Which department manages embargoes related to national security?

The U.S Department of Treasury is responsible for managing embargoes related to national security through its Office of Foreign Assets Control (OFAC). This office administers and enforces economic and trade sanctions based on U.S. foreign policy and national security goals. These sanctions can include embargoes on specific countries or individuals that threaten U.S. security or foreign policy interests, which is why the Treasury Department plays a critical role in this area.

The other departments listed do have important functions, but they do not specifically handle embargoes. The Department of Justice focuses on enforcing the law and administering justice; the Department of Agriculture is primarily concerned with policies related to food, agriculture, and rural development; and the Department of Energy manages national energy policy and nuclear material but is not involved in sanction enforcement. Thus, the Treasury Department is the clear authority for national security-related embargoes.