Illinois Sen. Mark Kirk hasn't endorsed a GOP candidate for president, but it's looking more and more like he's on Mitt Romney's team. Kirk said Monday the field is getting down to "Romney and the anti-Romney," listing all of the GOP darlings -- Palin, Bachman, Trump et al -- that have fallen by the wayside. "The underlying story is the rise and rise of Mitt Romney," Kirk said. In regards to the Herman Cain sexual harassment controversy, Kirk said Cain "needs to respond and respond completely." "I do think his story is largely ending," Kirk said. "The critical thing is...