Cal. FIN § 10003

No foreign savings association may conduct the business of an association in California, and no foreign savings association or foreign holding company may acquire control of a California savings association, without the written approval of the commissioner. A foreign savings association or foreign holding company shall submit to the commissioner a written application for approval in the form and shall pay such fees as the commissioner prescribes. The foreign savings association or foreign holding company shall submit with the application such information, data, and records as the commissioner may require in order to make his or her determination. The commissioner may issue such regulations as he or she deems to be appropriate to preserve the public interest and integrity of the state’s savings association system and to protect the interests of savings account holders, borrowers, and stockholders resident in this state. The commissioner may make arrangements with the supervisory officials of other states for reciprocal examination of California savings associations, foreign savings associations and foreign holding companies, and the imposition of fees therefor and may condition his or her approval pursuant to this chapter upon the existence of those arrangements.