitutional right is subject to a freestanding interest-balancing test, and that allowing one would mean the right was only as strong as future judges thought it should be: “A constitutional guarantee subject to future judges’ assessments of its usefulness is no constitutional guarantee at all.”6Justia. District of Columbia v. Heller
How Heller Applies to the States
Heller struck down laws of the District of Columbia, a federal enclave. That left an open question about state and local firearm laws, since the Bill of Rights originally restricted only the federal government.
Two years later, in McDonald v. City of Chicago, 561 U.S. 742 (2010), the Court answered that question. Chicago had a handgun ban comparable to the District’s. In another 5–4 decision, Justice Samuel Alito wrote that the individual right recognized in Heller applies to states and cities through the Due Process Clause of the Fourteenth Amendment.9Justia. McDonald v. City of Chicago The Court found the right fundamental to the nation’s scheme of ordered liberty and deeply rooted in its history.10Oyez. McDonald v. Chicago After McDonald, every state and local handgun ban in the country became constitutionally suspect, and the categories Heller preserved became the nationwide framework.
How the Standard Has Evolved Since
Because Heller did not spell out how to evaluate laws that burden the right, lower courts developed their own two-step framework: ask whether a regulation touches conduct within the amendment’s original meaning, then, if it does, apply means-end scrutiny weighing the government’s interest against the burden on the right.
The Supreme Court discarded that framework in New York State Rifle & Pistol Association v. Bruen, 597 U.S. ___ (2022). The case challenged New York’s requirement that concealed carry applicants show a “special need” for self-protection. Writing for a 6–3 majority, Justice Thomas struck down the requirement and set a new standard: when the Second Amendment’s text covers an individual’s conduct, that conduct is presumptively protected, and the government must show any regulation is “consistent with this Nation’s historical tradition of firearm regulation.”11Justia. New York State Rifle and Pistol Association Inc. v. Bruen Courts no longer weigh public-safety benefits against the burden on the right. The government must instead point to historical analogues from the founding era or, in some cases, Reconstruction.12Legal Information Institute. New York State Rifle and Pistol Assn Inc. v. Bruen
The line from Heller to Bruen is direct. Heller grounded the individual right in founding-era meaning, rejected interest-balancing, and read the scope of the right through historical practice. Bruen made historical analysis the sole method for evaluating firearms laws. The balancing approach Breyer wanted in his Heller dissent is now foreclosed, and every challenge to a firearm regulation turns on whether the government can identify a sufficiently analogous historical tradition of restricting the same conduct.