You can't pass a law for everything. At some point people need to take responsibility for their own actions. Otherwise things start getting Orwellian rather quickly.
Which is why I suggested that an organization of interested people should come up with a licensing system and work with the FAA to manage the concerns for risks associated with the proliferation of hobby drones in the same way the AMA did with model planes (sorry, I said AMYA earlier...that's the model yacht association)
