Marriage is the union of one man and one woman, for the purpose of creating, nurturing, and preserving a family. The State has an interest in this institution as the fundamental building block of the society, where new humans are brought into existence and provided with genetic and material inheritances that give continuity to the family and the culture.
The Supreme Court erred when they took the unauthorized power to redefine marriage to include relationships that are not marital. Their jurisdiction does not extend to changing the meaning of words, and “marriage” is a word with a fixed definition. Redefinition is actually destruction, and the states are under no obligation to bend to this unauthorized attempt to exercise power. The “supremacy clause” of the U.S. Constitution only applies to acts of Congress that exercise listed powers – this was not one of them.