Supreme Court ponders law making it a crime for gun owners to use marijuana

Lead: On March 2, 2026, the U.S. Supreme Court heard arguments in a case testing a federal statute that bars certain drug users from possessing firearms. The dispute centers on Ali Danial Hemani, whom the government says admitted using marijuana several times a week and whom it charged under a law that carries up to 15 years in prison. The 5th U.S. Circuit vacated the indictment on Second Amendment grounds, and the Justice Department appealed. A ruling is expected by summer and could affect millions in states that have loosened marijuana laws.

Key Takeaways

  • The federal statute used to charge Hemani prohibits firearm possession by certain drug users and carries a maximum sentence of 15 years.
  • The 5th U.S. Circuit Court of Appeals dismissed Hemani’s indictment, finding the law unconstitutional as applied under the Second Amendment.
  • The Justice Department says Hemani admitted using marijuana several times a week and therefore counts as a “persistent” user under the statute.
  • Defense counsel Naz Ahmad emphasizes Hemani’s local ties and contends occasional marijuana use alone should not justify disarmament.
  • About 40 states have legalized marijuana to some degree, a fact cited by the defense when warning about the law’s broad reach.
  • Gun-rights groups and civil liberties organizations are unusually aligned in opposing application of the law to marijuana users.
  • Gun-safety groups warn that an adverse ruling for the government could complicate the National Instant Criminal Background Check System, which operates on a tight three-day window.

Background

The contested statute dates to federal efforts to limit firearm access by people the government considers impaired by or addicted to controlled substances. Historically, Congress and many states have enacted prohibitions on firearm possession tied to substance misuse; the government argues those roots make the modern law constitutionally analogous to founding-era restrictions. Opponents counter that modern marijuana legalization in roughly 40 states changes the social and legal context, making routine users a different category than the historical subjects of disarmament laws.

Hemani’s indictment attracted heightened attention because similar statutes were used in a recent prosecution involving President Joe Biden’s son; however, the Hemani case focuses solely on marijuana use and possession of a legally purchased, secured firearm in his home. The 5th Circuit evaluated the statute through the lens of the Supreme Court’s recent Second Amendment precedents, which require a historical analogue for modern restrictions. That reasoning underpinned the appeals court’s decision to throw out the indictment.

Main Event

At Monday’s argument, Solicitor General D. John Sauer pressed the Court to uphold the statute, telling justices that longstanding practice supports disarming people who habitually use intoxicating substances. In briefs he pointed to colonial- and founding-era regulations that targeted “habitual drunkards” as an analogue supporting modern restrictions on firearm access for persistent substance users. The government also presented Hemani’s admitted frequency of marijuana use to justify applying the ban in his case.

Defense lawyer Naz Ahmad portrayed Hemani as a community member with strong local ties and academic background, arguing the statute should not strip a lawfully purchased firearm from someone who used marijuana intermittently. Ahmad warned that a ruling for the government could sweep in casual users — for example, people who take a marijuana edible or gummy for sleep — in states where the substance is legal. She urged the Court to require a narrower interpretation that distinguishes addiction or dangerous impairment from mere, nonimpaired use.

The argument drew an unusual coalition of amici and stakeholders. On one hand, civil liberties groups and some gun-rights organizations argued against the government’s broad reading; on the other hand, gun-safety organizations urged careful preservation of the background-check regime and public-safety mechanisms that rely on clear statutory lines. Justices extensively questioned both sides about how to map modern statutory burdens onto historical practice and how to define “persistent” or “habitual” use for constitutional purposes.

Analysis & Implications

If the Court reverses the 5th Circuit and upholds the statute’s application to marijuana users, the decision could affirm broad congressional authority to disarm certain categories of drug users despite state-level legalization. That outcome would preserve a tool prosecutors can use in gun cases, but it could also chill firearm ownership among people who use marijuana legally or occasionally. Politically, such a ruling could provoke legislative responses in states that have moved to decriminalize or legalize cannabis, and it could intensify calls for clearer federal guidance.

Conversely, a ruling for Hemani would constrain federal reach into firearm regulation for many categories of drug users, especially where use is noncompulsive and state law permits it. Gun-safety advocates warn that a narrow view could create gaps in the background-check process: dealers must get a response from the FBI within a three-day window, and ambiguous disqualifications could complicate rapid determinations. That could prompt Congress to revise statutory language or funding to improve reporting and adjudication in the NICS system.

The decision will also refine how courts apply the Supreme Court’s modern Second Amendment framework, which asks whether a challenged regulation is analogous to historical restrictions. Justices must decide whether founding-era controls on “habitual drunkards” equate to modern laws addressing illicit-drug users, and whether that analogy can be stretched to encompass marijuana use today. The case may therefore set a precedent affecting other categories of firearm regulation tied to behavioral or medical conditions.

Comparison & Data

Era Target Typical Penalty Basis
Founding era “Habitual drunkards” or those deemed unfit Local disarmament, fines Community safety and militia readiness
Modern federal statute Illegal drug users/persistent users Up to 15 years’ imprisonment Public-safety and crime-prevention rationale

The table summarizes the government’s analogy: historic local practices focused on removing weapons from people judged dangerous because of intoxication, while the modern statute criminalizes firearm possession by certain drug users with heavier federal penalties. The central legal question is whether the social status and legal treatment of marijuana users today are materially different from those historical categories, a determination that affects both constitutional analysis and practical enforcement.

Reactions & Quotes

“It’s outrageous that they tried to get him on a marijuana gun charge,” said Aidan Johnston, arguing the government seeks to criminalize conduct tolerated at the founding.

Gun Owners of America (federal affairs director)

“The Second Amendment doesn’t support disarming and prosecuting somebody for mere possession of a firearm if they happen to have used marijuana occasionally,” Naz Ahmad argued for the defense, emphasizing Hemani’s community ties.

Defense counsel Naz Ahmad (CUNY law professor)

“Whatever you do, it’s essential that you keep the rules clear so that in that short window, federal agencies can give a quick answer to the dealers,” warned Douglas Letter, stressing the three-day NICS constraint.

Brady Center to Prevent Gun Violence (senior counsel)

Unconfirmed

  • Claims that Hemani was a drug dealer are presented by government filings but are not the basis of the current gun charge and have not been independently established in court records cited in argument.
  • Allegations of terrorist ties mentioned in some briefs are asserted by prosecution materials but have not been litigated as part of the firearm indictment.

Bottom Line

The Supreme Court’s forthcoming decision will determine whether a federal ban on firearm possession by certain drug users can constitutionally apply to people who use marijuana, even in states that permit it. The case tests how modern federal gun restrictions map onto founding-era practices and will shape the boundary between federal firearm regulation and changing state drug policies.

Practically, the ruling could either preserve a tool used by prosecutors—maintaining the status quo for background checks and disqualifications—or narrow federal reach, pressuring Congress to revise statutes or reporting systems to address any enforcement gaps. For millions of Americans who live in jurisdictions where marijuana is legal, the opinion will clarify whether lawful use can coexist with the right to keep and bear arms.

Sources

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