The county has joined a statewide effort to push back on the lawsuit filed by the Trump administration that aims to invalidate California’s recent immigrant protection laws, which the administration deems unconstitutional. The City of Oakland, along with Los Angeles and Santa Clara counties, authored an amicus curiae brief—an informational document for the court—that opposes the suit, and Marin is among 23 jurisdictions that have signed onto the filing. The President and Attorney General Jeff Sessions have threatened to pull federal grant money from cities and states with sanctuary laws protecting undocumented immigrants. The suit against California, filed by the Justice Department in Federal District Court in Sacramento, is the first of its kind against a local or state government over its immigration policies. The disputed laws, which the Governor approved last year, include S.B. 54, the California Values Act, which limits cooperation between local law enforcement agencies and federal immigration authorities. Another, A.B. 459, prohibits businesses from voluntarily sharing information about workers with federal agents. And the third, A.B. 103, subjects local detention facilities to biannual inspections by the Attorney General’s office. “If immigrants fear that any interaction with the police may lead to deportation for themselves or a loved one, they will not willingly assist law enforcement, and public safety will suffer,” the amicus brief states. “Trust between law enforcement and the communities they are sworn to protect is weakened when peace officers are viewed as de facto immigration enforcers.” The brief also argues that the administration’s enforcement agenda prevents immigrants from participating in their communities and the economy, prevents them from accessing health care, and erodes trust in law enforcement. In Marin, there are estimated to be 16,000 undocumented immigrants, accounting for 6 percent of the population. The Board of Supervisors passed a resolution last March to uphold due process and protect the civil rights of local immigrants, even as citizens have criticized the Sheriff’s Office for speaking out against the county’s support of the recent laws and defending its collaboration with ICE.