I have experience with this issue; I worked at JPMC IT as a manager a while back, and we had many H-1B visa employees.
Why? Because we couldn't find a qualified American, or at least not at the level we needed to run operations. Our universities cover technology courses, but more for future managers than for the jobs H-1B visa holders fill. While it is great to get a well-rounded learning experience, it doesn’t fit the needs of the jobs on the market.
In some foreign countries outside the EU, they train in specifics: how to be a DBA, UNIX Admin, Network Architect, Security Control, and many other roles where our higher education falls short. The H1B holders learn those skills in less than a year, without all the liberal arts and DEI classes our universities force on students. If we dropped these requirements and replaced them with a focus on hands-on technology learning, our students would get hired.
It is time to realize students don’t need four years of brainwashing, and to remove those unnecessary classes. Degrees would then take two years, but of course the Universities would fight tooth and nail against it. Why? Because what will they do with all the liberal arts professors, making up subjects to teach and pushing them down to our K-12? It’s job security that doesn’t exist in many countries.
Times are changing; the trades are coming back, and if we add technology to the trades, we'll have people to fill the jobs H-1B visa holders hold. But our Universities will most likely fight the move because it would take from them. All IMO.
