His business acumen, his conservative credentials and his plainspokenness drove his popularity up quickly. But as with many politicians on both sides of the aisle, the more the public sees of him, the less appetizing he becomes. He has repeatedly revealed his lack of understanding of key issues. CNN's Wolf Blitzer asked Cain if he could imagine as president giving in to an al-Qaida demand to free all of the hundreds of terrorist suspects at Guantanamo Bay in exchange for freeing one American soldier. "I could see myself authorizing that kind of transfer, but what I would do is, I...