What are the reasons to assume it won't? Keep in mind that a lot of these first world countries have an aging population - so younger people being imported is

What are the reasons to assume it won't? Keep in mind that a lot of these first world countries have an aging population - so younger people being imported is good because it brings in more taxpayers versus pensioners. See this bloomberg article for some of the problems particularly immigrant-shy countries face: https://www.bloomberg.com/news/articles/2017-02-23/why-immigrant-shy-japan-is-luring-foreign-workers-quicktake-q-a https://www.bloomberg.com/news/articles/2017-02-23/why-immig... The article itself also addresses some of these points: >Sweden has had one of the highest rates of growth in Europe over the last two years. Youth unemployment has declined considerably and is now at its lowest level for 13 years, and long-term unemployment (12 months or longer) is the lowest in the EU. Compare this with Japan: http://nationalinterest.org/feature/what-ails-japans-economy-16003 http://nationalinterest.org/feature/what-ails-japans-economy...