Well now, Icarus, no one's saying that they can't speak English
at all. I don't think there's any evidence for that, at least for voluntary immigrants seeking better jobs and money. It would also be a gross generalisation if we were to fu
ck
all immigrants when many can speak better English than most ‘natives’. Your own level of English proficiency (e.g. spelling, grammar, register) makes me wonder what you do consider acceptible.
Then there are those who are seeking asylum because of political disputes. My expertise on the subject will forever be jelly-like and poor, but it seems to me it's those who most desperately need our humanitarian support that are entering most illegally.