CNN's Stelter: This is when Trump needs to have credibility

Brian Stelter unpacks Trump's surprise visit to a military hospital for what the White House says was a "routine visit." Hopefully that's true and all is well, he says, but the White House "gives us new reasons to distrust it almost every day. So skepticism is not just understandable, it's not just acceptable, it is necessary." Abigail Tracy and Dan Rather also weigh in.