A judge shall not appear voluntarily at a public hearing before, or otherwise consult with, an executive or a legislative body or official, except:
(A) in connection with matters concerning the law, the legal system, or the administration of justice;
(B) in connection with matters about which the judge acquired knowledge or expertise in the course of the judge’s judicial duties; or
(C) when the judge is acting pro se in a matter involving the judge’s legal or economic interests, or when the judge is acting in a fiduciary* capacity.