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CNN's Candy Crowley talks to a Mitt Romney's campaign adviser about President Obama and a possible VP pick.
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Irwin, Pennsylvania (CNN) â€“ Mitt Romney's national campaign co-chair John Sununu apologized Tuesday afternoon for saying he wished President Barack Obama would "learn how to be an American" earlier in the day.
Appearing on CNN's "The Situation Room with Wolf Blitzer," Sununu said he regretted using those words on a campaign conference call.