12 CFR 513.3 - Who may practice.
(a) By non-attorneys. (1) An individual may appear on his own behalf (pro se); a member of a partnership may represent the partnership; a bona fide and duly authorized officer of a corporation, trust or association may represent the corporation, trust or association; and an officer or employee of a commission, department or political subdivision may represent that commission, department or political subdivision before the Office.
(2) Any accountant, appraiser or other licensed expert may practice before the Office in a professional capacity.
(b) By attorneys. Any association or other person may be represented in any proceeding or other matter before the Office by an attorney.
(c) Any licensed expert or professional transacting business with the Office in a representative capacity may be required to show his authority to act in such capacity.