The federal government is composed of three branches: legislative, executive, and judicial. The legislative branch makes laws and is composed of the House of Representatives and the Senate, which form the United States Congress. Senators serve six-year terms and are elected by the people, while congressmen serve two-year terms and are also elected by the people.
The executive branch carries out laws and includes the president, vice president, cabinet, and most federal agencies. Cabinet members advise the president. They include the vice president, heads of executive departments, and other high-ranking government officials. Cabinet members are nominated by the president and must be approved by a majority of the Senate.
The judicial branch evaluates laws and is composed of the Supreme Court and other courts. Supreme Court justices are nominated by the president and are then confirmed by the senate and serve for life.