I am not talking about the United states alone. Also, I am not American, and I do not live there (or have never been anywhere near that continent!)
When I say legal requirements, I am talking about:
- United States (both federal and state level - blue and red states)
- Commonwealth countries (UK, Canada, Australlia, New Zealand - When one does something, the others follow)
- Several Asian countries
- European Union (Both at individual nation levels, and at EU level)
If enough countries do it, the rest will join.