California Code, Business and Professions Code - BPC § 22443

(b)(1) A person engaged in the business or acting in the capacity of an immigration consultant shall retain copies of all documents and forms of a client for not less than three years from the date of the last service to the client.

(2) Upon presentation of a written consent signed by a client, an immigration consultant shall provide a copy of the client file to law enforcement without a warrant or a subpoena.

(c)(1) A person engaged in the business or acting in the capacity of an immigration consultant shall return to a client all original documents, including, but not limited to, original birth certificates, rental agreements, utility bills, employment stubs, Department of Motor Vehicle licenses with dates of entry, and passports, that the client has provided to the consultant in support of the client's application.

(2) Any original document that does not need to be submitted to immigration authorities as an original document shall be returned by the immigration consultant immediately after making a copy or reproduction thereof.