"Berger's home and office were searched earlier this year by FBI agents armed with warrants after he voluntarily returned documents to the National Archives. However, still missing are some drafts of a sensitive after-action report on the Clinton administration's handling of al-Qaida terror threats during the December 1999 millennium celebration." See if this sounds right: Feds knew what Berger did, but due to his stature gave him a "pass" if he "voluntarily" returned all the records. He didn't return them all, so then the Feds executed the warrants.