Donald Trump dares Hillary Clinton to pick Elizabeth Warren as her running mate

REUTERS/Carlo Allegri Presumptive Republican presidential nominee Donald Trump began Friday morning by taunting Hillary Clinton and Elizabeth Warren on Twitter, daring the presumptive Democratic nominee to pick the Massachusetts senator as her running mate. Warren has already made clear that she's not afraid of going after Trump, and she said Thursday she's prepared to serve as vice president if she were chosen as Clinton's running mate. "Pocahontas is at it again!" Trump tweeted in apparent res...