Why is that "undeniable"? I'd take it that the lesson here is that majorities shape minorities - so, assuming natives sufficiently out number immigrants (a reasonable assumption, usually) they should have positive peer effects. Problems that occur with this aren't due to immigration per se, but to segregation and homophilic settling choices.
The only situation where they could actually drag down native populations would be under conditions of majority immigrant populations outnumbering native populations with superior cultural capital. Usually, when immigrant populations do concentrate in certain locations, it isn't in areas that already posses significant cultural capital, it's in poor regions.
The immigrants aren't overwhelming rich silicon valley suburbs, they are overwhelming poor agricultural counties in the middle of nowhere.
Why is that "undeniable"? I'd take it that the lesson here is that majorities shape minorities - so, assuming natives sufficiently out number immigrants (a reasonable assumption, usually) they should have positive peer effects. Problems that occur with this aren't due to immigration per se, but to segregation and homophilic settling choices.
The only situation where they could actually drag down native populations would be under conditions of majority immigrant populations outnumbering native populations with superior cultural capital. Usually, when immigrant populations do concentrate in certain locations, it isn't in areas that already posses significant cultural capital, it's in poor regions.
The immigrants aren't overwhelming rich silicon valley suburbs, they are overwhelming poor agricultural counties in the middle of nowhere.