Claire Conner McCaskill (born July 24, 1953) is an American politician who served as a United States senator from Missouri from 2007 to 2019 and as State Auditor of Missouri from 1999 to 2007. McCaskill is a native of Rolla, Missouri. She graduated from the University of Missouri and the University of Missouri School of Law. A member of the Democratic Party, McCaskill served as a member of the Missouri House of Representatives from 1983 to 1989, as Jackson County Prosecutor from 1993 to 1998, a ...