Senate Majority Leader Mitch McConnell on Tuesday broke his silence over President Trump’s virulent Twitter attacks on Robert Mueller — saying the special counsel had “great credibility” and should not be fired. “Well look, I agree with the president’s lawyers that Bob Mueller should be allowed to finish his job,” the Kentucky Republican told reporters on Capitol Hill. “I think he was an excellent appointment. I think he will go wherever the facts lead him and I think he will have great credibility with the American people when he reaches a conclusion of this investigation,” he said.