I'm a drop on the ocean only, but my case is the one I have: PhD in Computer Science, highly specialized and have lived and worked around the world , but there's not enough that attracts me to living in the US.
Its health system issues, the animosity against minorities and immigrants and the lack of reasonable immigration paths for professionals make it unsexy.
And as I said I'm literally nobody. How would the US attract real post Ww2 talent?
> lack of reasonable immigration paths for professionals
getting a visa is the hardest part, but doable if you’re a bit lucky. Once you have the visa, getting permanent residency after a few years and ultimately citizenship is relatively straightforward, IF you’re not from one of a few countries with large numbers of immigrants to the U.S.: mainly Mexico, the Philippines, China and India.
It seems from your profile that you’re Mexican so yeah, getting permanent status in the U.S. would take a really long time even if you got a visa.
This is one of the biggest competitive disadvantages of the U.S. currently: making it unreasonably hard for skilled people to immigrate, compared to places like Canada or Europe. But I think it’s an exaggeration to say there’s no reasonable path.