Interesting. I have worked with many H1B visa recipients. They are hard workers but mostly not geniuses. You see, knowledge workers tend to know their rights and can be rather intractable when you demand 50+ hours of work per week. I was once told this was standard for IT. Now if you are threatened with firing AND deportation you are much much more compliant. It’s simple as that. US gov assisting in “labor arbitrage". One might also make the point we gave away our IP to Huawei and other Asian companies through this program not because they were thieves.