I wonder why the Russian-American population is so low despite being the largest European country. Then there’s also Norway and Sweden, they punch way above their weight, I assume that’s somewhat due to the quotas from the 20s to the 60s but it also make me think of Svidrigailov in Crime and Punishment “I’m going to America” and all that
That could also just be because Scandinavian immigrants moved to big, rural places in the midwest where having huge families was the norm.
It was very, very difficult for Russians to immigrate to the US during the Soviet period, which decreased their presence in the country. Many Russian immigrants also settled in big cities like NYC, and probably had less children. Not to mention a large number of those Russian immigrants were Jews, who likely don't identify themselves as Russian.