Check this:
But in the end, wouldn’t it be better if religious vendors were able to set aside their personal beliefs for the sake of civility and friendship? I mean, there is no prohibition that I am aware of in orthodox Judaism that would prevent a photographer from working a gay wedding. There is no problem for a tailor to hem a gown or cuff some pants for a gay wedding either. So I guess what I am saying is that while I respect religious beliefs very much, I don’t believe that one’s religious beliefs are sufficient cause to discriminate. To be clear, I am not talking about a member of the clergy performing a ceremony that does not even exist in his or her religion. I am referring to vendors who are uncomfortable working a gay ceremony. There is a difference. I don’t think anyone would expect a member of the clergy be required to perform a nonexistent ceremony. But there is no direct parallel to religious vendors.