[3][1] He then briefly served as deputy director of the Enforcement Division of the Commodity Futures Trading Commission before joining DOJ's Public Integrity Section in 1980.

[3] While in the Public Integrity Section, Jarrett prosecuted the chairman of the Kentucky Democratic Party for insurance mail fraud,[4] a Mississippi sheriff for drug trafficking, and CIA agents for theft of government funds.

There he supervised the prosecutions of drug trafficker Rayful Edmond, U.S. Representative Dan Rostenkowski, D.C. Mayor Marion Barry, as well as a group of twelve corrupt D.C. Metropolitan Police officers.

[3] On May 21, 1998, U.S. Attorney General Janet Reno announced Jarrett's appointment as the chief counsel and director of DOJ's Office of Professional Responsibility (OPR).

[5] On February 22, 2008, Jarrett announced an investigation of DOJ legal memoranda by John Yoo, Jay Bybee, Steven G. Bradbury, and others justifying waterboarding and other harsh interrogation techniques.