Accessibility needs to be universal. There may not be other signs like that in a particular city or country, but the rest of the world uses a line through “do not” signs.
Even a child could understand what it means, compared to different random coloured edge markings. And that’s exactly the point.
They are basically at the whim of how trump is feeling from one day to the next.
Isn’t it easier for American businesses to push back, rather than go through all this effort and still be at risk of being in the exact same position at a moments notice?