https://www.forbes.com/sites/stuartanderson/2020/06/11/unemp...
Plenty of education and skill in the USA that doesn't have a fitting job (right now) to put that to use.
Say there are 100000 MBA's but you need someone who knows how to run a kubernetes cluster with a custom syscall shim for a modified kernel and there is someone in Norway who knows how to do that. Even combining all those college graduates combined with all their business education wouldn't be useful for such a role, but that Norwegian person would be. But you still want to stop H-1B?
Also, those mass layoffs you reference are rather recent and doesn't seem to have anything to do with this specific visa system. At the same time, the pool of available people might suddenly exist now, and that means that a company that needs someone with those skills now has a native worker available instead of having to search for people elsewhere. H-1B workers that were laid off have to exit the USA so it's not like they will add to that pool.
That said, it is still possible that those laid off people were selected to let go because their stills aren't as needed as others inside that company (i.e. positions that only exist due to scale). That doesn't mean those people happen to be the ones that you'd need to seek someone else for. Assuming that all tech people have identical skills doesn't help the conversation.
That's always true. You don't need to provide particulars.
If this is objection, why not just raise the minimum salary requirements to 100k instead of banning it? Most Silicon Valley companies would easily meet it.
The difference here is that America has a large 'labour' pool, but the roles you need filled aren't as much just clocking in and out doing some random task, but have requirements that are harder to meet and apparently aren't met by the available Americans. Assuming malice isn't very constructive and to do something about it that actually helps anything needs some backing information.
The other way around: most people don't really want to work in the USA and will only go if the money is right. This also means that the company in the USA that is trying to find someone to fill a gap in their needs might have to spend twice as much getting their problem solved. At the same time, the amount of Americans asked to work outside of the USA is rather low as there aren't that many special skilled people that aren't already available. If you check out the sources listed at the WikiPedia page at https://en.wikipedia.org/wiki/American_diaspora you'll find that a lot of emigration happens for other reasons, and only a small part is related to special skills needed in emerging markets (which are markets that need a lot of skilled people but are not very attractive to a lot of people due to cultural differences or stability worries).