Complex sentence: United States v. Belmont, 310 U.S.324 (1937), was a United States Supreme Court case that struck down a New York law holding that the Supremacy Clause of the United States Constitution prohibited individual states from implementing foreign policy independently of the federal government.
Split into simpler sentences: United States v. Belmont, 310 U.S.324 (1937), was a United States Supreme Court case that struck down a New York law dealing with foreign policy. The Court held that the Supremacy Clause of the United States Constitution prohibited individual states from implementing foreign policy independently of the federal government.