Europe, Japan And Immigration

Relative proportions of immigrants from Northw...
Relative proportions of immigrants from Northwestern Europe (red) and Southern and Eastern Europe (blue) in the decades before and after the immigration restriction legislation. (Photo credit: Wikipedia)
I think one big reason Japan has been in the doldrums for decades now, and why Europe continues to be in a funk is that both are kind of hostile to immigration. And so you end up with skewed demographics, and you hurt the economy.

For its entire history, immigration has been America's number one strength. The president's recent positive step aside, Washington DC's hostility towards immigrants is a resolve to take America down the Japanese/European path.