Corey Lewandowski, the campaign manager for 2016 GOP frontrunner Donald Trump, exposed a blatant conflict of interest on Wednesday that the Fox News Channel has been hiding for months. Lewandowski showed how Fox News has been hiding the fact that Fox News Channel Vice President Bill Sammon has a daughter working for the campaign of the Washington establishment-backed Sen. Marco Rubio (R-FL). Sammon's daughter, Brooke Sammon, is Rubio's national press secretary, and obviously both have a vested interest in the success of the Rubio campaign and the demise of the other campaigns. CNN's Erin Burnett asked Lewandowski about Fox News's...