But what is "construction"? If it means "building walls", sure.

But what about assembling and installing the battery presses? Or maybe setting up the electrical connections for them?

It is a genuinely ambiguous area, and I won't be surprised if Korean companies tried to push it a bit too far. This still doesn't excuse the ICE behavior a bit. They could have just revoked the visas and asked employees to leave.

It's also quite clear that the Korean companies were not flying engineers here to save on wages.