Mr. Emanuel suggested that the undisclosed returns could hold only bad news about Mr. Romney’s finances, and might even have played a role in Senator John McCain’s decision to reject Mr. Romney as a running mate in 2008 and turn instead to Sarah Palin. Mr. Romney gave Mr. McCain’s team 23 years of returns.
“The Romney campaign isn’t stupid,” Mr. Emanuel said. “They have decided that it’s better to get attacked on a lack of transparency, lack of accountability to the American people, versus telling you what’s in those taxes.”