Justice Manual § 9-27.630

In entering into a non-prosecution agreement, the attorney for the government should, if practicable, explicitly limit the scope of the government's commitment to:

Non-prosecution based directly or indirectly on the testimony or other information or cooperation that has been or will be provided; or

Non-prosecution within his/her district with respect to a pending charge, or to a specific offense then known to have been committed by the person.

Comment. The attorney for the government should exercise extreme caution to ensure that his/her non-prosecution agreement does not confer "blanket" immunity on the witness. Thus, for example, he/she should attempt to limit his/her agreement to non-prosecution based on the testimony or information provided. Such an "informal use immunity" agreement has two advantages over an agreement not to prosecute the person in connection with a particular transaction: first, it preserves the prosecutor's option to prosecute on the basis of independently obtained evidence if it later appears that the person's criminal involvement was more serious than it originally appeared to be; and second, it encourages the witness to be as forthright as possible since the more he/she reveals the more protection he/she will have against a future prosecution. To further encourage full disclosure by the witness, it should be made clear in the agreement that the government's forbearance from prosecution is conditioned upon the witness's testimony or production of information being complete and truthful, and that failure to testify truthfully may result in a perjury prosecution.

Even if it is not practicable to obtain the desired cooperation pursuant to an "informal use immunity" agreement, the attorney for the government should attempt to limit the scope of the agreement in terms of the testimony and transactions covered, bearing in mind the possible effect of his/her agreement on prosecutions in other districts.

It is important that non-prosecution agreements be drawn in terms that will not bind other federal prosecutors or agencies without their consent. Thus, if practicable, the attorney for the government should explicitly limit the scope of his/her agreement to non-prosecution within his/her district. If such a limitation is not practicable and it can reasonably be anticipated that the agreement may affect prosecution of the person in other districts, the attorney for the government contemplating such an agreement shall communicate the relevant facts to the appropriate United States Attorney and/or Assistant Attorney General. United States Attorneys may not make agreements that prejudice other litigating divisions, without the agreement of all affected divisions. See also JM 9-16.000 et seq. for more information regarding plea agreements.

Finally, the attorney for the government should make it clear that his/her agreement relates only to non-prosecution and that he/she has no independent authority to promise that the witness will be admitted into the Department's Witness Security program or that the Marshal's Service will provide any benefits to the witness in exchange for his/her cooperation. This does not mean, of course, that the prosecutor should not cooperate in making arrangements with the Marshal's Service necessary for the protection of the witness in appropriate cases. The procedures to be followed in such cases are set forth in JM 9-21.000.