This is all on top of an already significant immigrant population - in Germany alone there are 19.3 million people with immigrant background: https://www.dw.com/en/german-population-with-immigrant-backg...
Your second comment on Germany is totally irrelevant.
And 1 million people for Europe is nothing considering the total population and wealth of the union. As I write in the comment you ignored: some of the poorest and smallest countries in the world took in more than a million refugees and without help.
And it's 1 million in one year, but 5 million since 2008. Unlike with Colombia, almost none are from neighboring countries. That's counting only refugees, not total immigrants: https://en.wikipedia.org/wiki/European_migrant_crisis#Asylum...
Given these numbers, is there any amount of immigrants the EU/US would have to accept, to be considered sufficient?
There's no point in continuing this exchange.