from the use of waterboarding, which he considered torture, would not be admissible as evidence in the military commissions. By this time, charges were being developed against high-value detainees, some of whom had been waterboarded in the custody of the CIA. Davis was overruled in his policy by his superiors, including William J. Haynes, II, the General Counsel for the Department of Defense. Davis resigned in protest and transferred to become the Head of the Air Force Judiciary, stating, "The guy who said waterboarding is A-okay I was not going to take orders from. I quit." He also charged that there was meddling from the Pentagon in cases, and claimed this presented serious conflicts of interest. Davis said he was denied an end-of-tour medal for his two years at Guantanamo because he resigned and later spoke out about problems in the Pentagon's Office of Military Commissions. Davis stated about the medal denial, "I tell the truth, and I get labeled as having served dishonorably. I'm very concerned about the chilling effect ... on the process". Since his resignation, Davis has frequently spoken out against the Commissions. In 2008, Davis was called by the defense to testify in the military commission of Salim Ahmed Hamdan, Osama bin Laden's driver, where he repeated his accusations of political interference. He said Pentagon interest in the progress of trials of detainees greatly increased after September 2006, when high-value detainees were transferred from the CIA to Guantanamo. Congressional Research Service Davis was named the head of the Foreign Affairs, Defense and Trade Division of the Congressional Research Service in December 2008; and was fired from this job in late November or early December 2009. His firing was thought prompted because of an op-ed Davis published in The Wall Street Journal that criticized a federal proposal to prosecute detainees in either military commissions or federal courts; he believed that one venue had to be consistently used. Davis wrote: "The administration must choose. Either federal courts or military commissions, but not both, for the detainees that deserve to be prosecuted and punished for their past conduct." Davis v. Billington In 2010, Davis sued the Library of Congress for wrongful termination under the Hatch Act in Davis v. Billington, claiming his First Amendment free speech rights were violated. The lawsuit was settled out of court and in 2016, Davis announced that his personnel file had been amended to