<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The United States Congress is the bicameral legislature of the Federal government of the United States . The legislature consists of two chambers: the Senate and the House of Representatives . </P> <P> The Congress meets in the United States 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 . Congress has 535 voting members: 435 Representatives and 100 Senators . The House of Representatives has six non-voting members representing Puerto Rico, American Samoa, Guam, the Northern Mariana Islands, the U.S. Virgin Islands, and Washington, D.C. in addition to its 435 voting members . Although they cannot vote, these members can sit on congressional committees and introduce legislation . </P>

The 2 houses of congress are called what