31 U.S.C. § 101 AgencyIn this title, “agency” means a department, agency, or instrumentality of the United States Government.
31 U.S.C. § 102 Executive agencyIn this title, “executive agency” means a department, agency, or instrumentality in the executive branch of the United States Government.
31 U.S.C. § 103 United StatesIn this title, “United States”, when used in a geographic sense, means the States of the United States and the District of Columbia.