Porter, Katherine M. (Katherine Moore), 1974-

Katherine Moore Porter (born January 3, 1974) is an American politician. A member of the Democratic Party, she has served as the U.S. Representative for California's 45th congressional district since 2019.

Born in Fort Dodge, Iowa, she graduated from Phillips Academy in Andover, Massachusetts before earning her B.A. from Yale University and J.D. from Harvard Law School. After graduation, Porter was a law clerk for Judge Richard S. Arnold of the United States Court of Appeals for the 8th Circuit in Little Rock, Arkansas. She practiced with the law firm of Stoel Rives LLP in Portland, Oregon, and was the Project Director for the National Conference of Bankruptcy Judges' Business Bankruptcy Project. Porter worked as an Associate Professor of Law at the University of Nevada, Las Vegas School of Law before joining the faculty of the University of Iowa College of Law as an associate law professor in 2005; she became a full professor there in 2011 before joining the faculty as a tenured professor at the University of California, Irvine School of Law in 2011. Porter's textbook Modern Consumer Law addresses consumer laws in light of Dodd–Frank and the Consumer Financial Protection Bureau. In March 2012, California Attorney General Kamala Harris appointed Porter to be the state's independent monitor of banks in a nationwide $25 billion mortgage settlement. As monitor, she oversaw the banks' implementation of $9.5 billion in settlement reforms for Californians.

In 2018, Porter successfully challenged two-term incumbent Mimi Walters in California's 45th congressional district, becoming the first Democrat to represent the area since 1953. In Washington, Congresswoman Porter has remained committed to putting Orange County families first. As a member of the House Oversight and Reform Committee and Vice Chair of the Subcommittee on Government Operations, she’s asked tough questions of bank CEOs and administration officials to hold them accountable to the American people. She’s also a proud member of the House Natural Resources Committee, where she works tirelessly to protect our beaches and public lands, elevate science-based solutions to the climate crisis, and keep Orange County families safe from wildfires. She chairs the Oversight and Investigations Subcommittee, where she leads efforts to hold polluters accountable.