Re: Drone enthusiasts...
As I said, please read the judgment. The part of the law that was used to justify the ban was directed against machine guns, which a bump stock clearly is not, nor does it turn a semi automatic firearm into a machine gun. If this is confusing, I recommend looking up how firearms work.
I have no interest in nor intention to argue the rights and wrongs of bump stock ownership. I am only discussing the way Separation of Powers and Checks and Balances work in the United States. A law need not be excessively complex, one could simply define 'devices which increase the firing rate beyond that obtainable through conventional trigger operation' as prohibited items and thwart future ingenuity. Lawmakers had years to make these changes and, instead, they sat on their arses with fingers crossed that SCOTUS wouldn't do their jobs.
Justifying transgressions as responses to emergencies invites tyranny and if lawmakers cannot pass effective, well written laws then perhaps they aren't the best people for those jobs. Emergency powers acts are written for this precise purpose and having what politicians and agencies can and cannot do in response to emergencies allows for consent of the citizenship to be obtained prior to emergencies through acceptance or objections to these powers.