Investigation into pilfered documents reveals former president signed letter President Bill Clinton signed a letter authorizing former National Security Adviser Sandy Berger's access to classified documents that later came up missing, according to a newly released investigation report by the National Archives and Records Administration. The sensitive drafts of the National Security Council's "Millennium After Action Review" on the Clinton administration's handling of the al-Qaida terror threats in December 1999 suspiciously disappeared after Berger said he intended to "determine if Executive Privilege needed to be exerted prior to documents being provided to the 9/11 Commission." Then-Attorney General John Ashcroft testified...