The U.S. Supreme Court rules in favor of a Texas man who is a marijuana user, holding that the federal government cannot automatically treat him as barred from gun ownership solely because of his marijuana use. The case centers on a 1968 federal law that prohibits people who use or are addicted to certain controlled substances from possessing firearms. The Court’s decision rejects the federal government’s position as presented in the case and affects how the law is applied to marijuana users, including situations where marijuana is treated differently under state law. Multiple reports describe the ruling as a significant setback for the Trump administration, which defended the government’s reading of the statute. The ruling is characterized as a landmark decision for gun rights and controlled-substance restrictions, with potential implications for future enforcement and litigation involving firearm eligibility for people who use marijuana.