Originally Posted by Canuman
The cops threw the book at him, and among the charges were violation of this rule. I don't know where and if the rule applies, or if it still does. This was some years ago.
I would be curious about the exact statute. The only thing I can find here (California) is that if you move to the state you must get a license here within 2 weeks. I have also historically seen people charged with having licenses in multiple states which is much more difficult now because of the network that links insurance companies and DMV agencies in almost every US state and Canada.
This however could not be it if you are just traveling through a 3rd state so it must be something else.