Gibson v. Berryhill: Change in Alabama law required optometrists to work in private practice. Corporate optometrists were called before the state optometry board, which was completely made up of private practitioners, to determine whether their licenses should be revoked. - Rule: Both prejudgment of a party and a pecuniary interest in the outcome of the adjudication are sufficient to establish partiality. o Evidence that the optometry board had prejudged the corporate optometrists. o Private optometrists had a financial interest in revoking the licenses because it would remove competition.