Huckabee wants to change the US constitutionThat makes sense. If one truly believes that one's particular deity desires a particular world order, then there's no choice but to enforce that order.
...but I believe it’s a lot easier to change the Constitution than it would be to change the word of the living god. And that’s what we need to do — to amend the Constitution so it’s in God’s standards rather than try to change God’s standards so it lines up with some contemporary view....
Jimmy Carter, who was and is deeply religious, believed that his deity didn't want to work that way, so he left the constitution alone.
George Bush is probably confused, some days thinking one way of his deity, and other days thinking another way. Introspection is not his strength.
Huckabee is not confused, he's a warm and fuzzy hard core fundamentalist theocrat.