Mitt Romney Promises 'Millions' Of Jobs -- But Offers No Data To Back It Up President Obama is seizing on a new think-tank study that says Romney's plan to cut tax rates for all brackets, lower the corporate rate, close loopholes and keep taxes low on investments, would require him to eliminate deductions and credits that benefit the lower- and middle-class, such as child credits and mortgage deductions. The Romney campaign is not engaging on the same playing field. When asked Thursday in a conference call how much Rommey's plan might add to the deficit before the economic-growth it projected to create was factored in, along with closing loopholes and cutting spending, the campaign declined to provide specific numbers. In a sense, the Romney campaign is handicapping itself, because Obama is now out on the campaign trail wielding specific numbers against Romney, whacking him over the head with lines like this: "The average middle-class family with children, according to this study, would be hit with a tax increase of more than $2,000." "In order to afford just one $250,000 tax cut for somebody like Mr. Romney, 125 families like yours would have to pay another $2,000 in taxes each and every year," Obama told a crowd in Mansfield, Ohio, on Wednesday. "Does that sound like a good plan for economic growth?" Obama asked the crowd, which screamed back, "No!"