The use of the term "expat" rather than "immigrant" is interesting. I read a piece in the guardian the other day which framed that distinction in terms of white vs non-white ( http://www.theguardian.com/global-development-professionals-... ), but it's obviously a bit more complicated than that. I don't think the two terms are synonyms, but they are very close, and once you try to pick apart the differences, I think t…
That said, "expat" is the wrong term for someone who renounced his original citizenship. I guess they should be called "pats" now.