You really don't think the US has a weaker social safety net and less solidarity than Europe? And the issue isn't necessarily immigration per se as ethnic frac

You really don't think the US has a weaker social safety net and less solidarity than Europe? And the issue isn't necessarily immigration per se as ethnic fractionalization. E.g. if a ton of French expats were to immigrate to France that would create different levels of social strife than, say, a ton of Russians entering France. There have been many studies on this, e.g. https://www.jstor.org/stable/2586963?seq=1 https://www.jstor.org/stable/2586963?seq=1 https://www.nber.org/papers/w20504 https://www.nber.org/papers/w20504 http://nrs.harvard.edu/urn-3:HUL.InstRepos:4551797 http://nrs.harvard.edu/urn-3:HUL.InstRepos:4551797 https://www.cgdev.org/sites/default/files/archive/doc/events/EthnicPublicGoods.pdf https://www.cgdev.org/sites/default/files/archive/doc/events...