The CIA said they knew future "9/11 hijackers" Nawaf al-Hazmi and Khalid al-Mihdhar were active members of Al-Qaeda – before they waltzed comfortably into the US through California in broad daylight.
Their Saudi intelligence handler put them up with a San Diego landlord who was an FBI informant propped up by U.S. government spooks.
The NSA was recording and listening to their phone calls which they knew originated from Al-Qaeda bases in the Middle East - but no one did anything because they didn't want to violate their rights?
Their rights as what? Foreign born terrorists in the US working with Saudi and therefore US intelligence? (I guess that gives you more rights than a US citizen.)
The FBI says they couldn't find them even though they were listed by name in the San Diego phone book.
The 9/11 Commission, looking at this story, concluded: "Nobody's at fault."
Right now Saudi Arabia and Qatar (and perhaps other countries) are bankrolling foreign-born terror squads in Syria and the US is calling them "rebels" and talking about arming them and even supporting them with military action.
It's 9/11 all over again, just in a different country and with a lot more people being killed.