My son is the assistant pastor at a small, non-denominational, evangelical church and they are VERY concerned about this. They know in this day and age that they could lose a court case and be forced to perform such weddings.
Every church in the US will be forced to perform “gay marriages” or lose tax exempt status. They will argue it’s analogous to interracial marriage and if it’s a legal marriage denying it is illegal.
They’ll also try to make any questioning any of the homosexual “hate speech.”. Someone in Canada has already been convicted of quoting the Bible on the topic as a human rights violation.
And effectively be compelled to recognize "gay" as a protected class. The subsequent step will be when a gay preacher/pastor/minister/teacher is denied a position at a school or (gulp) a church. The next thing you see is a preacher at the pulpit sporting a moustache and a dress. Churches will be ripped apart.