Some people ask, “Why do conspiracy theories get such traction in people’s minds?”
Perhaps because the arguments against them are not entirely dissuasive, but I have to say, if nothing else, it’s largely because of stories like this one, that actually lend credence to people’s suspicions by providing them with objective proof of the government’s attempt to obfuscate and withhold vital information.
Whether it is done in order to prevent embarrassment, or to protect themselves from prosecution, the fact remains, Bush officials in Washington were more concerned with covering their own butts, than publicly revealing an inconvenient truth. Even if it meant that national security might be improved and a similar event avoided.
As of today, it has been revealed via a FOIA request made by the ACLU, that Attorney General John Ashcroft, Defense Secretary Donald Rumsfeld and CIA Director George Tenet sent a letter dated January 16, 2004 to the members of the 9/11 Commission that there was an investigatory line it was “not allowed to cross.”

The line was in questioning the terrorist suspects that the Bush Administration was busy torturing, in violation of both U.S. and international law. In other words, the Commission was not allowed to question the accused.
Hardly a high point for American jurisprudence.