Candidates trade barbs on taxes
TRENDING: Biden to Romney: ‘Show your papers’
Romney: ‘Nothing hidden’ in withheld tax returns
Biden: Romney wants Hispanics ‘to show your papers,’ but 'won't show his'
Biden: 'Mitt Romney wants you to show your papers, but he won't show us his'
Eric Holder revs up NAACP meeting
Repealing health law would mean more benefits for members of Congress
Report: 83 percent of doctors have considered quitting over Obamacare