In between Martin v. Hunter's Lessee and Buckley v. Valeo which was the first case to assert ultimate Supreme Court authority over state courts in civil matters of federal law?
Martin v. Hunter's Lessee Martin v. Hunter's Lessee, 14 U.S. 304 (1816) was a landmark United States Supreme Court case decided on March 20, 1816. It was the first case to assert ultimate Supreme Court authority over state courts in civil matters of federal law.
United States v. Lopez United States v. Alfonso D. Lopez, Jr., 514 U.S. 549 (1995) was the second United States Supreme Court case since the New Deal to set limits to Congress' power under the Commerce Clause of the United States Constitution. The Supreme Court held that the federal Gun-Free School Zones Act of 1990, which banned possession of handguns near schools, was unconstitutional because it did not have a substantial impact on interstate commerce. After the "Lopez" decision, the act was amended to specifically only apply to guns that had been moved via interstate commerce.