And you can bet it's the same reason the Senate report on Torture hasn't yet been released. The CIA far exceeded their own definition of 'waterboarding' with at least two or more high-profile detainees, and they don't want the American People to know it. Sadly, as it stands, we'll probably never know how many others were subject to this type of despicable torture as well.
The CIA brought top al-Qaeda suspects close “to the point of death” by drowning them in water-filled baths during interrogation sessions in the years that followed the September 11 attacks, a security source has told The Telegraph.(emphasis mine)The description of the torture meted out to at least two leading al-Qaeda suspects, including the alleged 9/11 mastermind Khalid Sheikh Mohammed, far exceeds the conventional understanding of waterboarding, or “simulated drowning” so far admitted by the CIA.
“They weren’t just pouring water over their heads or over a cloth,” said the source who has first-hand knowledge of the period. “They were holding them under water until the point of death, with a doctor present to make sure they did not go too far. This was real torture.”
The Telegraph (UK) obtained a second source for the article familiar with the Senate report who told them that it contains several "unflinching accounts" of CIA interrogations that would "... deeply shock" the American People.