Mike Huckabee? What's Wrong with Him?

Gail Collins writes:

Like Bill Clinton, Huckabee was born in a town called Hope and became a pretty good governor of a state that doesn’t make it all that easy. (Plus, you have to love the fact that he lived for a while in a mobile home on the Arkansas Statehouse grounds.) He’s extremely inclusive, defending minorities who are illegal immigrants as well as the ones registered to vote. He can be both funny and convincing on the stump.

On the downside, I think he’d be a terrible president. He doesn’t know beans about foreign affairs, he wants to replace the income tax with a national sales tax, and his positions on social issues are far to the right of the general populace. But why aren’t the social conservatives rallying around this guy?