Presumptive GOP presidential nominee Donald Trump is slamming Jeb Bush for refusing to back him, saying he isn't a "man of honor." Trump criticized his 2016 primary rival for breaking the pledge he signed last year vowing to support the eventual Republican nominee. “Jeb Bush dishonored his pledge. I mean he dishonored his pledge,” Trump said on the "Mike Gallagher Show" on Wednesday, as first reported by BuzzFeed News. “He signed a pledge, and, if you remember, they all wanted me to sign it, so I signed it. But that pledge is a guarantee, there’s no outs. It doesn’t say,...