US is way more welcoming to immigrants. I it's impossible to survive in EU as an illegal alien.
All combined USA isn't as welcoming for higher skilled individuals from India and China vs other developed countries.
This fear isn't entirely misplaced, IMO, considering the US history with the natives who lived here thousands of years before European migrants arrived.
https://www.cato.org/policy-analysis/brief-history-us-immigr...
That said, I don't think the current US system is sustainable or even coherent. Hopefully it can be improved to minimize harm for all involved.