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.
Younger v. Harris Younger v. Harris, 401 U.S. 37 (1971) , was a case in which the United States Supreme Court held that United States federal courts were required to abstain from hearing any civil rights tort claims brought by a person who is currently being prosecuted for a matter arising from that claim.