Rather than the "honest mistake" he described last summer, Berger acknowledged to U.S. Magistrate Deborah Robinson that he intentionally took and deliberately destroyed three copies of the same document dealing with terror threats during the 2000 millennium celebration.
"Guilty, your honor," Berger responded when asked how he pleaded.
The charge of unauthorized removal and retention of classified material is a misdemeanor that carries a maximum sentence of a year in prison and up to a $100,000 fine.
However, under a plea agreement that Robinson must accept, Berger would serve no jail time but instead pay a $10,000 fine, surrender his security clearance for three years and cooperate with investigators. Security clearance allows access to classified government materials.
Sentencing was set for July 8.
The court appearance was the culmination of a bizarre episode in which the man who once had access to the government's most sensitive intelligence was accused of sneaking documents out of the Archives, which houses the Constitution, Declaration of Independence and other cherished and top-secret documents.
The Bush administration disclosed the investigation in July, just days before the Sept. 11 commission issued its final report. Democrats claimed the White House was using Berger to deflect attention from the harsh findings, with their potential for damaging President Bush's re-election prospects.