[Baeocystin]

It's been known for a long time that immigrants in the US perform better across most every metric than the native population.

Sometimes this is seen by policy-makers as indicative of a problem with the native population. Sometimes this is cast as immigrants taking over.

The reality is rather straightforward, imo. The type of person willing and able to uproot themselves from their parent culture and set their sails for new opportunity is a huge selection event, in and of itself. It's no wonder that the most driven percentage of humanity turns out to be the most successful.

(This is also why I think the US would only benefit from much less restrictive immigration policy, but that is a discussion for another thread.)