If we double the number of H-1B visas my prediction is you are going to see a drop off in US STEM students who will see the drop in salaries and less stability as a reason to do something else. This means even the NNSA labs are going to need a lot more H-1B visas for any kind of technical work.
To be honest I suspect a number of managers are kinda of hoping this happens. There is a big push for AI at the NNSA labs. If you listen closely to what they are saying it sounds like they hope AI could replace the scientists, so we could have managers and AI only, and maybe a few H-1B guys for guards and clean up. Looks like a bright future.
I am of course not being entirely serious however, there could some real consequences to DOGE, and mass increase in H-1B visas for STEM in the US.