Cal. Bus. & Prof. Code § 23428.18

For purposes of this article, “club” also means any labor council which is chartered by a national labor organization having affiliates in each state of the United States, consists of delegates from not less than 20 separately chartered affiliated labor organizations, as defined by the National Labor Relations Act, the combined membership of which is not less than 7,000 persons, and owns or leases a building of not less than 3,000 square feet which is used by the delegates, or members of affiliated labor organizations, or both, for their social activities. No labor council which makes any discrimination, distinction, or restriction against any person on account of such person’s age, sex, color, race, religion, ancestry, or national origin shall be licensed pursuant to this section.