Consistent with all applicable laws and ethical standards relating to recusals and disqualifications, no Federal employee or contractor may participate in a DOT enforcement action in any capacity, including as ALJ, adjudication counsel, adversarial personnel, or decisional personnel, if that person has:

1. (a) A financial or other personal interest that would be affected by the outcome of the enforcement action;
2. (b) Personal animus against a party to the action or against a group to which a party belongs;
3. (c) Prejudgment of the adjudicative facts at issue in the proceeding; or
4. (d) Any other prohibited conflict of interest.