16 CFR § 1502.21
Disqualification of presiding officer
February 12, 2021
(a) A participant may request the presiding officer to disqualify himself/herself and withdraw from the proceeding. The ruling on any such request may be appealed in accordance with §1502.35(b).
(b) A presiding officer who is aware of grounds for disqualification, whether or not raised by a participant, shall withdraw from the proceeding.