18 CFR § 385.2102 - Suspension (Rule 2102).
(1) Not to possess the requisite qualifications to represent others, or
(2) To have engaged in unethical or improper professional conduct, or
(3) Otherwise to be not qualified.
(b) Contumacious conduct in a hearing before the Commission or a presiding officer will be grounds for exclusion of any person from such hearing and for summary suspension for the duration of the hearing by the Commission or the presiding officer.