John Michael Katko (/ˈkætkoʊ/; born November 9, 1962) is an American attorney and politician serving as the U.S. Representative for New York's 24th congressional district, based in Syracuse, since 2015. A member of the Republican Party, he previously was an Assistant United States Attorney who led the organized crime division at the U.S. Attorney's Office in Syracuse. In that role, he helped to prosecute gang members under the Racketeer Influenced and Corrupt Organizations Act. In the 116th Congress, he was a co-chair of the House moderate Republican faction, the Tuesday Group. He is the sole chair of the renamed Republican Governance Group for the 117th Congress.