Marian Elaine "Mimi" Walters (née Krogius; born May 14, 1962) is an American businesswoman and politician. A Republican, she served from 2015 to 2019 as the U.S. representative for California's 45th congressional district. Before running for office, Walters was an investment banker from 1988 to 1995, and served as chairwoman of the Laguna Niguel Investment and Banking Committee. She then served two terms on the Laguna Niguel City Council from 1996 to 2004, serving as Mayor in 2000, before representing the 73rd Assembly district in the California State Assembly from 2004 to 2008. She was subsequently elected to the California State Senate, representing the 33rd Senate district from 2008 to 2012 and the 37th Senate district from 2012 to 2015. Walters was elected to represent California's 45th congressional district in the United States House of Representatives in 2014, and was re-elected in 2016. She ran for a third term in the 2018 mid-term elections, but was defeated by Democrat Katie Porter. Early life and education In 1962, Walters was born as Marian Elaine Krogius in Pasadena, California. Walters' father is Tristan Krogius. Walters earned a Bachelor of Arts in political science from the University of California, Los Angeles in 1984. Career Walters was an investment banker from 1988 to 1995. She was an investment executive at the firm of Drexel Burnham Lambert, and later joined the firm of Kidder, Peabody, & Co. Laguna Niguel City Council After serving as chair of Laguna Niguel's Investment and Banking Committee, Walters was appointed to the Laguna Niguel City Council in 1996, after the recently re-elected incumbent Thomas W. Wilson resigned to be appointed to the Orange County Board of Supervisors. Walters served as mayor in 2000, and was elected to a second term that same year. During her time on the City Council, Walters also served on the El Toro Reuse Planning Authority, and opposed efforts to convert Marine Corps Air Station El Toro into a commercial airport. California State Assembly In 2004, Walters was elected to represent the 73rd Assembly District, which includes the coastal Orange and San Diego county communities of Laguna Niguel, Laguna Hills, Oceanside, Dana Point, San Clemente, San Juan Capistrano, and Aliso Viejo. Her term ran from January 2005 to January 2007. In November 2006, she was re-elected to a second term in the Assembly. California State Senate Walters was elected to the State Senate in November 2008.