JM 9-2.032
2. When—
(a) the charges are based, in whole or in part, on actions or omissions by the attorney during the representation of a current or former client; and
(b) the attorney's current or former client is, or is likely to be, a witness against the attorney; and
(c) the client will, or is likely to, testify against the attorney pursuant to a non-prosecution, cooperation, or similar agreement with the government
4. Guidance With Regard to Prosecutors' Participation in Attorney Prosecution
The following guidance is provided for Assistant United States Attorneys (AUSAs) and Department Attorneys regarding certain prosecutions of attorneys:
2. In light of the foregoing requirements—
(a) An AUSA or Department Attorney must consider whether it is appropriate for him/her to participate in a criminal investigation or prosecution of a private attorney in circumstances in which, prior to the initiation of the criminal investigation or prosecution, the AUSA or Department Attorney was involved in a matter in which the private attorney represented a current or former target or subject of the investigation or litigation, regardless of whether that investigation or litigation was civil or criminal in nature and regardless of whether that investigation or litigation is ongoing.
(b) In making this determination, the AUSA or Department Attorney shall weigh, where applicable, the following factors, among others:
(i) the level of his/her involvement in the investigation or litigation involving the attorney's current or former client;
(ii) the level of his/her involvement in the ongoing criminal investigation or prosecution of the attorney;
(iii) the amount of time, if any, that has passed between the investigation or litigation involving the attorney's current or former client and ongoing criminal investigation or prosecution of the attorney;
(iv) the level of the attorney's involvement in the representation of the current or former client; and
(v) the potential that there will be a public perception of favoritism or animus toward the attorney.
(c) An AUSA's or Department Attorney's decision regarding his/her participation in such a criminal investigation or prosecution must be reviewed personally by the United States Attorney or Department Component Head, respectively. Regardless of the outcome of that review, the United States Attorney or Department Component Head also shall consider whether it is appropriate to recuse the entire office. See JM 3-1.140.
[updated July 2020]