The United States Congress fails to include the United States Senate.
The United States Congress is the bicameral legislature of the federal government of the United States consisting of two chambers : the Senate and the House of Representatives . The Congress meets in the Capitol in Washington , D.C. Both senators and representatives are chosen through direct election , though vacancies in the Senate may be filled by a gubernatorial appointment . Each senator is elected at-large in their state for a six-year term , with terms staggered , so every two years approximately one-third of the Senate is up for election .