It was high ranked last year, is it still high ranked now?
With the €100k fees for certain visas, with all the news about ICE, with the requirement to have public social media profiles to get in combined with the other news about people getting deported for having politically unacceptable opinions?
Comparison is hard, because states themselves are the size (land and population) as other countries. People that would be counted "immigrants" elsewhere are not.
E.g. Switzerland has an unusually high immigrant population, but also an unusually high emmigrant population.
The U.S. has 52m immigrants and 4.8m emmigrants. [1] Nowhere else is nearly that ratio. Next closest would be Canada.
The US is a top immigrant country because it isn't bombing itself, and there is still the perception that one can go from nothing to something - but that barn door is closing, for sure.
I know what the comments will be.
And the US is one of the top immigrant countries in the world. Always worth reflecting why people choose that when there is greener gras.