Proposition 209 is a California ballot proposition which, upon approval in November 1996, amended the state constitution to prohibit state governmental institutions from considering race, sex, or ethnicity, specifically in the areas of public employment, public contracting, and public education. Modeled on the Civil Rights Act of 1964, the California Civil Rights Initiative was authored by two California academics, Glynn Custred and Tom Wood. It was the first electoral test of affirmative action policies in North America. It passed with 55% in favor to 45% opposed, thereby banning affirmative action in the state's public sector.

In the United States, affirmative action consists of government-mandated, government-approved, and voluntary private programs granting special consideration to groups considered or classified as historically excluded, specifically racial minorities and women. These programs tend to focus on access to education and employment in order to redress the disadvantages associated with past and present discrimination. Another goal of affirmative action policies is to ensure that public institutions, such as universities, hospitals, and police forces, are more representative of the populations they serve.