The Constitution implies that the ability to conduct foreign policy is vested entirely in the president. The president has plenary power in the foreign affairs field that does not depend on congressional delegation. Decided December 21, 1936 (argued 1936). Opinion of the Court: George Sutherland → go there Dissenting: McReynolds. Topic: Foreign. United States v. Curtiss-Wright Export Corp., 299 U.S. 304 (1936), is a landmark decision of the Supreme Court of the United States concerning foreign affairs, in which the Supreme Court held that the President has primacy with respect to, and that federal government has broad authority over, foreign affairs. Wiki link