Immigration in the US

Can anyone supply a statistic/ article of immigration in the US with increased socialism/fascism/etc vs a a more free market oriented economy in periods of its history? I suppose it doesn’t have to be the US, any country would work.

I’d say the most salient examples in the US would be the Frankfurt School and the labor movement. and consequently, the Northeast and the Rust Belt have the highest rates of taxation and pro-union laws in the US. Majority-minority California is another good example.