According to Article I, Section 3 of the Constitution, each United State’s senator must be an adult who is at least twenty-five years old. a lifetime resident of Washington, DC. a registered voter in

According to Article I, Section 3 of the Constitution, each United State’s senator must be an adult who is at least twenty-five years old. a lifetime resident of Washington, DC. a registered voter in one’s state. a US citizen for at least nine years.