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.

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

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.