I have worked with software people on H1B visas who's #1 goal was to hire more [specific nationality] and thin out the rest. Their work ethic was a top-down rule by fear, and their code was VERY bad. Made my life straight up worse. One example of abusing the H1B visa system.

I have also worked with amazing H1B visa people.

Just make sure they're actually talented.

Funny you're in so much fear of repercussions that you don't even dare to say which nationality and yet most people in tech know which one you meant