The European FBI is a false problem

I had a good opinion by Enrico Letta, The former head of the government thrown from Renzi after the famous phrase ” enricostaisereno “. My good opinion was based on the fact that when he was head of the government, He limited himself to doing almost nothing, Basically not to do damage,  And this certainly produced economic results. Monti was a real Attila,  Renzi was a real economic whore. But now I'm listening to Enrico Letta on La7, coffee break, And it seems to me anything that tells bar speeches about the European FBL. Argues that if there was a European FBI, the problem of terrorism would be reduced, And this would have been clearly seen (In his opinion) During the Paris attack, where borders played a role, or rather the non -communication between intelligence services. Then I get a very simple question to ask: why in the American United States, where there has been the FBI for many decades, there was the 11 September? Evidently the existence of an FBI does not guarantee at all against the attacks, not even against the worst. henry, Stay peaceful and think about your chair. Maybe that saying that says it is really true “who does not know teaches”.