Donald Trump fires back at 2016 rival: You 'couldn't be elected dog catcher'

Real-estate magnate Donald Trump fired off angry tweets at one of his GOP rivals in the presidential race Wednesday, accusing him of being a has-been who couldn't get elected to office again. The rival, former New York Gov. George Pataki (R), has recently been criticizing Trump's controversial comments about illegal immigration. Pataki told Business Insider on Tuesday that Trump was "disrespectful" and subsequently wrote a letter to the Republican field urging them to join him in denouncing Trum...