in order to answer you former question about testing language skills before getting permission to entry:
a good point to vote YES for such a kind of test is to restrict the masses who are just looking for doing better in material affairs because often they seem to organize themselves in closed areas
and that’s obvious and clear not a thing to strive for because exchange between the cultures is not only more effective but also
better for social managing.
many children of immigrants are the “black sheep” in advance without commiting any crime, they are suspected to do so just because their language isn’t on one feet-level with the others.
If you are incessantly observated in expectation of commiting something strange then you might start feeling seperated …
but if there’s no power or authority which is interested in getting them involved, f.e. by providing language courses, it’s quite a incomprehensible thing to believe you’re welcome.
so what? sounds like a blind alley?
unfortunatly a lot of western people have stupid opinions, such as “they steal our jobs from us” but don’t understand how important immigrants are just to name an example by paying taxes which again are absolutely necessary to provide medical care for the older ones…