California Code, Insurance Code - INS § 133

(a) No risk retention group shall be required or permitted to join or contribute financially to any insurance insolvency guaranty fund, or similar mechanism, in this state, nor shall any risk retention group, or its insureds or claimants against its insureds, receive any benefit from any such fund for claims arising under the insurance policies issued by that risk retention group.

(b) When a purchasing group obtains insurance covering its members' risks from an insurer not authorized in this state or a risk retention group, no such risks, wherever located, shall be covered by any insurance guaranty fund or similar mechanism in this state.

(c) When a purchasing group obtains insurance covering its members' risks from an authorized admitted insurer, only risks located in this state shall be covered by the state insurance guaranty fund.

(d) A risk retention group shall not participate in this state's joint underwriting associations, California Automobile Assigned Risk Plan, Fair Access to Insurance Requirements Plan, and market assistance plans.