Question: 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?
Sentence (from "Buckley v. Valeo"): In a "per curiam" (by the Court) opinion, they ruled that expenditure limits contravene the First Amendment provision on freedom of speech because a restriction on spending for political communication necessarily reduces the quantity of expression.
Relevant evidence: No