California Code, Insurance Code - INS § 1323

Concurrently with the filing of the declaration provided for by the terms of section 1322 the attorney shall file with the commissioner an instrument in writing executed by him, providing that after the issuance of the certificate of authority actions against the exchange may be brought either in the county in which the person or property insured is located, or in which the exchange has its principal office or place of business in the State;  and also providing that service of process may be had upon the attorney-in-fact or upon the commissioner in suits against the exchange.