In District of Columbia v. Heller, decided 5–4 in June 2008, the Supreme Court held for the first time that the Second Amendment protects an individual’s right to possess a firearm for self-defense in the home, unconnected to service in a militia. The ruling struck down two D.C. laws: a near-total ban on private handgun possession, and a requirement that any lawful firearm kept at home be unloaded and either disassembled or bound by a trigger lock. Every gun regulation in the country is now measured against the framework this decision started.
The D.C. Law Under Challenge
Washington, D.C.’s Firearms Control Regulations Act of 1975 was among the strictest gun laws in the country. It banned the purchase, sale, transfer, and possession of handguns by D.C. residents, with a narrow carve-out for owners who had registered a handgun under an earlier 1968 system and re-registered within 60 days of the new law taking effect. After that window closed, handguns were permanently unregisterable in the District. Rifles and shotguns were still allowed, but the law required them to be kept unloaded and either disassembled or locked at all times.1Justia U.S. Supreme Court Center. District of Columbia v. Heller, 554 U.S. 570 (2008)
Dick Heller was a special police officer who carried a handgun on duty at the Federal Judicial Center. He wanted to keep one at home for protection and applied for a registration certificate. The District refused, as it did for virtually every private applicant. Heller sued.
Attorney Robert Levy at the Cato Institute had originally recruited six plaintiffs. Five were dismissed for lack of standing because they had never actually applied for a permit and been denied. Heller had, which gave him a concrete personal injury a court could address. The trial court sided with D.C. and dismissed his case, but the D.C. Circuit reversed, holding that the Second Amendment protects an individual right. The District took the case to the Supreme Court.
The Central Question: Militia Right or Individual Right?
The Second Amendment 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.”2Constitution Annotated. U.S. Constitution – Second Amendment
D.C. argued the amendment protects only a collective right tied to organized state militias, aimed at preventing federal disarmament of those militias. Under that reading, the handgun ban was ordinary public safety legislation. Heller argued the text protects an individual right to own firearms, and that banning the country’s most common self-defense weapon obliterates that right rather than regulates it.
The Court’s Holding on the Second Amendment
Justice Antonin Scalia wrote the majority opinion, joined by Chief Justice John Roberts and Justices Anthony Kennedy, Clarence Thomas, and Samuel Alito. The Court divided the amendment into a prefatory clause (the militia language) and an operative clause (the right of the people to keep and bear arms). The prefatory clause announces a purpose. It does not limit the operative clause that grants the right.3Supreme Court of the United States. District of Columbia v. Heller 554 U.S. 570 (2008)
The majority pointed to the way “the people” is used elsewhere in the Bill of Rights. In the First Amendment’s assembly clause and the Fourth Amendment’s protection against unreasonable searches, “the people” refers to individual persons. The Court saw no reason to read the phrase differently in the Second Amendment.4Constitution Annotated. Amdt2.4 Heller and Individual Right to Firearms
Turning to founding-era dictionaries, legal commentaries, and state constitutions, the majority concluded that “keep arms” meant possessing them, “bear arms” meant carrying them (including outside military service), and “arms” meant weapons ordinary people commonly owned. The individual right to own firearms, the Court said, existed before the Constitution and was codified, not created, by the Second Amendment.
Why the Handgun Ban and Trigger Lock Fell
Once the individual-right interpretation was established, D.C.’s laws did not survive long. Handguns, the Court noted, are the class of firearm Americans overwhelmingly choose for lawful self-defense at home. A total prohibition on that class strikes at the core of what the Second Amendment protects.3Supreme Court of the United States. District of Columbia v. Heller 554 U.S. 570 (2008)
The trigger lock and disassembly requirement failed for a connected reason. A firearm kept nonfunctional at all times cannot be used for self-defense in an emergency, which is the very purpose the Court had just recognized the amendment protects. The Court held the requirement unconstitutional as applied to lawful self-defense in the home.4Constitution Annotated. Amdt2.4 Heller and Individual Right to Firearms
What Heller Did Not Invalidate
The majority was careful to say the Second Amendment right is not unlimited, and it listed categories of firearms regulation it considered “presumptively lawful”:1Justia U.S. Supreme Court Center. District of Columbia v. Heller, 554 U.S. 570 (2008)
- Laws prohibiting possession by convicted felons and people with serious mental illness.
