> I think it's more likely they didn't understand the law fully rather than malicious intent. The workers were after-all, temporary and were not going to be staying in the US permanently.

Oh yeah, we agree there, what I meant is that of all the times companies brought over employees here to work for some time, this time it so happened that their salary was below the minimum. If they were bringing over people from, say, Canada or Germany, they'd probably be paid way above the minimum.