You don't think so? There are states in which Judges are nullifying the votes to limit marriage to one man and one woman. It WILL be taken to the Supremes. Anyone wanna risk that?
That is incorrect. No federal court case has invalidated a state law limiting marriage to heterosexuals. The law struck down in Nebraska which included marriage, was struck down for the remainder of the law prohibiting unspecified associations and as such violated the 1st and 14th Amendments of the Constitution. Every federal judge has recognized that a state has a compelling interests in promoting procreation, and therefore may discriminate in the area of "marriage".