Bill Clinton attacks Romney's tax plan on the math

Bill Clinton cut a video on behalf of President Obama that lays out the shaky math behind Mitt Romney's plan for an across-the-board tax cut. As Clinton points out, though Romney said in the debate that he wasn't cutting taxes for the rich, in the end the plan would add up to a tax cut for people with the highest income."We simply cannot afford to give another round of tax cuts to people who got the benefit of the tax cuts and the economic growth of the last decade. It hasn't worked before, and it won't work this time," Clinton says.