Those who opposed Proposition 71 included the Roman Catholic Church, Orange County Republicans, and the California Pro-Life Council, an affiliate of the National Right to Life Committee. Among the politicians in this group were State Senator Tom McClintock (R-Thousand Oaks) and Orange County Treasurer-Tax Collector John Moorlach. The Hollywood actor Mel Gibson also joined the efforts to defeat this initiative. Conservative groups, however, were not the only ones opposing Prop. 71; organizations such as the California Nurses Association (CNA), the Green Party, the Center for Genetics and Society, Our Bodies Ourselves, among others, were also against the initiative.