Mainly because the law is working as intended. Also because you would have to define what “their own country” is. Think of DACA recipients, who in many cases don’t even speak the language of the place where they were born, have no cultural or family connections back there, is that “their own country” if the are more USian than anything? What tablet the opposite? naturalized Citizens who very much retain the cultural and heritage connections, at times even creating separate cultural enclaves.

It is almost as if “your own country” is a made up racist concept that gets wielded by power structures to keep people at each other’s throats.