JM 4-1.430
Agency personnel are in the best position to know or learn the facts involved in a case arising in connection with the activities of their agency as well as to have familiarity with agency practices, statutes, and regulations. Records of the agency relevant to the case can best be assembled and certifications obtained by agency counsel. Thus, it is the policy of the Department of Justice—in particular that of the United States Attorney’s Offices and the civil litigating components of the Department that defend the United States or its agencies, officials, or employees in subject litigation (referred to herein as “DOJ”)—that the involved agencies provide litigation support as outlined below.
[Updated April 2018]