Buck, Ken, 1959-

Kenneth Robert Buck (born February 16, 1959) is an American lawyer and politician who represents Colorado's 4th congressional district in the United States House of Representatives as a Republican. From March 30, 2019 to March 27, 2021, Buck served as chair of the Colorado Republican Party, having replaced Jeff Hays. Formerly the District Attorney for Weld County, Colorado, Buck ran unsuccessfully for U.S. Senate in 2010, narrowly losing to Democrat Michael Bennet. In Congress, Buck has emerged as one of the foremost proponents of antitrust enforcement in the Republican Party.

After earning his BA from Princeton, Buck moved west and worked in Wyoming at the state legislative services office and received a Juris Doctor from the University of Wyoming College of Law in 1985. He was also an instructor at the University of Denver Law School and for the National Institute for Trial Advocacy in Colorado. In 1986, he was hired by Congressman Dick Cheney to work on the Iran-Contra investigation. Following that assignment, he worked as a prosecutor with the U.S. Department of Justice in Washington D.C. In 1990 Buck joined the United States Attorney's Office for the District of Colorado where he became Chief of the Criminal Division. Buck was formally reprimanded and required to take ethics classes in 2001 for a meeting he had with defense attorneys about a felony case he thought should not be pursued. Only one of the three men initially indicted on felony charges was convicted, for a misdemeanor offense. Buck said he is "not proud" of the incident that effectively ended his career with the Justice Department,[14] but says he felt it was "unethical" to prosecute such a "weak" case against the three men. One of the three men donated $700 to Buck's 2010 Senate campaign.

Buck was elected the District Attorney for Weld County, Colorado in 2004. When he suspected that Social Security numbers were being stolen by undocumented immigrants, he raided a tax service in Greeley, Colorado and seized more than 5,000 tax files. The American Civil Liberties Union sued Buck's office for violating the privacy of the service's clients and after an appeal to the Colorado Supreme Court, costing the county approximately $150,000, the raid was deemed unconstitutional. Buck has said that his time enforcing laws for the Justice Department and Weld County stoked his desire to become a lawmaker himselel.<.p>