Drbill,
The thing to remember is that these wrecks are considered tombs. Much in the same way that soldiers and other service men are laid to rest in national cemeteries. The way I would look at this law it is a way to prevent grave robbery and at the very least irresponsible divers.
However, I will agree that the proposed change as I read it was very flawed, and should be more specific as to what constitutes disturbing the site. A great way to look at many of these wrecks is much in the same way the USS Arizona is viewed. It is a permenant way to remember the brave men that went down with their ship. To remove them would be disrespectful. You also have to understand of the military services I would say that the Navy is perhaps the most superstitious, and it is just plain bad luck to disturb a sunken wreck.