The Constitution requires that U.S. senators must be at least 30 years of age, citizens of the United States for at least nine years, and residents of the states from which they are elected. Members of the House of Representatives must be at least 25, citizens for seven years, and residents of the states which send them to Congress. The states may set additional requirements for election to Congress, but the Constitution gives each house the power to determine the qualifications of its members.