The Israeli method is great and wise. Couple that with bomb-sniffing dogs and solid identity control and you will have a system that can work.
Bomb dogs are really great, but not entirely practical. They can’t work 8 hr shifts & stay in full drive. So you need quite a lot of dogs & handlers.
Finding the genetically right dogs & getting then trained is a project. That said, the use of good dogs is one of the few truly good uses of taxpayer money.
Since TSA did not ‘invent’ this method, it would not work for them...!!!!....government at it’s best worst.