San Francisco is suing the Trump administration over its crackdown on cities with sanctuary policies that prohibit local law enforcement from aiding U.S. Immigration and Customs Enforcement (ICE) in arresting undocumented immigrants.

Some local officials are pushing back against the federal government’s assertion that they must help ICE with its deportation campaign.

The City of San Francisco is leading a lawsuit against the Trump administration over its crackdown on sanctuary cities and states and its threat to cut off federal funding.

The threats of defunding are especially alarming for cities like San Francisco, where services such as Bay Area Rapid Transit are starting at a fiscal cliff. San Francisco and Santa Clara could potentially lose billions of dollars in funding for necessary services, said Chiu and Tony LoPresti, who represents Santa Clara County.

San Francisco City Atty. David Chiu is filing a federal lawsuit against the Trump administration over the threatened crackdown on sanctuary cities.

A coalition of U.S. cities and counties on Friday filed a lawsuit challenging President Donald Trump's executive order seeking to force so-called sanctuary jurisdictions to cooperate with his immigration crackdown and mass deportations.

San Francisco's city attorney announced Friday the city is suing the Trump administration after the president signed an executive order to withhold federal aid to cities that don't comply with his immigration policies.