Today Newt Gingrich fired back at Mitt Romney's suggestion that he should return the money he earned consulting for Freddie Mac by condemning Romney's private equity career: If Governor Romney would like to give back all the money he's earned from bankrupting companies and laying off employees over his years at Bain, then I would be glad to then listen to him. And I will bet you $10, not $10,000, that he won't take the offer.Gingrich has basically adopted the language of the anti-corporate left with this line of attack. It may have some political resonance, although it's doubtful that