Is it the "right stuff"? One might just as plausibly expect such people to be highly risk tolerant and to end up screwing up really badly as often as they succeed.
~20% of the world population of foreign-born people lives in the US. It's difficult to think that's unrelated to the fact that the US produces a disproportionate amount of global innovation.
> Immigrants are 4 times more likely than children of native-born parents to have less than a high school degree, but are almost twice as likely to have a doctorate.
> Immigrants are much more likely than others to work in construction or service occupations, but children of immigrants work in roughly the same occupations as the children of natives.
I do think you have a valid question and shouldn't have been down-voted