I write on another platform called NewsBreak and I did a post on Mileva Einstein - it was well received because not many not about her
I'll tell you my thoughts based on my experience in the US - when we first came here on student visas, it was quite the thing - after many years of research, jobs were plentifold for scientists - not anymore
The competition is cut throat with preferences for top tier schools. Some of the immigrant scientists could never find good jobs either in academics or otherwise
Many of them (scientists) especially the females retrained into a diff field - teaching in high schools -