N.M. Admin. Code § 22.600.2.15
A hearing officer shall not, by words or conduct, show any bias or prejudice, or harass any party or person present at a hearing, based on race, religion, color, national origin, ethnicity, ancestry, sex, sexual orientation, gender identity, marital status, socioeconomic status, political affiliation, age, physical or mental disability or serious medical condition. To the extent reasonably possible, a hearing officer shall not permit or allow others involved in the hearing process, including the hearing officer's staff or representatives of the parties, to engage in such bias, prejudice, or harassment. A hearing officer and others may make legitimate and respectful reference to, and discuss, the listed factors when they are relevant to an issue in the proceeding.
N.M. Admin. Code § 22.600.2.15