JM 9-27.270
Whenever an attorney for the government declines to commence or recommend federal prosecution, he/she should ensure that his/her decision and the reasons therefore are communicated to the investigating agency involved and to any other interested agency, and are also reflected in the office files to ensure an adequate record of disposition of matters that are brought to the attention of the government attorney for possible criminal prosecution, but that do not result in federal prosecution. When prosecution is declined in serious cases on the understanding that action will be taken by other authorities, appropriate steps should be taken to ensure that the matter receives their attention.
[updated February 2018]