Republican House Majority Narrows By One

Republican Tennessee Rep. Mark Green submitted his resignation from the U.S. House of Representatives Friday, narrowing the GOP’s already-slim majority by one seat. His departure, effective July 20, comes just months before expected fiscal showdowns on Capitol Hill, including potential government funding fights in the fall.

Green, a retired U.S. Army officer who has represented Tennessee’s 7th Congressional District since 2019, announced in June that he planned to step down after passage of the One Big Beautiful Bill Act. While he did not previously provide a timeline, his resignation letter, addressed to House Republican leadership, formalized his exit. (RELATED: Senior GOP Lawmaker Announces Early Retirement From Congress)

“It’s with a heavy heart that I say farewell,” Green said on X. “To my constituents across Tennessee’s 7th District—thank you. The trust you put in me is humbling. I will look back fondly on my years of serving as your voice in Washington.”

It’s with a heavy heart that I say farewell.

To my constituents across Tennessee’s 7th District—thank you. The trust you put in me is humbling. I will look back fondly on my years of serving as your voice in Washington. pic.twitter.com/fwjVMCRtpQ

— Rep. Mark Green (@RepMarkGreen) July 4, 2025

Green said his next endeavor would involve helping the U.S. compete with the Chinese Communist Party (CCP) in the private sector. “While I cannot give the details here, I will be doing something specifically designed to help America compete against the CCP, but this time in business,” he said in a video message.

His departure temporarily lowers the GOP’s seat count in the House, reducing its current advantage until a special election is held. Green’s seat will remain vacant until that contest, the date of which has not been announced.

Green also served as chair of the House Homeland Security Committee, where he played a central role drafting the border provisions in the recently passed One Big Beautiful Bill Act.