When Comey was Deputy Attorney General in 2005, he endorsed a memorandum that approved the use of 13 so-called "enhanced interrogation techniques" that included waterboarding and sleep deprivation for up to , which would be used by the CIA when interrogating suspects. Comey objected to a second memorandum, drafted by Daniel Levin and signed by Steven G. Bradbury, which stated that these techniques could be used in combination. Comey was one of the few members of the Bush administration who had tried to prevent or limit the use of torture.