The facts of the case actually concerned the constitutionality of a federal tax on sawed-off shotguns, which in this case was a double barrel 12-gauge Stevens shotgun having a barrel less than 18 inches in length. The National Firearms Act, which was a revenue measure, was challenged by Miller as an attempt to usurp police power reserved to the States and thus beyond congressional power under [[Commerce Clause]], and as a violation of the substantive right protected by the [[Second Amendment]]. The Court rejected both arguments, citing laws passed in the 1780s (just a few years prior to the adoption of the [[Second Amendment]] in [[Massachusetts]], [[New York]] and [[Virginia]] that emphasize the importance of militias. | The facts of the case actually concerned the constitutionality of a federal tax on sawed-off shotguns, which in this case was a double barrel 12-gauge Stevens shotgun having a barrel less than 18 inches in length. The National Firearms Act, which was a revenue measure, was challenged by Miller as an attempt to usurp police power reserved to the States and thus beyond congressional power under [[Commerce Clause]], and as a violation of the substantive right protected by the [[Second Amendment]]. The Court rejected both arguments, citing laws passed in the 1780s (just a few years prior to the adoption of the [[Second Amendment]] in [[Massachusetts]], [[New York]] and [[Virginia]] that emphasize the importance of militias. |