The Arms Export Control Act (22 U.S.C. § 2778(a) and 2794(7)) provides that the President shall designate the articles and services deemed to be defense articles and defense services for purposes of import or export controls. The President has delegated to the Secretary of State the authority to control the export and temporary import of defense articles and services. The items designated by the Secretary of State for purposes of export and temporary import control constitute the U.S. Munitions List (USML) specified in part 121 of this subchapter. Defense articles on the USML specified in part 121 of this subchapter that are also subject to permanent import control by the Attorney General on the U.S. Munitions Import List enumerated in 27 CFR part 447 are subject to temporary import controls administered by the Secretary of State. Designations of defense articles and defense services on the USML in part 121 of this subchapter are made by the Department of State with the concurrence of the Department of Defense. The scope of the USML shall be changed only by amendments made pursuant to section 38 of the Arms Export Control Act (22 U.S.C. § 2778). For a designation or determination on whether a particular item is enumerated on the USML, see § 120.4.