In the Thursday meeting in which President Trump complained about "having all these people from shithole countries come here" — and singled out Haiti, El Salvador and Africa as examples — he also added that, "we should have more people from Norway."
In fact there was a time when we did.
From 1870 to 1910 a quarter of Norway's working-age population emigrated, mostly to the United States. You read that right — one-fourth of its workers left the country.
Back then Norway was quite poor. Wages were less than a third of what they were in the United States. And the wave of emigration out of the country quickly benefited those who remained. That's because it reduced the supply of workers in Norway, so those left behind could demand higher wages. And this helped narrow Norway's wage gap with the U.S. by 25 percent over that same 40-year period, putting Norway on the path toward its status today as one of world's most prosperous nations.
Those are the findings of a paper published in European Review of Economic Historyback in 1997 by two economists. It's considered a seminal work because the authors — Alan Taylor of the University of California Davis and Jeffrey Williamson — then of Harvard University, now professor emeritus at the University of Wisconsin, Madison — combed through paper archives to piece together the first truly comprehensive picture of wage differentials across European countries and the United States during that time.