Summary (tl;dr)

The Supreme Court of the United States has struck down a federal law prohibiting individuals who are "unlawful users" of illegal drugs, such as marijuana, from possessing firearms, asserting that the broad ban violates Second Amendment rights.

Essential Background

The Second Amendment of the U.S. Constitution protects the right of individuals to keep and bear arms. Since 1968, federal law (18 U.S.C. §922(g)(3)) has prohibited gun possession by "an unlawful user of or addicted to any controlled substance," alongside other categories like felons and fugitives. This prohibition has long been a component of federal gun control efforts, with the government arguing that habitual drug users are akin to "habitual drunkards" historically denied gun rights. However, recent Supreme Court rulings have expanded the interpretation of Second Amendment rights, leading to increased challenges against existing gun restrictions.

The Full Story

On Thursday, June 18, 2026, the Supreme Court unanimously ruled in United States v. Hemani that the federal ban on gun ownership for "unlawful users" of controlled substances is unconstitutional. The case involved Ali Hemani, a Texas resident who admitted to regularly using marijuana and was prosecuted for possessing a firearm under the federal statute.

Justice Neil Gorsuch, delivering the opinion of the Court, stated that the law was "too broad and overly harsh," automatically banning individuals from gun ownership regardless of the specific substance, quantity, or whether their drug use posed an actual danger to themselves or others. The Court found that the government's historical arguments defending the sweeping ban were insufficient to demonstrate consistency with the nation's tradition of firearm regulation. While striking down the blanket prohibition, the Court did leave open the possibility that specific denials of gun rights to "addicts" or "unusually dangerous" individuals impaired by drugs could be permissible. The Trump administration had advocated for upholding the conviction against Hemani.

Why It Matters

This landmark decision significantly impacts gun rights and drug policy in the United States. Millions of Americans who use marijuana, even in states where it is medically or recreationally legal but remains federally illegal, may now have a stronger legal basis to possess firearms without federal prosecution. The ruling is a defeat for federal efforts to broadly regulate firearms based on drug use and further solidifies the Supreme Court's trend of expanding Second Amendment protections. It also adds complexity to the ongoing debates surrounding gun control and public safety, prompting questions about how future regulations might address individuals who are demonstrably impaired by substance use.

Geographic Location

• Supreme Court of the United States, Washington, D.C., District of Columbia, United States (ruling in United States v. Hemani)