I think the issue could also be this: - Tech or engineering company hires foreign resident engineer. - That engineer works their way up in the company to a po

I think the issue could also be this: - Tech or engineering company hires foreign resident engineer. - That engineer works their way up in the company to a position where they are in control of hiring. - They hire more people like them. We used to accuse start-ups for hiring for cultural fit (people like them) which looked like sexism and ageism. Same thing, different group.