Department of State

The Department of State is the senior executive department of the United States government and the lead agency for foreign affairs, established by an Act of Congress on July 27, 1789, as the first federal department created under the new Constitution (initially named the Department of Foreign Affairs, renamed by the Act of September 15, 1789). It is headed by the Secretary of State, a Cabinet officer appointed by the President with the advice and consent of the Senate under Article II, Section 2 of the Constitution. The Secretary ranks first in the Cabinet order of precedence and stands fourth in the presidential line of succession under the Presidential Succession Act of 1947, after the Vice President, Speaker of the House, and President pro tempore of the Senate. Thomas Jefferson served as the first Secretary of State (1790–1793).

The Department implements the President's foreign policy as the constitutional principal in international affairs (the President's authority articulated in United States v. Curtiss-Wright Export Corp., 1936, as the "sole organ" of the nation in external relations). It operates through a network of more than 270 diplomatic and consular posts—embassies, consulates, and missions to international organizations—staffed by the Foreign Service, created in its modern professionalized form by the Rogers Act of 1924, and the Civil Service, alongside locally employed staff. Functional and regional bureaus (such as the Bureaus of European and Eurasian Affairs, Near Eastern Affairs, and International Organization Affairs) report through Under Secretaries and Assistant Secretaries. Core functions include negotiating treaties and executive agreements, issuing passports and visas (through the Bureau of Consular Affairs), administering foreign assistance, protecting Americans abroad, and representing the U.S. at the United Nations and other multilateral bodies. The Secretary is also the legal custodian of the Great Seal of the United States and publishes the official record of diplomacy, the Foreign Relations of the United States series.

In 2026 the Department remains headquartered at the Harry S. Truman Building in the Foggy Bottom neighborhood of Washington, D.C. Its work is intertwined with the U.S. Agency for International Development (USAID) for development assistance, and it administers the Foreign Service Officer Test (FSOT) and Foreign Service Officer Assessment as the gateway to the diplomatic career service across five career tracks: Consular, Economic, Management, Political, and Public Diplomacy. Notable Secretaries include Dean Acheson (architect of Cold War containment and the Marshall Plan), Henry Kissinger, Madeleine Albright (first woman in the role, 1997), Colin Powell, and Hillary Clinton.

For the FSOT and U.S. Foreign Policy paper, the Department of State is foundational: candidates must know its 1789 founding, the Secretary's succession rank, the Rogers Act professionalization of the Foreign Service, the five career tracks, and the constitutional division of foreign-affairs power between the President and Congress (the latter's treaty-ratification and appropriations roles). Typical question angles test the Department's interagency relationship with the National Security Council, Defense, and USAID; the distinction between treaties (Senate two-thirds consent) and executive agreements; and the structure of regional versus functional bureaus.