California Code, Business and Professions Code - BPC § 6077

The rules of professional conduct adopted by the board, when approved by the Supreme Court, are binding upon all licensees of the State Bar.

For a willful breach of any of these rules, the State Bar Court has power to discipline attorneys by reproval, public or private, or to recommend to the Supreme Court the suspension from practice for a period not exceeding three years of licensees of the State Bar.