Trump says he’s ‘not joking’ about a possible third term

President Trump said Sunday he’s “not joking” about serving a possible third term, marking the second time in less than three weeks that he’s floated the idea. “I’m hearing — you don’t sound like you’re joking. I’ve heard you joke about this a number of times,” NBC News’s Kristen Welker said during a phone call with the president, discussing a third…