What is the nation doing about it though? People that go to ivy league schools (and even not so elite schools) mostly are only able to afford it because they themselves have the financial means, whereas in many countries, top education is 100% government-subsidized.

Also, consider this: there's a thing called a PERM application, which involves advertising for a position for 6 months. The reality is that people getting green cards via H1B sponsorships do so after companies literally spend half a year looking for local talent, and at signicant cost (a I-140 application w/ premium processing costs the company $1400 and that's only one step in the green card process, and that's without counting lawyer fees.)

When high tech companies hire foreigners, it's not for lack of trying to find native talent