Green on June 9 announced his resignation from the 7th Congressional District, just months after his reelection, to pursue an opportunity in the private sector. His district represents a swath of rural counties in middle and west Tennessee, as well as Montgomery County and parts of Davidson and Williamson counties.

U.S. Rep. Mark Green's upcoming retirement will trigger a special election and open the flood gates for potential candidates. Why it matters: A U.S. House seat is one of the most desirable jobs in politics.

Tennessee Rep. Mark E. Green, the Homeland Security chair, says he will resign after the House votes again on the budget reconciliation bill.