Whether a prosecution under 18 U.S.C. §§ 922(g) and 924(a)(2) requires the Government to prove that the defendant knew he belonged to the relevant category of persons barred from possessing a firearm.
Holding
Yes. The Government must prove that the defendant knew he possessed a firearm and knew he had the relevant prohibited status when he possessed it.
Reasoning
Section 924(a)(2) punishes a person who "knowingly violates" § 922(g). Section 922(g) makes firearm possession unlawful when specified elements are present, including a status element, a possession element, a jurisdictional commerce element, and a firearm-or-ammunition element. Read in ordinary English, the word "knowingly" applies to the material elements that make the conduct criminal, including the defendant's prohibited status.
The Court began with the longstanding presumption that Congress ordinarily requires a culpable mental state for each element that criminalizes otherwise innocent conduct. That presumption applies with particular force when Congress has expressly included a general scienter requirement, as it did by punishing those who "knowingly violate" § 922(g).
The commerce requirement is different. It is a jurisdictional element that establishes federal authority to regulate the conduct, rather than an element describing the wrong Congress sought to prevent. No party argued that the defendant must know his possession affected interstate commerce, and the Court treated that element as outside the ordinary scienter presumption.
Knowing one's prohibited status is important because ordinary firearm possession can be innocent. It is the defendant's status—such as being a felon or an alien unlawfully present—that makes possession unlawful. Requiring knowledge of that status helps distinguish a culpable act from an innocent mistake.
The statute is not a minor-penalty public-welfare law for which strict liability might be more readily inferred. A conviction can result in up to 10 years' imprisonment, a severe penalty that reinforced the Court's conclusion that Congress did not intend to punish people who lacked the required guilty mental state.
The Government's reliance on the rule that ignorance of the law is no excuse did not alter the result. A defendant's lack of awareness of the statute forbidding firearm possession differs from a mistake about a collateral legal matter—here, whether the defendant's immigration status rendered his presence unlawful—that prevents him from understanding the significance of his conduct and negates the required knowledge element.
The statutory and legislative history did not overcome the presumption of scienter. Before 1986, lower-court authority was not uniform, and Congress then added the provision punishing only those who "knowingly" violate § 922(g). The available legislative materials were at most inconclusive and did not show a clear congressional purpose to exclude knowledge of status.