In Chechnya, Iraq and Israel, there have been several incidents of suicide bombs carried by disabled people. If we suddenly stopped screening certain passengers, they would no doubt use it to their advantage.
I think the TSA is incompetent and we definitely need better methods and more competent screeners. More behavior profiling and bomb sniffing equipment instead of groping.
Remember, it only takes a high explosive charge the size of a white-out bottle to bring down a plane with hundreds of people. Everything going on a commercial plane must be screened for explosives and I think groping is less effective than dogs or sniffer machines.
I see from your profile that you are an engineer. Can you explain to this dumb ol’ pilot how and explosive charge the size of a white out bottle can take down a whole airplane? Does it take out all the engines? Does it take off a wing?
I also see that you are an American by choice. Welcome! Come on down to Texas and learn more about our great country.