Any disagreement between or among heads of the organizational units as to their respective jurisdictions shall be resolved by the Attorney General, who may, if he so desires, issue an order in the numbered series disposing of the matter.

When an assignment for the handling of mail or a case has been made through established procedures and the appropriate authorities in any organizational unit of the Department disagree concerning jurisdiction of the unit for handling the matter or matters assigned, the disagreement, together with a statement of the view of the unit or units involved, shall be referred to the Assistant Attorney General for Administration for determination. If the disagreement cannot be resolved, the matter shall be referred to the Deputy Attorney General for final disposition.

The Immigration and Naturalization Service (Service) shall not be bound, in the exercise of its authority under the immigration laws, through plea agreements, cooperation agreements, or other agreements with or for the benefit of alien defendants, witnesses, or informants, or other aliens cooperating with the United States Government, except by the authorization of the Commissioner of the Service or the Commissioner's delegate. Both the agreement itself and the necessary authorization must be in writing to be effective, and the authorization shall be attached to the agreement.