[fooker]

>H-1B is a work visa, not a student visa.

  H-1B is the primary path for international MS and PhD students to work in the US.

> kind of universities that rely on tuition revenues from foreign students are ones leading the US's tech edge

That's all universities except community colleges.

>he universities that actually matter in this regard will be well-equipped to survive a small setback of less foreign admissions.

Possible, I'd not bet on it. There is a reason the immigration rules are as they are, and are pretty difficult to overhaul.