"I'm not supposed to know anything about foreign policy," said Republican presidential hopeful Herman Cain the other day after fumbling a question about President Obama's actions in Libya. "Because you run for president [people say] you need to have the answer. No, you don't! No, you don't!" His dearth of knowledge and interest in foreign policy was on full display in last night's GOP debate.... ...On the Patriot Act, Mr. Cain was even more hazy. "If there are some areas of the Patriot Act that we need to refine, I'm all for that. But I do not believe we ought...