Enforcement

[ReineD]

What if someone goes into a restroom in one of these states where they have this law and someone in there thinks they were born the opposite gender.

Actually Sarah Beth, this has happened. I can't remember which state it was in, but a masculine looking woman was harassed for using the women's bathroom. Maybe someone else will remember the story and provide a link. I can't remember if law enforcement was called.

But I dare say that that people are falsely arrested occasionally, for all kinds of reasons not just gender-bathroom related. It does happen but for the most part, it doesn't.