The United States Supreme Court delivered a pivotal decision on April 26, 1995, in the case U.S. v. Lopez, reshaping the boundaries of federal authority under the Commerce Clause of the U.S. Constitution.

In a 5-4 ruling, the Court struck down the Gun-Free School Zones Act of 1990, declaring it unconstitutional. The law had made it a federal crime to possess a firearm within 1,000 feet of a school. The majority opinion, authored by Chief Justice William Rehnquist, held that the act exceeded Congress's power under the Commerce Clause, which regulates interstate commerce.

The Court reasoned that the possession of a gun near a school did not constitute an economic activity that substantially affected interstate commerce. This decision was the first in nearly six decades to invalidate a federal law on Commerce Clause grounds, marking a significant limitation on Congress's regulatory authority.

The case originated when Alfonso Lopez Jr., a 12th-grade student in San Antonio, Texas, was charged under the Gun-Free School Zones Act after bringing a concealed .38 caliber handgun and five bullets to his high school. Lopez was convicted in federal court, but his appeal ultimately reached the Supreme Court.

The Supreme Court's decision in U.S. v. Lopez remains one of the most consequential rulings in modern constitutional law, influencing subsequent cases involving federal power and states' rights.

Source: Reason