From Think Progress:
CAIN: I just got back from China. Ever heard of the Great Wall of China? It looks pretty sturdy. And that sucker is real high. I think we can build one if we want to! We have put a man on the moon, we can build a fence! Now, my fence might be part Great Wall and part electrical technology…It will be a twenty foot wall, barbed wire, electrified on the top, and on this side of the fence, I’ll have that moat that President Obama talked about. And I would put those alligators in that moat!