Traditionally the to do work trips into the USA for Australia and other USA allies was the ESTA visa waiver that these Koreans were on.
From reading about what happened here it seems the South Koreans were on that visa waiver for their work trips. A lot of people claiming "it doesn't allow you to work" yet the visa waiver has a long long list of various types of work it does allow and it's pretty broad.
So it seems the ESTA isn't worth anything anymore. You can't go to the USA without a very very heavyweight working VISA. Ok. No more trade shows, conferences or general business trips.
> So it seems the ESTA isn't worth anything anymore. You can't go to the USA without a very very heavyweight working VISA.
There really isn’t much between a B-1 and an H1-B, so there isn’t much of a path forward here. That factory isn’t getting built until the USA re-instates previous exceptions.