Yeh cool. I think it was entirely relevant because exactly what I stated is true.
You could potentially move to a new state and be denied a driver's license due to their state laws. Now while this is far fetched because almost all the states have near identical laws, it is possible in theory. As I stated, there is NO NATIONAL license for driving or for Medical practice. At any time, either one COULD be honored, but as a whole you have to get a new license in each state you wish to reside or practice in.
Wish to argue semantics further? The fact remains there is no national license and both medical or driver's could be honored while passing through, however if you move there, you will need to get licensed for both in your new state.
Limitations of Full Faith and Credit
The Full Faith and Credit Clause does not require a state to substitute another state’s law or policy for its own, which means it does not have to honor something that is specifically against its own law. The issue of licensure is an example of this limitation. For example, Ron, who has a driver’s license in Arkansas, may legally drive during a visit to Missouri. If Ron moves to Missouri, however, he will be required to obtain a driver’s license in his new home state. This holds true for hunting licenses, marriage licenses, and firearm licenses.
Licensed professionals are another example of each state being allowed to maintain and honor only their own legislation. Doctors, pharmacists, contractors, attorneys, and other professionals who want to practice in multiple states must obtain a separate license in each state.