Article I of the U.S. Constitution places the legislative function in the hands of two bodies, the Senate and the House of Representatives. The House is intended to be more closely tied to the popular will, with members serving only two years before facing another election.
In the division of labor between the House and Senate, the Senate is given authority in the area of foreign relations but the House is the only one able to initiate revenue bills. Impeachment is a duty of the House, while the Senate conducts trials that result from impeachment by the House.
The House and Senate both hold sessions in the United States Capitol Building in Washington DC.