Did CIA memos promote immoral interrogation techniques?

Obama has granted immunity to CIA interrogators
In this December 2006 file photo, a detainee is escorted by military guards from his annual Admistrative Review Board hearing at the US Naval base at Guantanamo Bay, Cuba. US President Barack Obama on April 16, 2009 granted immunity to CIA officers involved in tough terror interrogations, as he released graphic memos detailing harsh methods approved by ex-president George W. Bush.
AFP PHOTO / FILES / Paul J. RICHARDS