What do Christians against state recognition of same-sex marriage think of the fourteenth amendment in US law?

From what I understand, the fourteenth amendment in American law is interpreted by the SCOTUS to be implying that bans on same-sex marriage are unconstitutional. To me, this means, from the perspective of Christians who are against states allowing same-sex marriage, one of two things is true: 1. the fourteenth amendment is an immoral law 2. the fourteenth amendment is a moral law interpreted incorrectly Is this right? If so, is there a general consensus among Christians against states allowing same-sex marriage between which of the two is right? If there is, which? If there is none, you can go ahead and close this question. If not, why? To be clear, I assume that one cannot believe in the following things simultaneously: 1. being against states allowing same-sex marriage 2. agreeing with the fourteenth amendment 3. agreeing with the SCOTUS' interpretation of the fourteenth amendment