President Donald Trump suggested Wednesday that he might revoke White House credentials for some journalists, following the publication of a survey that showed a dramatic leftward tilt in television news coverage about him. The Media Research Center, a conservative watchdog group, tracked the evening newscasts on ABC, CBS and NBC for the first four months of this year and found more than 1,600 'explicitly positive and negative' statements about the president. The group determined that nine out of 10 of those broadcast statements were negative. It did not include CNN and MSNBC in its research. Trump vented, saying: 'The Fake...