[rayiner]

I think immigration has had a huge influence on those countries. It comes down to trust. The liberal policies of the Scandinavian countries work to the extent that people trust each other. And people don't and can't trust unassimilated immigrants in the same way they can trust people who are similar to themselves.

[hkmurakami]

Sounds logical that you'll get a major cultural clash when you insert people who have had to "gouge the system" and live every man for himself in their native land into a society where "helping one another" and giving for the communal good from which everyone benefits. (ex: high taxes in Scandanavian countries and great public infrastructure w.r.t. health, education, etc.)