That’s actually not a bad idea.

(ABC News) — Hours before the GOP presidential candidates take to the debate stage tonight in Las Vegas, where border security and immigration are expected to be hot-button issues, former Mexican president Vicente Fox scolded two of them for their “stupid” and “confusing” plans to close the porous border.

“This guy who wants to put electric wire on top of the fence at 20 meters high so the migrants die,” Fox said, referring to Herman Cain’s proposal to build an electric border fence, “is incredible, it’s nonsense.”

Fox said the United States might as “put water with crocodiles” along the border.

Cain tried to play off the comments he made Saturday that the border fence should be “twenty feet high, with barbed wire, electrified. With a sign on the other side that says it can kill you,” by saying Monday that they were just a “joke.”

But at the same news conference, the former Godfather’s Pizza CEO suggested that he did, in fact, support an electric fence.

“I don’t apologize for using a combination of a fence and it might be electrified,” Cain said. “I’m not walking away from that. I just don’t want to offend anybody.”