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.
Ashwander v. Tennessee Valley Authority Ashwander v. Tennessee Valley Authority, 297 U.S. 288 (1936) , was a United States Supreme Court case that provided the first elaboration of the doctrine of "Constitutional avoidance".