Office of Foreign Assets Control (OFAC) – OFAC Sanctions Regulations, 31 C.F.R. §§ 501-98.
The U.S. Department of the Treasury oversees U.S. economic sanctions and embargoes through its Office of Foreign Assets Control (OFAC). Empowered by the Trading with the Enemy Act of 1917, 50 U.S.C. app. §§ 1-44, and the International Emergency Economic Powers Act, 50 U.S.C. §§ 1701-08, OFAC enforces import and export trade, anti-terrorism, narcotics, human rights and other national security- and foreign policy-based sanctions prohibiting the provision of anything of value, either tangible or intangible, to sanctioned countries, organizations or individuals. The pertinent regulations provide OFAC with broad authority to block or interdict certain "prohibited transactions" involving restricted destinations or parties.