Just to add one more point that makes the US attractive to global talent: citizenship. In particular: 1) citizenship at birth and 2) viable path to citizenship via green card.
Of course, both of these are in the crosshairs for “revision”.
It's much easier to get citizenship almost anywhere else in the world than to get it in the USA by green card.
It's much easier to get citizenship almost anywhere else in the world than to get it in the USA by green card.