A Korean architect might well be allowed to come for meetings or to supervise on a B-1. They might not, depending on what they actually do. The laws are writte

A Korean architect might well be allowed to come for meetings or to supervise on a B-1. They might not, depending on what they actually do. The laws are written out and there's lots of precedent. The point I'm making is if there's 300 people with hard hats and hi-vis vests that say "mechanic" on them (to name one example I saw in a video of the raid) there's a pretty reasonable chance they're very clearly on the wrong side of visa law.