The Left is already at work dispelling "Able Danger" with the "Two Atta Theory". The theory goes that the data mining program of Able Danger was also picking up information from another Mohammed Atta who was part of the Abu Nidal organization and was arrested in 1987 in New York on an Israeli warrant charging him with participating in an attack on a bus in the Israeli-occupied West Bank in 1986. This "Mohammed Atta" was a naturalized US citizen and this fact (?) could have been the reason for the Pentagon lawyers shying away. The Left is deep mining for some plausible denial.
That's one reason why the hearings can't just focus on whether Clinton could have prevented 9-11 with this knowledge. It needs to be a wider investigation of the genesis of Wall and its effects, and whether the 9-11 Commission acted irresponsibly in not including Able Danger in its final report.
He who frames the question wins the argument.
Pinz