Romney: ‘Nothing hidden’ in withheld tax returns
Obama holding serve in the upper South
TRENDING: Biden to Romney: ‘Show your papers’
Biden: Romney wants Hispanics ‘to show your papers,’ but 'won't show his'
Rep. Chaffetz: No need for Romney to release more tax records
Romney rips Obama's tax proposal
Biden: 'Mitt Romney wants you to show your papers, but he won't show us his'
Romney calls Obama tax plan a “job killer” (audio)
Obama Trails Romney Again in Battle for Campaign Cash