Judge Bars Warrantless ICE Arrests Across Southern California

A federal judge unsealed an injunction requiring immigration agents to document escape risk before any warrantless arrest in seven Southern California counties.

U.S. District Judge Maame Ewusi-Mensah Frimpong issued a preliminary injunction, granted September 2 and unsealed Wednesday, blocking federal immigration officers from making warrantless civil immigration arrests in Southern California unless they first determine the person is likely to escape before a warrant can be obtained. The order applies across the Central District of California, covering Los Angeles, Orange, Riverside, San Bernardino, Ventura, Santa Barbara and San Luis Obispo counties. Agents must consider the totality of circumstances known to them before arresting, and must document the specific, particularized facts supporting their probable-cause finding that the person was likely to flee. The judge also barred agents from relying on a January memo from former acting ICE director Todd Lyons that treated being undocumented alone as proof of escape risk, and she denied the government's request to delay the order two weeks while it weighs an appeal.

Under federal law, immigration officers may arrest someone without a warrant only when they have probable cause both that the person is in the country unlawfully and that they are likely to escape before a warrant can be obtained. The ruling finds the government has an ongoing policy and practice of skipping that analysis entirely — a reversal of how enforcement has operated across Southern California during an unprecedented enforcement surge. Los Angeles Mayor Karen Bass called the ruling an important protection against warrantless arrests she said had racially targeted Angelenos, while the ACLU's Mayra Joachin said it should end hundreds of unlawful arrests. The Department of Homeland Security pushed back, saying ICE has authority for lawful arrests under 8 USC 1357 and that the Supreme Court has vindicated its practices.

Plaintiffs built the case from body-camera footage, agent depositions, text messages and arrest narratives obtained in discovery. According to CalMatters, in 80 percent of arrest reports reviewed, agents either made no flight-risk assessment or used boilerplate language. In one case, the government claimed a man was 'running away' before agents questioned him, but video showed him walking at a normal pace while texting on his phone. Another worker at the Handy J car wash, a lawful permanent resident identified as A.T., was handcuffed within ten seconds and later released — his arrest report described 'sudden moves' the footage does not appear to show. Attorneys also cited footage of an agent saying he did not care if someone had a court date, calling them a 'custody redetermination' even after an immigration judge had found no flight risk.

The Los Angeles order joins a growing set of judicial rebukes: federal judges in Portland, Colorado, Washington, D.C., and the Eastern District of California have already blocked similar warrantless arrest practices, according to the Associated Press reporting carried by ABC News. Courts in two of those cases later found agents kept conducting warrantless arrests anyway, which is why advocates say they will closely monitor compliance. The suit, filed last fall by the ACLU of Southern California, Public Counsel and Los Angeles immigrant advocacy groups, also sought to restrict roving patrols based on race, language and occupation; Frimpong's earlier temporary restraining order on those operations was lifted by the Supreme Court last September, with Justice Brett Kavanaugh writing that apparent ethnicity could be a relevant factor when combined with other information.

Enforcement activity remains intense even as the headline-grabbing raids have quieted. According to CalMatters, arrests reached their highest level of the second Trump administration in July, with nearly 50,000 arrests nationwide per the Deportation Data Project, and in California agents arrested more than 15 percent more people than during the same period last year. The documentation requirement could prove decisive: without a written, particularized escape-risk analysis, the government cannot show an arrest was proper, as Frimpong wrote in her order. For communities that have seen arrests at workplaces, car washes and Home Depot parking lots, the order directly targets the arrest-first, verify-later pattern captured in agents' own body-camera footage.

The order takes effect immediately after Frimpong rejected the government's request for a two-week stay, writing that the government 'cannot reasonably assert that it is harmed in any legally cognizable sense' by being ordered to follow the law. That framing leaves an appeal as the government's remaining option, and the ruling is preliminary — the underlying litigation continues. The ACLU of Southern California said it expects the federal government to abide by the order and will monitor compliance, mindful that judges in two other jurisdictions found agents continued the practice despite similar prohibitions. Advocates also noted the judge declined to require agents to document community-ties factors specifically or to record encounters that do not end in arrest, leaving some room for dispute over what adequate compliance looks like.