Romney attacks Biden with 'buried' for four years comment

Biden made the comment while making the case to a crowd in North Carolina that Republicans would raise taxes on the middle class.

"This is deadly earnest, man. This is deadly earnest," Biden said earlier on Tuesday. "How they can justify, how they can justify raising taxes on the middle class that has been buried the last four years? How in lord's name can they justify raising their taxes with these tax cuts?"