I had two different scenarios in mind: one happened to an acquaintance, where they negotiated a pay cut (because presumably the company doesn't want to pay Bay

I had two different scenarios in mind: one happened to an acquaintance, where they negotiated a pay cut (because presumably the company doesn't want to pay Bay Area salary to a remote worker in a location in an area w/ lower salary base), and there was the question of taxes involving part of the year in one state and part in another (plus the math for RSUs and options, of which the person had vested both in both states). The other scenario involves visa workers. The I-140 is predicated on not being able to find local candidates that match a criteria. More broadly, the H1-B visa grant pertains to foreigners being able to work in the US at all in the first place. I'd imagine that if you had everything setup to be remote from the beginning it'd probably be fine to keep things humming along, but I imagine that switching surely must pose some sort of logistic challenge?