What makes you think they wouldn't blow whatever device on them right at the screening area? Why go for the lobby, when they can trash the metal detectors and other geat--and TSA people as well as 'fellow' travellers?
The rule is nonsense, but it is designed to intimidate the public into submission. After all, people endure roadside checkpoints 'for their safety' because someone else on the highway might have had a beer too many.
We have become a nation of cowardly sheep.
They who will sacrifice essential liberty for safety will find neither.
It is clear from all the arrests of TSA Perverts (including high ranking TSA Officials) that BO & Big Sis intentionally hired sexual perverts to assault the American People.
Call your County Sheriff, DA, Grand Jury Foreman and Police Chief and demand that BOs TSA Pervert Thugs be arrested for assault.
http://standupamericaus.com/our-privilege-our-right-and-our-duty-civilian-grand-jury:33320
Ditto everything you said!