The Supreme Court is set to hear a significant case addressing whether individuals who use illegal drugs, including those who regularly smoke marijuana, can legally possess firearms. The justices will review a federal law that bars drug users from owning guns, a law that has come under scrutiny and has led to debates regarding gun rights and the Second Amendment. This examination includes questions about the rights of habitual drug users and the implications of the law on gun ownership. The case has drawn attention amid broader discussions surrounding drug policy and gun regulation.