There is a guy named Oscar who left after getting a degree and starting a family, so obviously had the ten year ban, but they allowed him back in promptly and he is in the army now. Senator Durbin talks about him. So going back isn't always a terrible thing to do. Don't forget the world is bigger than the U.S. so if it doesn't work out try to migrate elsewhere, I hear Australia is nice. I agree with everything beowulf said.