I used to live in Florida, and harvesting live rock is illegal. It doesn't matter if you are taking it 200 feet from the reef to your aquarium, or shipping it to Chicago, its the same crime.
Taking live rock out of The State of Hawaii is a MAJOR crime. Are you allowed to keep it at home, as long as "home" is within Hawaii?
I don't know, thats why I left my 1st post.