Bush, on defensive, denies 2016 campaign is imploding

Jeb Bush stumbled at Wednesday's debate, but the following day he spiritedly denied suggestions his White House campaign is on life support, insisting he remains the best candidate to defeat Hillary Clinton. The former Florida governor, a son and brother of two presidents, has not lived up to the hype and monumental fundraising of the first months of his campaign, when he was riding high as presumptive Republican frontrunner. Eager for a breakout moment, he went after his onetime political prote