Re these "political refugees" one wonders as to whether it turns out that their immigration turns out to be something akin to that "revolving door".
Another question to consider, the status of minor children. These kids were born in the U.S., and as such are citizens. Have they "immigrated" in the sense of giving up their U.S. Citizenship, by the way, did their parents so do, or were they, as minor children, merely dragged off by "responsible adults"?
In any event, what is the status of their citizenship, assuming that they have not given up their status as U.S. citizens. I've traveled, and lived abroad, even worked in foreign countries. I did not however, give up U.S. citizenship.