Merrick B. Garland, Attorney General, et al., Petitioners v. Michael Cargill

The Supreme Court ruled that the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) exceeded its statutory authority by classifying bump stocks as machine guns under federal law. The Court determined that a semiautomatic rifle equipped with a bump stock does not meet the statutory definition of a machine gun because it does not fire more than one shot by a single function of the trigger.