US Government

The US Government is the federal constitutional republic created by the United States Constitution, ratified in 1788 and operative from 1789, supplemented by the Bill of Rights (1791) and seventeen subsequent amendments. Its foundational architecture rests on three structural principles: the separation of powers among three coordinate branches; checks and balances, by which each branch restrains the others; and federalism, dividing sovereignty between the national government and the fifty states under the Tenth Amendment, which reserves to the states all powers not delegated to the Union. The Constitution's first three Articles vest legislative power in Congress (Article I), executive power in the President (Article II), and judicial power in the Supreme Court and inferior courts (Article III). The Supremacy Clause (Article VI) makes the Constitution, federal statutes, and treaties the supreme law of the land.

The legislative branch is a bicameral Congress: the Senate, with two members per state regardless of population (a product of the Connecticut Compromise of 1787), and the House of Representatives, apportioned by population and reapportioned each decennial census. Congress holds the enumerated powers of Article I, Section 8 — taxation, commerce, war, and the "necessary and proper" clause expansively construed since McCulloch v. Maryland (1819). The executive branch centers on a President elected indirectly through the Electoral College for a four-year term, limited to two terms by the Twenty-Second Amendment (1951); the President serves as head of state, head of government, and commander-in-chief. The judicial branch, headed by a nine-justice Supreme Court, exercises judicial review — the power to invalidate unconstitutional acts — established in Marbury v. Madison (1803). Key checks include the presidential veto, the Senate's advice-and-consent over appointments and treaties (Article II, Section 2), congressional impeachment (Articles I and II), and Senate confirmation of judges holding office during "good Behaviour."

In its 2026 configuration, the federal government operates a vast administrative state of cabinet departments and independent agencies, with the federal bureaucracy answering primarily to the executive but funded and overseen by Congress through the power of the purse. Landmark constitutional developments include the post-Civil War Reconstruction Amendments (Thirteenth, Fourteenth, Fifteenth), the incorporation doctrine extending Bill of Rights protections against the states via the Fourteenth Amendment's Due Process Clause, and the expansion and later contraction of the Commerce Clause from Wickard v. Filburn (1942) to United States v. Lopez (1995). The amendment process under Article V requires a two-thirds vote of both houses (or a national convention) and ratification by three-fourths of state legislatures.

For the FSOT (Foreign Service Officer Test), the US Government section heavily tests this material in the Job Knowledge component. Candidates must master the precise distribution of powers, the constitutional clauses by name, landmark Supreme Court cases and their holdings, the amendment process, and the mechanics of federalism. Typical question angles include identifying which branch holds a specified power, matching cases to doctrines, and distinguishing concurrent from exclusive federal and state powers. A working command of Marbury, McCulloch, the Bill of Rights, and the war and treaty powers is indispensable.