There are permanent ex-pats, as Arthur C. Clark was in Sri Lanka. ("Clarke, a British expat who made his home in the nearby island nation of Sri Lanka", https:/

There are permanent ex-pats, as Arthur C. Clark was in Sri Lanka. ("Clarke, a British expat who made his home in the nearby island nation of Sri Lanka", https://www.smithsonianmag.com/smithsonian-institution/personal-writings-arthur-c-clarke-reveal-evolution-2001-space-odyssey-180954967/ https://www.smithsonianmag.com/smithsonian-institution/perso... ) Also, seasonal farm workers crossing the US border without legal authorization are not called "illegal ex-pats", even when they have every intent to leave within a few years.