The answer is the State Departmet.
The United States Department of State is often referred to as the State Department. It advises the President and represents the country in international affairs and leads the nation in foreign policy issues.
Equivalent to the foreign ministry of other countries, it was established as the nation's first executive department.
The State Department's implements the foreign policy of the United States, operates the nation's diplomatic missions abroad, negotiates treaties and agreements with foreign entities, and represents the United States at the United Nations.
It is headed by the Secretary of State, a member of the Cabinet who is nominated by the President and confirmed by the Senate.
