[GreyFriar]

And these are 911 terrorists that were arrested before the attack took place, thus should have been interrogated for what they knew? Or are you talking about the report of the guys taking flying lessons?

[Red Steel]

These guys should have been taken and investigated - al-Mindhar and al-Hazmi. The FBI had these two guys on their radar screen and the FBI should have moved quicker.

Trump is correct in what he says no matter how you cut it. You can start your reading here. I'm not going to spoon feed.

"CIA Releases Declassified Documents Related to 9/11 Attacks"
CIA Releases Declassified Documents Related to 9/11 Attacks, June 12, 2015