Republican Mitt Romney’s campaign unleashed new attacks on President Barack Obama Tuesday, with one of Romney’s top surrogates saying he wished Obama “would learn to be an American.”
On a conference call with reporters, former New Hampshire Governor John Sununu blasted Obama and his campaign, calling them a “bunch of liars.”
“I wish the president would learn how to be an American,” Sununu said, although he later backed away from his comment somewhat.

![Yesterday, GOP presidential nominee hopeful Rick Santorum followed other candidates Newt Gingrich and Mitt Romney along with President Barack Obama in releasing his tax returns.
The above Reuters graphic shows how the four men’s 2010 tax returns stack up against each other. [REUTERS]](http://25.media.tumblr.com/tumblr_lzi3zt4UAm1qmaoalo1_1280.gif)