The United States Congress has members.
United States Congress . Members are usually affiliated to the Republican Party or to the Democratic Party , and only rarely to a third party or as independents . Congress has 535 voting members : 435 Representatives and 100 Senators . The House of Representatives has six non-voting members in addition to its 435 voting members . These members can , however , sit on congressional committees and introduce legislation . These members represent Washington , D.C. , Puerto Rico , American Samoa , Guam , the Northern Mariana Islands and the U.S. Virgin Islands .