I think a good way to protect Europe would be to advocate the complete assimilation of immigrants, whether naturalised or not.
And it shouldn't matter if they were already citizens, because sometimes you notice that there are new immigrants who are much more assimilated and educated than ones who've been living in Europe for decades, so how many years an immigrant has spent I believe don't matter as much as how he is assimilated into a European country, traditions and culture.
And it shouldn't matter if they were already citizens, because sometimes you notice that there are new immigrants who are much more assimilated and educated than ones who've been living in Europe for decades, so how many years an immigrant has spent I believe don't matter as much as how he is assimilated into a European country, traditions and culture.