It's a bit more complicated than that. They all had valid (at the time) visas, but some may have been in violation of the requirements. South Korean companies couldn't get H1-B visas so they instead used VWP or B1/B2 visas meant for tourism and short-term business (conferences, negotiation, etc.). These visas don't allow certain kinds of work, so it depends what they were actually doing at the plant. From the article it sounds like that ICE agent thinks at least that one worker wasn't doing any proscribed work. In a sane world, an immigration court would look at the evidence and decide if the visa requirements had been violated. But instead we're just summarily deporting people.

https://www.reuters.com/business/world-at-work/workers-say-k...

Do we know WHO ordered this ICE hit?

Because this is a clown show of Epic proportions. Those guys were there to set up a factory for MAGA people to work at.

This stunt has ignorance and stupidity stamped all over it.

very likely all of them