Very early Sunday morning, Donald Trump took to Twitter to once again let loose. This time, Mark Cuban was in the crosshairs. “I know Mark Cuban well,” POTUS tweeted. “He backed me big-time but I wasn’t interested in taking all of his calls. He’s not smart enough to run for president!” The billionaire owner of the Dallas Mavericks and investor on ABC’s “Shark Tank” responded simply, “LOL.” An hour later, Cuban tweeted that he didn’t know what triggered the president’s comment, saying, “But isn’t it better for all of us that he is tweeting rather than trying to govern?” Follow...