When the Justice Department publicly declared torture abhorrent" in a legal opinion in December 2004, the Bush administration appeared to have abandoned its assertion of nearly unlimited presidential authority to order brutal interrogations. But soon after Alberto R. Gonzales's arrival as attorney general in February 2005, the Justice Department issued another opinion, this one in secret. It was a very different document; according to officials briefed on it, [it was] an expansive endorsement of the harshest interrogation techniques ever used by the Central Intelligence Agency. The new opinion ... for the first time provided explicit authorization to barrage terror suspects with a combination of painful physical and psychological tactics, including head-slapping, simulated drowning and frigid temperatures. Later that year, as Congress moved toward outlawing "cruel, inhuman and degrading" treatment, the Justice Department issued another secret opinion. The Justice Department document declared that none of the C.I.A. interrogation methods violated that standard. The classified opinions, never previously disclosed, are a hidden legacy of President Bush's second term and Mr. Gonzales's tenure at the Justice Department. Congress and the Supreme Court have intervened repeatedly in the last two years to impose limits on interrogations, and the administration has responded as a policy matter by dropping the most extreme techniques. But the 2005 Justice Department opinions remain in effect, and their legal conclusions have been confirmed by several more recent memorandums, officials said. They show how the White House has succeeded in preserving the broadest possible legal latitude for harsh tactics.

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