yeah some states have a superhero registry, but i dont think its actually run by the state in any way...
i saw a show on g4 (cant remeber what it was called something underground i think) and in an episode they talk to abunch of vigillantes who dress up like superheros and actually fight crime. and kick ass at it to. some have secrit identities ans shit crazy world we live in , kick ass might as well have been based on true stories all across america