blasted the Obama campaign as a "bunch of liars" for suggesting that Romney could have committed a felony if he lied to the Security and Exchange Commission about when he retired from Bain Capital.

"The president clearly demonstrated that he has absolutely no idea how the American economy functions," the former New Hampshire governor said. "The men and women all over America who have worked hard to build these businesses, their businesses from the ground up is how our economy became the envy of the world -- it is the American way."

"I wish this president would learn how to be an American," he added.

Obama campaign spokesperson Lis Smith later told reporters that Sununu's rhetoric was proof that Romney's campaign had grown desperate.

"The Romney campaign has officially gone off the deep end," Smith said. "The question is what else they’ll pull to avoid answering serious questions about Romney’s tenure at Bain Capital and investments in foreign tax havens and offshore accounts. This meltdown and over-the-top rhetoric won’t make things better -- it only calls attention to how desperate they are to change the conversation."