Originally it was illegal under British common law before the United States was even a country. It has been prohibited by the hippocratic oath since ancient times.
Nobody ever thought of allowing men into women's bathrooms until early this year. Now you are a bigot if you don't think it is just a wonderful idea.
We are dealing with how to practically battle the Left on the issue, which is to return the issue to the States, where the Right wins.
I think the overwhelming number of Americans are against it, but a vocal minority control the media.
The deconstruction left being led by their lgbt allies are systematically destroying the underpinings of this once great civilization. Liberal have no objective foundation for truth. They will decide whatever the mob wants is true and good. Conservatives have an objective foundation for truth. It is the Scriptures and was given to us by GOD. Our moral code is based on this truth. Our legal system and codes were based on this objective foundation.
Once society embraces everything that Scripture tells us we shouldn't Govt can become our new lord and master.