California Code, Insurance Code - INS § 1872.6

(a) Preempt the authority of other law enforcement or licensing agencies to investigate and prosecute suspected violations of law.

(b) Prevent or prohibit a person from voluntarily disclosing any information concerning violations of this chapter to any law enforcement or licensing agency governed by the Business and Professions Code.

(c) Limit any of the powers granted to the department or the commissioner to investigate possible violations of the chapter and take appropriate action against wrongdoers.