Reflecting on the #WDBJ shooting, Donald J. Trump tells CNN's Chris Cuomo that "This isn't a gun problem, this is a mental problem," adding that he's "very much into the Second Amendment." cnn.it/1MQ1t4E "In the old days they had mental institutions for people like this because he was really, definitely borderline and definitely would have been and should have been institutionalized," Trump told Cuomo. "At some point somebody should have seen that, I mean the people close to him should have seen