International Traffic in Arms Regulations (ITAR)

U.S. Department of State, Directorate of Defense Trade Controls (DDTC) 
International Traffic in Arms Regulations (ITAR), U.S. Munitions List 
22 CFR 120-130

The U.S. Department of State, DDTC, Bureau of Political-Military Affairs controls the export and temporary import of defense articles, defense services and related technical data from the U.S. to any foreign destination or to any foreign person in the United States or abroad if the items are on the United States Munitions List (USML). 

The USML includes the parts and components which are incorporated into an item in addition to the end item. Some non-military items are on the munitions list such as spacecraft, satellites, toxins, and certain chemical precursors. ITAR maintains the USML.