<human>:  Tell me about the government of the United States.
<bot>: The United States is a federal republic governed by a President who is the head of state and a Congress which is divided into the House of Representatives and the Senate. The government of the United States derives its powers from the Constitution, which establishes a system of separation of powers: it divides governmental responsibilities among the legislative, executive, and judicial branches of the federal government. This system limits the government's power, thereby preventing the government from taking too much control and denying people their civil liberties. The federal government is comprised of agencies, each of which has its own distinct authority and responsibilities. The agencies are responsible for administering laws and policies, managing national resources, protecting the environment, providing financial stability, upholding civil rights and liberties, and conveying the nation's foreign policy. The Supreme Court is the highest court in the U.S. and serves as the final arbiter of the law.