needed to get a sense a humor about his suggestion that immigrants trying to cross the border should be electrocuted while scaling the border fence.

But at a news confernce with anti-immigration Sheriff Joe Arpaio Monday, Cain said the fence "might be electrified."

"Let me first say, it was a joke and some people don't think it was a good joke," the candidate explained. "And it's probably not a joke you're supposed to make if you're a presidential candidate. I apologize if it offended anyone. Mea Culpa, mia culpa, mia culpa."

"It didn't sound like a joke," one reporter noted.

"You know, I think we're splitting hairs here," Cain replied. "I don't apologize for using a combination of a fence and it might be electrified. I'm not walking away from that. I just don't want to offend anybody."

Arpaio later told reporters that he didn't see what all the fuss was about.

"I have a electric fence around the tent jail," he boasted. "I have illegal immigrants there. I have illegals on the chain gang. Nobody goes after me... I got an electric fence. It doesn't kill people. It shocks you."