Cruz said. "I think the term 'shutdown' is a misnomer. It's actually a partial, temporary shutdown. We have seen them before."
Cruz argued that Saturday and Sunday are kind of like government shutdowns.
But it is Romney, who has acknowledged that he's probably the last person Republicans are now looking to for advice, who gave the most earnest argument on Tuesday against shutting down the government.
"I badly want Obamacare to go away, and stripping it of funds has appeal. But we need to exercise great care about any talk of shutting down government," said Romney, according to a prepared text of his remarks at the private fundraiser. "What would come next ... what would come next when soldiers aren't paid, when seniors fear for their Medicare and Social Security, and when the FBI is off duty? I'm afraid that in the final analysis, Obamacare would get its funding, our party would suffer in the next elections, and the people of the nation would not be happy."
A spokesman for Cruz, responded to Romney on Wednesday, arguing that Americans see Obamacare as "train wreck."
"They expect their elected representatives to fight to undo it," said Cruz spokesman Sean Ruston. "If Republicans stand up for principle, we can win this debate."