The highly-publicized gay wedding cake cases all were decided in state courts, in states which had civil rights laws making sexual orientation a protected class.
True. And that lobby is obviously hoping this spreads and becomes "law of the land." Here is an interesting read about sexual orientation not being "law" and the supreme court so far refusing to rule on it as a protected class. With split lower courts, it is expected the SC will eventually take it up. Hopefully, the court will find that if the will of the people is such, law will be enacted adding it to the civil rights amendment, rather than the court deciding the issue. (wishful thinking I know) Most of us in a corporate environment know that business has adopted it as policy just to stay out of trouble. Here's the link to the article...
https://www.usatoday.com/story/news/politics/2017/12/11/supreme-court-wont-hear-lgbt-job-discrimination-case/940028001/