Dueling Republican front-runners Newt Gingrich and Mitt Romney have been trading barbs on money and wealth the last few days. After Romney said Gingrich should return the $1.6 million he received from Freddie Mac, Gingrich shot back by saying Romney should return the money he made at Bain Capital by "bankrupting companies and laying off employees over the years."

Today, Romney said Gingrich is a "very wealthy man" and suggested the former House speaker may not have much in common with the majority of Americans. "Newt Gingrich has wealth from having worked in government," Romney told Jan Crawford of CBS News in an interview. "He's a wealthy man, a very wealthy man. If you have a half a million dollar purchase from Tiffany's, you're not a middle class American."

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