FBI Director Mueller said approximately 2000 Flight Schools were too much to check on last July/August; doesn't sound like an undoable task, if say, the local police were brought in to do a preliminary check. If we can roust dangers to the public safety like non-seatbelt wearers, couldn't the local cops be enlisted by the FBI. I know it goes against all norms American, but as a short term measure. Guess i don't like hearing "get used to terrorists potentially explodiing near you". If we can set up seatbelt/alcohol roadblocks, why not ones to catch terrorists.
Good question. Occams razor says that the simplest answer is often the correct one.
In this case, the "simplest answer" is that the really don't want to catch the terrorists.
That was another Mueller lie. It could have been done in days if the boss wanted it done. Make no mistake about it.