The Osage Nation Tax Commission, as a government agency of the Osage Nation, its Commissioners, and employees shall be immune from any suit in law or equity while performing their lawful duties within the scope of the authority delegated to them; provided, that any taxpayer or other person against whom the Tax Commission has assessed taxes, penalties, or interest and who has paid under written protest any taxes, penalties, or interest may bring an action in the Osage Nation Court after exhaustion of administrative remedies, to enjoin the Tax Commission from collecting any taxes, penalties, or interest assessed, or for the recovery of any taxes, penalties, or interest paid under written protest which the Court finally determines to have been wrongfully assessed or collected. ONCA 06-10, eff. Sept. 29, 2006; ONCA 14-83, eff. Nov. 24, 2014.