Spencer says that Chaffetz won't get an apology.

Chaffetz said Spencer had stated that Chaffetz wanted to lock people up in razor-wire ringed tent cities because of their ethnicity.

"You owe me an apology, because I've never said that and it's wrong," Chaffetz said speaking in the first debate between the two. "Your characterization of my position on enforcing the law is wrong."

Spencer said last month that it was "sacrilegious" for Chaffetz to "claim to be a believer of God and put someone in a tent city because of their ethnic persuasion."

Spencer didn't respond to Chaffetz demand during the debate, but said afterward that he "shouldn't hold his breath."

Chaffetz is proposing the use of tent-style prison camps as part of his immigration plan, but insists nobody would be singled out based on ethnicity.

The camps would first be used to imprison criminal aliens he says they would be cheaper than brick-and-mortar prisons. But they would also be used to detain undocumented immigrants awaiting deportation if they refuse to return home voluntarily.

Chaffetz says that, if the process for approving legal immigration is improved and incentives for undocumented immigrants to stay in this country removed, those immigrants would return home and get in line to come here legally.

Chaffetz is standing by his plan, even though he was scolded last week by California Rep. Mike Honda, who was imprisoned as a child in a Japanese internment camp in Colorado during World War II.

Honda had called Chaffetz's plan an "odious reminder" of that dark period in history, and Chaffetz demanded an apology from Honda, which he also didn't get.

"The only apology that should be made is by Mr. Chaffetz to the American public for injecting extremism into a sensitive and serious debate on immigration," Honda said.

Spencer said his first priority when it comes to immigration is securing U.S. borders.

"We have a right to know who is in this country," he said. "It's not a good situation for the undocumented workers, either. They are being taken advantage of. We need to punish people who take advantage of them."

The two candidates also disagreed on whether to drill in the Arctic National Wildlife Refuge. Chaffetz, who took a trip to the refuge earlier this year, said drilling needs to start there today to help keep gas prices down.

Spencer said the oil would likely end up going to China or Japan and do nothing to help American consumers.