JM 9-73.510
In a criminal case, the United States Attorney should not, as part of a plea agreement or an agreement to testify, or for any other reason, promise an alien that he/she will not be removed, without prior authorization from the Department of Homeland Security and the Assistant Attorney General of the Criminal Division. See JM 9-15.800 and JM 9-16.020.
[updated June 2018] [cited in JM 9-16.020]