28 CFR 71.14 - Separation of functions.
(a) The investigating official, the reviewing official, and any employee or agent of the authority who takes part in investigating, preparing, or presenting a particular case may not, in such case or a factually related case.
(1) Participate in the hearing as the ALJ;
(3) Make the collection of penalties and assessments under 31 U.S.C. 3806.