Ahead of the pack.
There will always be some government involvement in marriage due to taxation deductions for married individuals, the need to track the welfare of children produced by marriages, insurance benefits extended to married individuals, and judiciary oversight for divorce proceedings. Religious institutions either can not or will not handle all of that.I don't think the government should be all to involved with marriage. This should be an issue left for the church to deal with. But I do believe the covenant of marriage is between one man and one woman.