United States Congress:

The Congress of the United States is the biennial meeting of the legislative branch of the United States federal government. It is bicameral, comprising the House of Representatives and the Senate, and all of its members are chosen through direct election of the popular vote. The House of Representatives has 435 members, each representing a congressional district and serving a two-year term. House seats are apportioned among the states by population. Each state has two Senators, regardless of population. There are 100 senators, serving six-year terms.

The United States Constitution vests all legislative powers of the federal government in the Congress. The powers of Congress are limited to those enumerated in the Constitution; all other powers are reserved to the states and the people. Through Acts of Congress, Congress may regulate interstate and foreign commerce, levy taxes, organize the federal courts, maintain the military, declare war, and certain other "necessary and proper" powers.

The Senate and House of Representatives are coequal houses. However, there are some special powers granted to one chamber only. The Senate's advice and consent is required for presidential appointments to high-level executive and judicial positions, and for the ratification of treaties. Bills for raising revenue may only originate in the House of Representatives, and the House must initiate any impeachment proceedings.

Congress meets in the Capitol in Washington, D.C.