What you are telling here in absolutely not true. I'm personally an eastern European and know a lot of people leaving their CDL behind, because about 2-3 years ago government came up with a law where you have to show proof of your legal status or renew CDL. So if someone with invalid visa etc was driving they all have to stop doing that as their CDL is expired already or will expire in a few months. I know a lot of people started driving under 26.000lb as it does not require to have a CDL. This is in IL.