Hindsight is ALWAYS 20/20.
Lets be really honest here. Nobody ever believed that would happen. Foreign terrorist incidents had, up until that point, been limited here in the Americas. And although the devastation of 9/11 was major, terrorist incidents are still somewhat limited here. We have had more incidents in the United States perpetrated by, as Danny Coulson put it, Bubbas, which are the home-grown yahoos who read 'the turner diaries' and such.
I honestly don't believe that the information was there, to accurately tell authorities, 100%. Oh sure, someone in the Capitol thinks so, but remember, any senator or congressman is a politician, and their first and foremost desire is to get recognized. I am a politician, and the first thing you have to say to yourself, when you see a politician standing up for something, is what is the angle?
Its been almost a year since the attacks, and because of the talk about did they know, or did they not, just proves to me that Washington is closer than ever to getting back to normal.