9/11 Commission members Thomas Kean and Lee H. Hamilton wrote that although US President George W. Bush had ordered all executive branch agencies to cooperate with the probe, "recent revelations that the CIA destroyed videotaped interrogations of Qaeda operatives leads us to conclude that the agency failed to respond to our lawful requests for information about the 9/11 plot."
"Those who knew about those videotapes — and did not tell us about them — obstructed our investigation."
They continued: “There could have been absolutely no doubt in the mind of anyone at the CIA — or the White House — of the commission’s interest in any and all information related to Qaeda detainees involved in the 9/11 plot.
"Yet no one in the administration ever told the commission of the existence of videotapes of detainee interrogations," Kean and Hamilton wrote
The letter can be found on page 26 of the ACLU's set of unveiled documents.
http://www.aclu.org/files/assets/CIA.pdf
"Those who knew about those videotapes — and did not tell us about them — obstructed our investigation."
They continued: “There could have been absolutely no doubt in the mind of anyone at the CIA — or the White House — of the commission’s interest in any and all information related to Qaeda detainees involved in the 9/11 plot.
"Yet no one in the administration ever told the commission of the existence of videotapes of detainee interrogations," Kean and Hamilton wrote
The letter can be found on page 26 of the ACLU's set of unveiled documents.
http://www.aclu.org/files/assets/CIA.pdf