Sandy Berger (search) is under criminal investigation because he took highly classified documents from the National Archives. Following is biographical information on Berger.

— Unpaid senior adviser to Sen. John Kerry's Democratic presidential campaign.

— Chairman of Stonebridge International LLC, an international strategic advisory firm based in Washington, DC.

— Senior advisor to Lehman Brothers, international strategic advisor to law firm of Hogan & Hartson.

— National security advisor to President Bill Clinton from 1997 to 2001. During Berger's tenure, the United States engaged in military operations against Iraq on four occasions.

— Deputy national security advisor, 1993-1996.

— Deputy director of the State Department's policy planning staff under Secretary of State Cyrus Vance, 1977-1980.

— Previous government service includes: special assistant to former New York City Mayor John Lindsay, legislative assistant to former U.S. Sen. Harold Hughes of Iowa and to Rep. Joseph Resnick of New York.

— Author of "Dollar Harvest" (1971), a book on American rural politics.

— Author of numerous articles on international affairs.

— Graduate of Harvard Law School, 1971.

— Graduate of Cornell University, B.A. 1967.

— Married to Susan Berger, father of three children.

Source: Stonebridge International, Harvard.