Reporter:
"Was there ever any year where you paid lower than the 13.9%?"
Mitt Romney:
"I haven't calculated that. I'm happy to go back and look."
Voiceover:
"Did Romney pay 10% in taxes? 5%? Zero? We don't know."
"But we do know that Romney personally approved over $70 million in fictional losses to the IRS as part of the notorious Son of Boss tax scandal. One of the largest tax avoidance schemes in history."