There should be little surprise: Huckabee said roughly the same thing months ago at the Value Voters summit.
When I hear people say, "Oh, we don't want to change the Constitution, we don't want to amend it," well it was meant to be amended. But let me give you another thought. I'm very tired of hearing people who are unwilling to change the Constitution, but seem more than willing to change the holy word of God as it relates to the definition of marriage.... We do not have the right to move the standards of God to meet new cultural norms. We need to move the cultural norms to meet God's standards.