A footnote to another 2005 Justice Department
memo said that waterboarding was used both more frequently and with a greater volume of water than the CIA rules permitted, the newspaper claimed, while a separate footnote said that
the use of the harshest techniques appeared to have been “unnecessary” in Abu Zubaydah's case.
On Saturday, The New York Times claimed that Abu Zubaydah had already given all the information he knew before he was subjected to waterboarding.
Officials in the Bush Administration had claimed that harsh interrogation techniques were necessary to get information but the number of times Mohammed was subjected to waterboarding will raise questions about its efficacy and about assertions from officials that the methods were used under strict guidelines.
Mr Obama, who will make his first visit to the CIA headquarters today, does not intend to prosecute Bush Administration officials who devised the policies that led to the harsh interrogation techniques, the White House Chief of Staff, Rahm Emanuel, said on Sunday.