*396 Opinion
The office of the Attorney General, representing the State of California (State), seeks a writ of mandate or prohibition and a stay preventing the trial court from compelling the State to be joined as a defendant in this lawsuit.
Penal Code section 326.5 defines what constitutes a legal bingo game and makes it a misdemeanor to conduct bingo games except in accordance with the statute. St. Mary’s Catholic Church (Church) and Selectro-Vision, Limited have brought a civil action against the City of National City (City) in the superior court, seeking declaratory relief and an injunction to prevent criminal prosecution of the Church’s contemplated use of Selectro-Vision’s electronic computer-controlled bingo system which permits playing 40 bingo cards simultaneously. Plaintiffs contend City has informed them the device is an illegal gambling device, based on two earlier opinions from the office of the Attorney General, and therefore the City will prosecute Church if it uses the device. (Those opinions are
At the suggestion of City, but without a formal joinder motion, the trial court ordered the State of California be joined as a defendant. The court also issued a temporary restraining order preventing City’s prosecution of Church for use of the so-called “Bingo Master System.” At the preliminary injunction hearing, the court denied the motion of the Attorney General on behalf of State to strike State as a party defendant. The court also issued a preliminary injunction.
State brings this writ petition, arguing the trial court has no power to compel its participation. It says the trial court made its ruling because interpretation of a state penal statute is involved and the office of the Attorney General has issued advisory opinions of some relevance to the issues. However, State says, these facts do not give it a substantial interest in the lawsuit so as to compel its unwilling participation. It points out the Attorney General is authorized and indeed obliged to issue advisory opinions to designated state and local officials (Gov. Code, § 12519), but those designated officials do not include superior court judges. Further, his opinions are only advisory and not binding in any event. (Gov. Code, § 12519,
supra; Moore
v.
Panish
(1982)
Although we admit to have concerns with the validity of the underlying lawsuit, no one has asked us to remove the lawsuit from the court calendar. We are only concerned with the issue of removal of the State of California as an unwilling defendant, We believe the trial court has exceeded its discretion, if not its powers, in compelling the Attorney General’s participation. Our decision to liberate the State here is influenced both by the lack of any specific authority for the court to order the State’s participation and also by the doctrine of separation of powers.
Starting with the question of authority for the court’s order, we note the well-established rule a court may not issue its writ to control the discretion of a public officer. (See generally 8 Witkin, Cal. Procedure (3d ed. 1985) Extraordinary Writs, §§ 70, 80, pp. 709-710, 720-721;
e.g., Larson
v.
City of Redondo Beach
(1972)
Put another way, a court cannot order a public officer to do something unless that officer has a plain duty to do it. Here, the office of the Attorney General has a general obligation to prepare advisory opinions but none to participate as advisor or amicus curiae, let alone defendant, in every lawsuit questioning the meaning of a state law. Accordingly, there is no basis for the court’s order to the State to make itself available.
The doctrine of separation of powers, expressed in California Constitution, article III, section 3, holds one branch of our tripartite government may not exercise powers delegated to another coordinate branch. Here, the question is whether the judiciary may properly tell a department of the executive branch to join in a lawsuit. Such trespass upon the internal management and policy decisions of the Attorney General’s office seems perilously close to the brink of unwarranted interference in violation of constitutional mandate.
To give some examples of the separation of powers doctrine, we know, from
State of South Dakota
v.
Brown
(1978)
Because of the inevitable overlap of powers among the governmental branches, no easy way exists to determine the legitimacy of one branch’s interference in another’s domain. (See generally
Laisne
v.
Cal. St. Bd. of Optometry
(1942)
An alternative writ or order to show cause would add nothing to the presentation. A peremptory writ is proper. (Code Civ. Proc., § 1088;
United Nuclear Corp.
v.
Superior Court
(1980)
Let a writ of mandate issue compelling the trial court to grant the Attorney General’s motion to strike the State of California as a party defendant.
Work, J., and Butler, J., concurred.
