United States v. Belmont, 301 U.S. 324 (1937), was a dispute between the federal executive branch and the State of New York over property rights to a deposit from a former Russian corporation with August Belmont & Company, a private New York City banking firm. Belmont established executive predominance over state laws and constitutions in the sphere of foreign policy, and allocated the constitutional power for initiating executive agreements solely to the president of the United States.