Vienna Convention on the Law of Treaties
According to the Congressional Research Service, different definitions of "treaty" are used in international law and in domestic U.S. law. According to the Vienna Convention on the Law of Treaties, "The term 'treaty' has a broader meaning under international law than under domestic law. Under international law, 'treaty' refers to any binding international agreement. Under domestic U.S. law, 'treaty' signifies only those binding international agreements that have received the advice and consent of the Senate."