Took a while to read...I hope others take the time to read this.
Taguba, watching the hearings, was appalled. He believed that Rumsfeld’s testimony was simply not true. "The photographs were available to him—if he wanted to see them," Taguba said. Rumsfeld’s lack of knowledge was hard to credit. Taguba later wondered if perhaps Cambone had the photographs and kept them from Rumsfeld because he was reluctant to give his notoriously difficult boss bad news. But Taguba also recalled thinking, "Rumsfeld is very perceptive and has a mind like a steel trap. There’s no way he’s suffering from C.R.S.—Can’t Remember Shit. He’s trying to acquit himself, and a lot of people are lying to protect themselves." It distressed Taguba that Rumsfeld was accompanied in his Senate and House appearances by senior military officers who concurred with his denials.
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Taguba’s assignment was limited to investigating the 800th M.P.s, but he quickly found signs of the involvement of military intelligence—both the 205th Military Intelligence Brigade, commanded by Colonel Thomas Pappas, which worked closely with the M.P.s, and what were called "other government agencies," or O.G.A.s, a euphemism for the C.I.A. and special-operations units operating undercover in Iraq. Some of the earliest evidence involved Lieutenant Colonel Steven L. Jordan, whose name was mentioned in interviews with several M.P.s. For the first three weeks of the investigation, Jordan was nowhere to be found, despite repeated requests. When the investigators finally located him, he asked whether he needed to shave his beard before being interviewed—Taguba suspected that he had been dressing as a civilian. "When I asked him about his assignment, he says, 'I’m a liaison officer for intelligence from Army headquarters in Iraq.’ " But in the course of three or four interviews with Jordan, Taguba said, he began to suspect that the lieutenant colonel had been more intimately involved in the interrogation process—some of it brutal—for "high value" detainees.
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Despite the subsequent public furor over Abu Ghraib, neither the House nor the Senate Armed Services Committee hearings led to a serious effort to determine whether the scandal was a result of a high-level interrogation policy that encouraged abuse. At the House Committee hearing on May 7, 2004, a freshman Democratic congressman, Kendrick Meek, of Florida, asked Rumsfeld if it was time for him to resign. Rumsfeld replied, "I would resign in a minute if I thought that I couldn’t be effective. . . . I have to wrestle with that." But, he added, "I’m certainly not going to resign because some people are trying to make a political issue out of it." (Rumsfeld stayed in office for the next two and a half years, until the day after the 2006 congressional elections.) When I spoke to Meek recently, he said, "There was no way Rumsfeld didn’t know what was going on. He’s a guy who wants to know everything, and what he was giving us was hard to believe."
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Abu Ghraib had opened the door on the issue of the treatment of detainees, and from the beginning the Administration feared that the publicity would expose more secret operations and practices. Shortly after September 11th, Rumsfeld, with the support of President Bush, had set up military task forces whose main target was the senior leadership of Al Qaeda. Their essential tactic was seizing and interrogating terrorists and suspected terrorists; they also had authority from the President to kill certain high-value targets on sight. The most secret task-force operations were categorized as Special Access Programs, or S.A.P.s.
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Much more to read at OP's link.