California Public Interest Research Group (CALPIRG) is the 501(c)(4) advocacy arm of the California Public Interest Research Group Education Fund. It is the California state affiliate of the U.S. Public Interest Research Group (US-PIRG).
CALPIRG is also closely connected to the National Association of Organizations in the Public Interest (NAOPI), a 501(c)(4) controlling organization headed by Phelps. In 2003, CALPIRG’s bylaws were amended to reflect NAOPI’s control over its board of directors:
The original Board [of CALPIRG] may be expanded, vacancies on the Board may be filled, and directors may be removed from office with or without cause by a majority vote of the directors then in office, subject to the approval and consent of the Executive Committee or Board of the National Association of Organizations in the Public Interest, Inc. The National Association of Organizations in the Public Interest, Inc. may, by a two-thirds vote of its Board of Directors, expand, fill a vacancy, or remove a director(s) of the corporation from office with or without any action on the part of the Board of the corporation [CALPIRG].