Question not identified.

1. Whether 18 U.S.C. § 922(g)( 3), the federal statute that prohibits firearm possession by a person who “is an unlawful user of … any controlled substance,” violates the Second Amendment either facially or as applied to an individual who was under the influence of marijuana at the time of possession . 2. Whether 18 U.S.C. § 922(g)(3)’s ban on firearm possession by “an unlawful user” of a controlled substance—a term not defined in the statute— is unconstitutionally vague.