Related to immigration and trying to conquer entrenched poverty:
https://www.nytimes.com/2018/10/01/u...d-poverty.html
It includes a map of how economically successful people are who grew up in any given neighborhood in the US.
Seattle is going to implement a housing voucher program, similar to what Canada has done, to try and give better futures to kids whose neighborhoods of upbringing put them at a disadvantage. (Canada, interestingly, has as much legal immigration as the US, despite being 1/10th the population.)
I can see LA's point about the risk of losing culture... but my question is exactly what *is* the common American culture? We've always been a melting pot, with earlier generations' intermixing being now passe, such as my co-worker from New Jersey who is Irish-Italian, two previous immigrant waves pitted against each other.
I think the bigger threat is the different nations within the US - going back to the map of the distinct regional cultures - overcoming the national cohesion that keeps the country together. Tribalism - political, ethnic, economic, religious - is a much bigger threat, IMO.