Obama campaign senior adviser Robert Gibbs on Sunday defended Senate Majority Leader Harry Reid (D-NV) for repeatedly claiming -- without evidence -- that Mitt Romney hasn't paid taxes for 10 years.
"We don't know that" Romney didn't do anything wrong, Gibbs said on CNN's "State of the Union." "We do know that the one tax return that he did put out -- we found out that he had a Swiss bank account that was not on his financial disclosure. We do know that he has used not releasing his tax returns to hide where his money is."
"It's a time honored tradition that presidential candidates release their tax returns," he added.
Gibbs dodged several questions about whether the Obama campaign would ask Reid to stop making the claims. He instead insisted that Romney must be hiding something by refusing to release additional returns.
"Have you ever seen anybody go to such great lengths to not put something out? And when you generally don't put something out, isn't it because you're generally hiding something?" he said.