To make a long story short, we can't have hedgehogs for some pretty B.S. reasons.
This is from Hedgehog Central:
Pennsylvania
A very unfortunate political battle has developed within the State of Pennsylvania making hedgehogs illegal to the point where threats have been made against even the transport of hedgehogs through the state on the way to another state.
All of this is the result of an initial (and unusual) law established in the 1990's. Under that law, hedgehogs within the state were legal, but it was illegal to import fresh bloodlines into the state. A few breeders violated that law resulting in the Pennsylvania Game Commission (PGC) declaring all out war on all hedgehogs within the state.
Breeder's homes have been raided and their hedgehogs confiscated with all of the zeal of a major drug bust. Suffice it to say, owning a hedgehog in Pennsylvania under the draconian rule of PGC is extremely dangerous for both owner and hedgehog.
I found this out when I was looking into getting a hedgehog a few years ago but found this disappointing information instead. Luckily, I go to college in OH, so I may be able to get one still and have one of my many friends out there who also want one keep it over the summers while I'm home in PA.