Via WaPo:
President Obama’s campaign is out with its second ad suggesting that former Massachusetts governor Mitt Romney skirted taxes altogether at some points in his career.
As with a previous ad raising the same idea, this spot combines facts about Romney’s money-management history with allegations that can’t be proved — at least, unless the Republican candidate releases his tax returns.
“Did Romney pay 10 percent in taxes? Five percent? Zero?” the narrator asks. “We don’t know.” A clip plays in which Romney says he’s “happy to go back and look” at his past tax returns.