Absolutely shocking that immigrants from the United States of America to Denmark and the Netherlands might be in a different economic class than those from war-torn, colonized or impoverished nations. It’s almost as if they might have left for different reasons.
Out of curiosity, do these results only concern themselves with first-generation migrants? I’m not sifting through 200 pages to find an answer, but it’s important to distinguish. Countries are aware that taking in low wage earning migrants from developing countries has an initial expense. Those costs are mitigated by the lack of money spent on that migrant’s childhood and by the eventual productivity of their children and future generations.