It seems that WHERE the illegal aliens come from plays a role in where there is a net benefit. Take a look at this chart in which Denmark and the Netherlands economies were studied:
My quick take is that those from more Western societies are a net plus compared to those from Africa and the Middle East.
I’m also skeptical about the “North America” plotting at the top right. Why wouldn’t Canada, the US, and Mexico be broken out? While it would have been nice to see, it does show that folks “from around “he-ah” are far more productive and should be more sought out than others.
As one of the comments stated:
It turns out civilization matters.
Indeed, it does. And you could add “Culture” as well. Frankly, there are cultures that are certainly, in the whole, that are not congruent with Western ideals.