In watching the video, I did not hear what part of the Constitution Huckabee would consider to be out of sync with Christianity or the word of God.
I do understand, forcing people to pay a tax to finance schemes and projects with which they disagree (abortion, welfare for foriegn dictators etc, etc.) to be out of step with Christianity and the word of God. But according to his record as Gov. of Arkansas he would disagree with that position. So, in my opinion he is not credible to make such a determination. Especially since he has been ordained as a Baptist minister.