Fin. Code, § 1902

Before any bank shall be permitted to purchase stock in any corporation described in Section 1900 the said corporation shall enter into an agreement or undertaking with the commissioner to restrict its operations or conduct of its business in such manner or under such limitations and restrictions as the said commissioner may prescribe for the place or places wherein such business is to be conducted. If at any time the commissioner shall ascertain that the regulations prescribed by him or her are not being complied with, said commissioner is hereby authorized and shall have power to institute an investigation of the matter and to send for persons and papers, subpoena witnesses and administer oaths in order to satisfy himself or herself as to the actual nature of the transactions referred to. Should such investigation result in establishing the failure of the corporation in question, or any bank which may be a stockholder therein, to comply with the regulations laid down by the said commissioner, said bank may be required to dispose of its stockholding in the said corporation upon reasonable notice.