California Code, Financial Code - FIN § 16102

(a) Any foreign (other state) credit union that is authorized to and does maintain a California branch office or California facility is exempted from the restrictions of Section 1 of Article XV of the California Constitution relating to rates of interest upon the loan or forbearance of any money, goods, or things in action or on accounts after demand.

(b) This section does not exempt a foreign (other state) credit union or any subsidiary from complying with all other laws and regulations governing the business in which the foreign (other state) credit union or subsidiary is engaged.

(c) This section creates and authorizes an exempt class of persons pursuant to Section 1 of Article XV of the California Constitution.

(d) This section does not authorize a foreign (other state) credit union or any subsidiary to charge an interest rate on a loan or forbearance in excess of any limitation that exists under the laws of its home state.