Politics: How much of what the TSA does is actually useless?

One wonders.

Here is an interesting item on CNN.com where an Israeli security expert was interviewed.

Excerpt:
It's mandatory that every passenger -- I don't care his religion or whatever he is -- every passenger has to be interviewed by security people who are qualified and well-trained, and are being tested all year long. I trained my guys and educated them, that every flight, for them, is the first flight. That every passenger is the first passenger. The fact that you had [safe flights] yesterday and last month means nothing. We are looking for the one who is coming to blow up our aircraft. If you do not look at each passenger, something is wrong with your system.
............
Look what happened, Richard Reid, the shoebomber, hid the explosives in his shoes. The result -- all of us have to take off our shoes when we come to the airport. The Nigerian guy hid his explosives in his underwear. The result -- everyone now will be seen naked. Is this the security system that we want?