Just say the quiet part out loud: caste-based discrimination.
Indians hire their relatives and pals, that’s nothing to be surprised of.
I'm Indian -- I think a lot of this comes from the fact that the Brits left such a horrible legal system behind that it's hard to trust it to resolve disputes well. So people default to family/community trust relations.
I've been lucky to work in high-quality teams where nepotism hasn't been a concern, but I do understand where it's coming from (bad as it is).
...is there a nationality or ethnicity that doesn't?
Uhh yes?
Honestly I find this kind of thinking too narrow. It’s not a Satya problem, nor a Shengjia problem, it’s a systemic problem where people from most regions of the world overtly practice illegal workplace discrimination in the U.S., and the American government at all levels is not equipped to prosecute the malfeasance. Not 1 day ago I completed a systemic bias training module mandated by the State of California to keep current with a professional certification. All of the examples were coded as straight white males doing something bad to another group (“acting cold to people of color”, “preferring not to work with non-native English speakers”, “not promoting women with young children”)