Christie knocks candidates for being 'vague' on entitlement reform

Chris Christie is positioning himself as the candidate in the race who's offering specific policy proposals, while other candidates, he says, are being "vague."

Holding a town hall event in Davenport, Iowa, on Friday, the New Jersey governor appeared to single out one candidate in particular, though not by name.

"I heard a candidate complain the other day that, you know, 'my positions' -- meaning that candidate's positions -- 'on comments I made about entitle