Seeing that it is for sale, I'd say you are safe. Take your horse and find out. Won't potentially lose your permit that way.
Naw this being OmahaThey'd site me for having an unregistered Horse and confistate it.
No - we just need to take the force of law out of this "signage" crap.
Is an unregistered horse like an unregistered handgun and considered an illegal horse or, since we're talking Omaha, is he considered an undocumented horse?