GOP presidential hopeful Herman Cain returned to the set of Fox News Sunday by making a self-effacing remark about his whiffing on a question about foreign policy the last time around on the Sunday morning news show, but ended it with some extremely provocative comments about Islam in the U.S.

Cain reiterated his previously announced opposition to a mosque in Murfreesboro, Tennessee on the program – that comment comes after a previous remark that he would never allow Muslims to serve in his administration.

But just like his lack of knowledge about the Palestinians quest for a right to return to Israel (an issue that has been a part of the Israeli/Palestinian divide since 1948) exposed his ignorance about foreign policy earlier this year on FNS, the former Godfather's pizza CEO seems to be on shaky grounds about the division of church and state in America, saying that his opposition to the mosque is based on his talking to "the people" in Tennessee, as if that should be the deciding factor in such a sensitive situation.

CAIN: One of my guiding principles, Chris, is that if you want to know the solution to the problem or if you want to understand the problem, go to source closest to the problem. I talk to the people in that community.

And here's their problem and I sympathized with them. Our Constitution guarantees separation of church and state. Islam combines church and state. They are using the church part of our First Amendment to infuse their mosque in that community and the people in the community do not like it, they disagree with it.

Sharia law is what they are to infuse in to our —

WALLACE: Wait a minute. Are you saying that we should ban Muslims from worshiping in this country?

This article appears in Jul 14-20, 2011.