Actually, the Constitution already fits the Bible, since it was written to reflect the Biblical values of individualism and the governments role in protecting the individual.
The role of any government offical is simply to follow the Consitution and that is what he takes an oath to do.
Huckabee’s problem with conservatives is that he is another federal interventionist like Harriet Miers, whom President Bush tried and failed to put on the Supreme Court a few years ago.
A strict constructionist view would have issues like abortion dealt with by the states.
Huckabee likes a federal solution to abortion, even a constitutional amendment.
The same for marriage as well.
That puts him in hot water with conservatives just like Miers was in a few years back when the president backed away from her nomination.