Next you will have to take a training course and pass a flight test to buy one. You will have to renew annually so the gov can fund the new department created to run the program. Won't be long till everyone will work for the government to keep an eye on everyone else. Oh wait, isn't that what the old Soviet Union did and China and North Korea doing today?
Gun registration will be the next argument. "If we have to register drones' for safety why not evil guns."
It is amazing every drone that has crashed and was investigated the gov was able to track down the owner. So why the need to register an item that has a serial number and recorded at time of sale? Just more control.