Kenneth Robert Buck is a lawyer and politician who represents Colorado's 4th congressional district in the U.S. House of Representatives as a Republican. From March 30, 2019, to March 27, 2021, Buck served as chair of the Colorado Republican Party. He was formerly the district attorney for Weld County, Colorado. Buck serves on the House Judiciary Committee and the House Foreign Affairs Committee. He is the author of “Capitol of Freedom,” “Drain the Swamp,” and recently “Crushed: Big Tech's War on Free Speech.”