California Code, Civil Code - CIV § 53.7

(a) A statute, ordinance, or other state or local rule, regulation, or enactment shall not deny a minority group political structure equal protection of the law by altering, restructuring, or reordering the policy decisionmaking process in a manner that burdens the ability of members of the minority group to effect the enactment of future legislation, solely with respect to a matter that inures primarily to the benefit of, or is primarily of interest to, one or more minority groups.

(c) A statute, ordinance, or other state or local rule, regulation, or enactment shall be determined valid in an action brought pursuant to this section, only upon a showing by the government that the burden imposed by the statute, ordinance, or other state or local rule, regulation, or enactment satisfies both of the following criteria: