“USian” could apply to Mexico as they’re the United States, too, and since they’re in America they could also be “USofAians”.
That's a stretch, the country they live in is United Mexican States which doesn't abbreviate to USofA.
Mexico in short doesn't have the ambiguity of America.
That's a stretch, the country they live in is United Mexican States which doesn't abbreviate to USofA.
Mexico in short doesn't have the ambiguity of America.