Guantanamo Trials Rigged Says Former Chief Prosecutor

Still in the military, he has irritated the administration, saying in articles and interviews that Pentagon officials interfered with prosecutors, exerted political pressure and approved the use of evidence obtained by torture.

Now, Colonel Davis has taken his most provocative step, completing his transformation from Guantánamo’s chief prosecutor to its new chief critic. He has agreed to testify at Guantánamo on behalf of one of the detainees, Salim Ahmed Hamdan, a driver for Osama bin Laden.

Colonel Davis, a career military lawyer nearing retirement at 49, said that he would never argue that Mr. Hamdan was innocent, but that he was ready to try to put the commission system itself on trial by questioning its fairness. He said that there “is a potential for rigged outcomes” and that he had “significant doubts about whether it will deliver full, fair and open hearings.”