Here’s the OLC memo from May 30, 2005, which states that “enhanced interrogation techniques” used by the CIA are “consistent with United States obligations”:

olc112

olc25

olc31

olc41

olc51

olc61

olc71

olc81

olc91

olc101

olc111

olc121

olc131

olc141

olc151

olc161

olc171

olc181

olc191