1994 California Proposition 187
California Proposition 187 (also known as the Save Our State (SOS) initiative) was a 1994 ballot initiative to establish a state-run citizenship screening system and prohibit undocumented immigrants from using non-emergency health care, public education, and other services in the State of California. Voters enacted the proposed law at a referendum on November 8, 1994.
Source: Wikipedia — 1994 California Proposition 187 (CC BY-SA 4.0)