> So what seems to be happening here is that the regime wants to block Microsoft et al for applying for Green Cards for workers currently on H1B visas - not unheard of, but a rarity among the hordes of H1Bs employed yearly by technical firms.

Rarity? This is the standard path to green cards via employment. At my previous company, they did not hire a foreigner with an H1B unless they intended it to sponsor them for a green card (i.e. they started the process of applying for their green card as soon as they legally could after hiring). And they hired lots of H1Bs.

> It also doesn’t address the real grievances around H1Bs themselves, like how it coerces labor into taking more toxic or abusive working environments and lower wages while also robbing domestic workers of opportunities.

For many people, the appeal of an H1B goes away if they don't have a path to permanent residency. I guess some foreigners may do it to claim "US experience", but that's about it.