Cal. Food & Agric. Code § 6404

The secretary may enter into agreements with the regulatory officials of other states or the United States Department of Agriculture to provide for the application of various pest risk mitigation measures to the shipments of plants or bee colonies at the place of origin. Shipments entering the state in compliance with these agreements may be released upon arrival at ports of entry or terminals in this state without being held and inspected for compliance with standards and quarantine requirements.