U.S, Senator Bob Corker isn’t totally ruling out the idea he might run for Governor of Tennessee in 2018. But it seems unlikely--"If that were something I were going to attempt to pursue," he said to reporters Wednesday, "it would have been good to think about it a year ago." Corker, a two-term Senator, announced his retirement earlier this week. He’s had a sometimes-rocky relationship with President Trump. Last month, at a Rotary Club meeting in Chattanooga, Corker said Trump hadn’t