California Code, Financial Code - FIN § 1462

A commercial bank may borrow money by discounting or otherwise, and may borrow money secured by real property owned by the bank, to an amount not in excess of its shareholders' equity, but shall not borrow money except as provided in Sections 1464 and 1465 in excess of such amount without the prior written approval of the commissioner.

The amounts of moneys so borrowed by a commercial bank together with the amount of any of its deposits secured by surety bonds shall not at any one time exceed the amount of its shareholders' equity without the prior written approval of the commissioner.