Tom C. Clark

“ We cannot agree. That case invoked the supervisory power of a federal court over a federal law enforcement officer and we held that the latter might be enjoined from appearing in a state trial for the purpose of offering evidence previously seized by him illegally as a federal officer and so found by a federal court. But even if an exclusionary rule were fashioned to bar use of the federal agent's testimony in the absence of a federal court restraint, the petitioner would be entitled to no relief. ”

“ Mr. Justice BLACK and Mr. Justice DOUGLAS would reverse the judgment of the Court of Appeals for the reasons stated in Mr. Justice BLACK's dissenting opinion in Linkletter v. Walker, 381 U.S. 640, 85 S.Ct. ”