Factcheck.org said determined had "thinly supported" claims about Romney outsourcing jobs while he was running Bain Capital.

"But why not release the tax returns?" MSNBC host Mika Brzezinski interrupted.

"Can we call a spade [a spade]?" Senor objected. "Talking about wanting to change the subject, this wave of attacks against Mitt Romney is a distraction from the real discussion, which is we're in a jobs crisis and we're not talking about jobs."

"Dan, release the tax returns," Gibbs pressed. "Put all this to rest. If Mitt Romney's not hiding something in Bermuda and Switzerland and the Caymans, it'll be in the tax returns. Why not simply do it?"

"It sounds like no one -- including you -- are not suggesting based on what he's released in those accounts, he has not paid his taxes fully, he's not paid the taxes that he's owed," Senor replied.

"Why does he have these corporations?" Gibbs continued. "Dan, do you have secret Cayman account? Do you have a company in Bermuda? Do you have a Swiss bank account?"

"This is a distraction from the real issue!" Senor insisted.

"Eventually Dan will answer the question," Gibbs quipped. "It will probably be in reruns."