NJ, HI, USVI and PR seem to be different. this is what the NOAA site says.Tony,
Since you are in PA, if fishing in PA with a valid license you DO NOT have to register, the state does it. If you decide to fish in another state then you have to follow their rules. (Like VA) You may need to register with that state.
Here is the link to help you out....https://www.countmyfish.noaa.gov/register/
Thanks for posting, looks like you need to register in Va even though we have reciprocal license agreements. This was in the Va link provided by BayViews.