Steve has nipped it in the butt. Current law on a lot of issues are valid by the state you hold your license in. Of course if the government gets their way we will have the same most restrictive laws from all around the country applied. I know, were not there yet. I'll be quite. shhh.....Some of this is about chance and being in the wrong place at the wrong time and if the cop wants to be an ass. Just don't be one yourself.
I have a class A and have for a number of years, so I'm covered under weight anyways, but if a claim was made that I was chauffeuring folks around I would not have the right license for that.
Ken