While the exact specifications can vary, sanctuary city policies overall limit how much local law enforcement officials can comply with federal immigration authorities.
San Francisco, for example, passed an ordinance in 1989 that prohibits city employees, funds or resources from assisting Immigration and Customs Enforcement (ICE) in enforcing federal immigration law unless it’s required by state or federal law.
Jerry Brown signed the law that went into effect this year designating California as a “sanctuary state.” The law, in part, bars police from asking people about their immigration status or participating in some federal immigration enforcement activities.
The Justice Department filed suit to block state laws from extending protections to people living in the U.S. illegally.
The DOJ is challenging three California laws that, in part, prohibit police from asking people about their citizenship status or participating in federal immigration enforcement activities.