Question: when was the last time a us senator resigned
Answer: Mel Martínez Florida September 9 , 2009 John Ensign Nevada March 3 , 2011 Jim DeMint South Carolina January 1 , 2013 John Kerry Massachusetts February 1 , 2013 Resigned to become Secretary of State Max Baucus Montana February 6 , 2014 Resigned to become Ambassador to China Tom Coburn Oklahoma January 3 , 2015 Jeff Sessions Alabama February 8 , 2017 Resigned to become Attorney General Al Franken Minnesota January 2 , 2018 Resigned after allegations of sexual harassment .