US airlines have the technoloy
So the new rule will be if you fly to the US on a US carrier you get to take your laptop. If you chose to fly Emirates, Etihad, Singapore you don't.
I remember the days of flyin tp the US pre-911. At Heathrow you would have to get your US checked baggage x-rayed separately after checkin. They would then put a "security scanned" sticker on it and give it back to you so you could take it back to the baggage drop! Not even security theatre, more like security pantomime