It really isn’t hard to move those tech jobs abroad and then have Americans go to India or China instead on working visas (eg a Chinese Z visa I had for 9 years). The USA is maintaining some kind of balance with their H1 program: enough to encourage keeping those jobs in the USA, but not enough to be a free for all for immigration. It isn’t doing really good at that, but an overly punitive H1B program will simply cause those jobs to switch to other countries.