Marian E. Krogius "Mimi" Walters (born May 14, 1962) is an American politician who is the U.S. Representative for California's 45th congressional district. A Republican, she was a member of the California State Senate for the 37th District from 2012 to 2015. She previously represented the 33rd Senate District from 2008 to 2012 before redistricting.