Ive usually seen “Expat” defined as someone working in another country, but explicitly with the intent to be there temporarily and leave once their time at that job ends, rather than moving there with an intent to stay and join that society. Which, granted, doesnt seem to be what OP is actually talking about in this case.
I used to see them every so often on people in stores and such when I lived in NC, I moved to MA sometime around the covid lockdowns and havent seen one in person since, though Ive encountered people that like Trump vocally enough that Id not be that surprised to see one.