Earlier quoted context omitted.
Or imagine if an employee works for you and this happens to them.
I've had a couple of reports that this applied to. It's incredibly disruptive. "I've got to fly back to India to renew my visa." "Okay, when will you be back?" "I have no idea, it depends when I can get an appointment. It could be next week, it might be in a month." "[State department] We're pausing all visa appointments." "Well fuck." Meanwhile I've got a tech lead who is 12 hours away from the rest of the team. He…
The main constraint is re-entry into the US and being able to travel outside the US. If one stayed here, there was no problem switching schools, programs, jobs, adjusting status to permanent residency or naturalization. On the other hand, for re-entry, one needs a valid visa stamped on a passport which necessitated a trip to one's home country. This stamping visit could be unpredictable.
Ideally, one would like to travel freely to see family and friends but I see a lot of comments implying that one is forced to leave. It might be true now but a lot of comments here are conflating several issues together.