Senate, one of the two lawmaking bodies in the United States. It consists of two senators from each state who serve six-year terms. Every two years, one-third of the Senate is elected. The presiding officer of the Senate is the vice president. Both the House of Representatives and the Senate have an equal voice in legislation. The Constitution requires that a U.S. senator be at least 30 years old, be a citizen for at least nine years, and maintain legal residence in the state represented.
See also: Congress of the United States.