United States v. Lopez

Background

A 12th-grade student brought a loaded handgun to a San Antonio high school and was first charged under Texas law. Federal agents then charged him under the Gun-Free School Zones Act of 1990, which made it a federal crime to knowingly possess a firearm within a defined school zone. After a bench trial and conviction in federal court, the Fifth Circuit reversed, and the Supreme Court agreed to decide whether Congress had power under the Commerce Clause to pass the law.

Reasoning

The Court examined the Constitution’s commerce power and three categories where Congress may act: (1) channels of interstate commerce, (2) instruments or things in interstate commerce, and (3) local activities that substantially affect interstate commerce. The majority found the school-gun law did not fit the first two categories and was not an economic activity that could, when aggregated, be tied to interstate commerce. The statute also lacked any requirement that possession be connected to interstate commerce. Upholding the law, the Court said, would risk converting the commerce power into a general federal police power.

Real world impact

The ruling invalidates the Gun-Free School Zones Act as written and confines Congress’ authority in this area. That means states retain primary responsibility for criminal laws about guns at and near schools. The opinion notes that Congress later amended the law to add findings in 1994, but the Government did not rely on those later findings in this case.

Dissents or concurrances

Several Justices wrote separate opinions. Two concurrences joined the judgment but urged restraint or doctrinal refinement. Other Justices dissented, arguing Congress reasonably could link school gun violence to harms affecting education and the national economy, and thus to interstate commerce.