House Homeland Security Chair Green Resigns Narrowing GOP Majority

Rep. Mark Green (R-Tenn.), chair of the House Homeland Security Committee, officially resigned from Congress effective July 20, 2025, narrowing the Republican majority in the House. Green, a combat veteran and former Tennessee state senator, announced he would leave to start a private-sector business aimed at helping the U.S. compete against the Chinese Communist Party. His resignation follows his last congressional vote on the 'One Big Beautiful Bill,' a key piece of legislation focused on border security. Green's departure reduces the Republican majority to 219-212, complicating House Speaker Mike Johnson's efforts to pass legislation amid tight margins. Several candidates have already announced intentions to run for Green's seat, which covers Tennessee's 7th District, a solidly red area. Green's resignation adds to the challenges Republicans face ahead of upcoming special elections and a potential government shutdown battle.