- Laws banning firearms in sensitive places such as schools and government buildings.
- Conditions on commercial sale, including licensing and background-check requirements.
- Prohibitions on “dangerous and unusual weapons” that are not typically owned by law-abiding citizens for lawful purposes. Drawing on United States v. Miller (1939), the Court said the amendment protects weapons “in common use” for lawful purposes.
The Court called the list illustrative rather than exhaustive. The line it drew was between regulating the conditions of gun ownership, which remains permissible, and eliminating the core right of armed self-defense in the home, which does not.
One thing the majority pointedly did not do was specify the level of judicial scrutiny courts should use to evaluate future Second Amendment challenges. Justice Scalia said the D.C. ban would fail under any standard, so there was no need to choose. That silence left lower courts to improvise for the next fourteen years.
The Dissents
The four dissenting justices agreed the D.C. law should have been upheld but took two distinct routes to get there.
Justice Stevens: A Right Tied to Militia Service
Justice John Paul Stevens, joined by Justices David Souter, Ruth Bader Ginsburg, and Stephen Breyer, read the Second Amendment as protecting only a right to possess and use firearms in connection with militia service. He argued the amendment was drafted to answer specific ratification-era fears that Congress would disarm the state militias, and that its drafters showed no interest in restricting legislatures’ authority over private civilian gun use. In his reading, “the right of the people to keep and bear Arms” was a single, unified concept tied to military readiness rather than two independent rights.5Legal Information Institute. District of Columbia v. Heller (Stevens, J., Dissenting)
Justice Breyer: Balancing the Right Against Public Safety
Justice Breyer wrote separately to propose a different method. Even assuming the amendment protects some individual right, he argued, courts should weigh the burden a gun law places on that right against the government’s public safety interests. Under this interest-balancing approach, D.C.’s handgun ban, enacted against a background of severe urban gun violence, would have survived.1Justia U.S. Supreme Court Center. District of Columbia v. Heller, 554 U.S. 570 (2008)
The majority rejected that framework, calling it a judge-empowering standard that would let courts decide the scope of a constitutional right by policy preference. The disagreement over method, fixed textual meaning versus flexible balancing, would drive Second Amendment litigation for years.
From Heller to McDonald, Bruen, and Rahimi
Because D.C. is a federal district, Heller by its own terms only bound the federal government. Whether the Second Amendment applied to states and cities was a separate question, and Chicago had a handgun ban much like D.C.’s. In McDonald v. City of Chicago (2010), a 5–4 Court held that the individual right recognized in Heller applies to state and local governments through the Fourteenth Amendment’s Due Process Clause. Handgun bans at every level of government were finished.6Justia U.S. Supreme Court Center. McDonald v. City of Chicago, 561 U.S. 742 (2010)
The scrutiny gap Heller left behind persisted until 2022. In New York State Rifle & Pistol Association v. Bruen, the Court struck down New York’s requirement that concealed-carry applicants show a special need for a permit, and it replaced the lower courts’ means-end balancing tests with a text-and-history standard. When the Second Amendment’s text covers the conduct, the government must show that its restriction is consistent with the nation’s historical tradition of firearms regulation.7Constitution Annotated. Rahimi and Applying the Second Amendment Bruen Standard
Two years later, United States v. Rahimi (2024) softened how strictly that historical test must be applied. A modern gun law does not need a precise historical twin to survive. It needs a historical analogue that is relevantly similar in how and why it burdens armed self-defense.7Constitution Annotated. Rahimi and Applying the Second Amendment Bruen Standard
Heller established the individual right. McDonald extended it to every government in the country. Bruen and Rahimi set the method courts now use to test firearms laws against it. Any current Second Amendment question runs through that sequence, and it starts with what the Court decided in Dick Heller’s case.