They should be called United Statesians in English. I know États-Uniens is the official name in French.
What is it in other langages? How can we promote such use?
Why am I asking? The US administration is currently a disgrace on the world stage, and I am thinking how it unjustly hurts people from the rest of the American continent.
Don’t fix things that aren’t broken. There are plenty of broken things to actually work on instead.