It's going off-topic now for the thread, but since you mentioned it: Some European countries do just that.
https://www.dw.com/en/over-100-islamic-state-fighters-return...
> Authorities believe that 1,060 IS fighters left Germany for Syria or Iraq, of which a third have since returned, the Interior Ministry said. Germany is taking a "holistic approach" in dealing with ex-jihadi fighters, including deradicalization and reintegration.
https://www.bbc.com/news/world-europe-55387991
> Germany and Finland have repatriated five women and 18 children from Syrian camps housing suspected family members of Islamic State (IS) militants.
.
Incidentally, on the thread topic, I too turned my back on the US and returned to Germany in 2004 after about 8 years and with no visa or job trouble and a good outlook. Back to Germany, in my case, and also after thinking about the bigger picture. I'm a co-founder of a small software company here now. Healthcare, politics (so divisive, and divided, here in Germany it's so much more mild except for the far-right Russia-friendly AfD party), housing costs. Well, the latter is really bad now in Germany too but the rest remains good.
It will teach you a practical lesson in natural identity. Do make sure to go to a nation that you think is the greatest nation in human lifetime.
It behooves us to call out shitty stuff just as it behooves us to work towards bettering our surroundings in increasingly larger circles.