Comment by tjwebbnorfolk

Also looking a bit more at the GSMI: a lot of those criteria are based on current social welfare benefits received by the population. Many of which programs are not sustainable in the long run.

Of course the US has less of a social safety net than Norway, a petrostate with trillions of dollars in a national oil endowment, and ~half of their GDP is from fossil fuels. I don't know that I'd want to move to Norway for the kind of "social mobility" that I'm after.