Sen. Dan Coats (R-Ind.) on Tuesday announced that he will not run for reelection in 2016. "Today I am announcing that I will not seek re-election to the United States Senate," Coats said in a statement. "This was not an easy decision. While I believe I am well-positioned to run a successful campaign for another six-year term, I have concluded that the time has come to pass this demanding job to the next generation of