Mark Green, the Republican congressman from Tennessee and chair of the House Homeland Security Committee, retired from Congress to take a job in the private sector that he described as an opportunity “too exciting” or “too thrilling” to pass up. He has also said that he felt his work in Congress was essentially complete after helping advance major GOP priorities such as border security legislation and the Trump-backed tax and budget package.

Officially stated reasons

Green publicly framed his early retirement as a business and career decision: he accepted an undisclosed private‑sector role and chose to leave Congress once the House finished voting on the large Republican tax and budget “megabill.” In statements, he emphasized pride in his legislative record, particularly on border security and the impeachment effort against former Homeland Security Secretary Alejandro Mayorkas, and said that his “time in Congress has come to an end.”

Other reported context

Reporting has noted that Green had already been ambivalent about staying in Congress, having first announced he would not run again in 2024, then re‑entered the race after pressure from fellow Republicans. Some outlets also highlighted that his retirement decision followed public reporting about an extramarital affair and a divorce filing, although Green has maintained that his departure was driven by the private‑sector opportunity and a desire for a break from Congress.