Federal Appeals Court Sides With Trump, Blocks California Law Forcing ICE Agents to Display Identification

President Trump’s administration secured a major legal victory Wednesday after a federal appeals court blocked California from enforcing a law requiring Immigration and Customs Enforcement agents and other federal officers to display visible identification while conducting operations.

The unanimous ruling from the U.S. Court of Appeals for the Ninth Circuit dealt a significant setback to Democratic Gov. Gavin Newsom and California lawmakers, who had sought to impose additional identification requirements on federal immigration authorities.

The three-judge panel concluded that California’s legislation violated the Constitution’s Supremacy Clause by attempting to regulate how federal officers perform their official duties without authorization from Congress.

The decision reverses an earlier ruling by a federal district judge who had declined to block the identification requirement.

At the center of the dispute is California’s No Vigilantes Act, also known as Senate Bill 805, which Newsom signed into law in September 2025.

The legislation required law enforcement officers working without uniforms to visibly display identification showing their agency and either their name or badge number while performing enforcement duties.

Although the requirement applied broadly to law enforcement personnel, it was introduced amid growing tensions between California officials and the Trump administration over federal immigration operations.

State lawmakers argued that the measure was necessary to ensure that members of the public could distinguish legitimate law enforcement officers from individuals impersonating federal agents.

Supporters also maintained that visible identification would increase transparency and accountability during immigration arrests.

The Trump administration challenged the law, arguing that California had no constitutional authority to dictate identification procedures for federal personnel carrying out federal responsibilities.

Federal attorneys also raised concerns about officer safety, warning that additional identification requirements could expose immigration agents to harassment, threats and attempts to reveal their personal information.

The Justice Department filed suit against California and Newsom in November 2025, seeking to prevent the state from enforcing the disputed requirements.

The case eventually reached Senior U.S. District Judge Christina Snyder, who initially allowed the identification provision to remain in effect while blocking a separate California law restricting face coverings worn by law enforcement officers.

The federal government appealed the identification ruling, maintaining that the lower court had failed to properly apply constitutional protections governing federal operations.

In April, the Ninth Circuit temporarily prevented California from enforcing the identification requirement while the appeal proceeded.

Wednesday’s decision went further, directing the district court to issue a preliminary injunction against enforcement of the law.

Writing for the unanimous panel, Judge Mark Bennett concluded that California’s identification mandate directly interfered with the federal government’s authority to determine how its officers conduct official operations.

The court emphasized that states cannot impose direct regulations on federal agencies simply because those regulations also apply to state or local authorities.

Bennett explained that the constitutional problem existed regardless of whether California’s requirements created substantial practical difficulties for federal officers.

The panel determined that the federal government was certain to succeed on its constitutional challenge to the disputed provision.

The decision relied heavily on the principle of intergovernmental immunity, which generally prevents states from directly controlling the operations of the federal government without congressional authorization.

Under that doctrine, federal agencies retain authority over their own official activities, subject to federal law and constitutional limitations.

The court found that California’s legislation crossed that boundary by attempting to establish mandatory identification procedures for federal law enforcement officers.

The panel included Bennett and Judge Daniel Collins, both appointed by President Trump, along with Judge Jacqueline Nguyen, who was appointed by former President Barack Obama.

All three judges agreed that California could not enforce the challenged provision against federal agencies and their personnel.

The unanimous decision is particularly notable because the Ninth Circuit has frequently been involved in major legal disputes over immigration enforcement and the relationship between state and federal authority.

California officials had defended the identification law as a reasonable public safety measure rather than an effort to obstruct immigration enforcement.

The state argued that requiring officers to identify themselves would help prevent confusion during law enforcement encounters and protect residents from individuals falsely claiming to possess government authority.

California’s attorneys also maintained that the identification requirement was comparable to generally applicable public safety regulations that federal personnel may encounter while working within a state.

The appeals court rejected that argument, concluding that the legislation specifically regulated the manner in which federal officers perform their governmental responsibilities.

The judges distinguished California’s law from ordinary state regulations that affect federal employees incidentally.

Instead, the court determined that the identification mandate attempted to control the conditions under which federal law enforcement activities could take place.

That distinction proved central to the administration’s legal victory.

The dispute developed during a period of heightened immigration enforcement under President Trump, whose administration has expanded efforts to locate, detain and remove individuals unlawfully present in the United States.

Federal immigration operations in California have repeatedly generated confrontations between enforcement personnel, protesters and local officials.

Some agents have worn face coverings during arrests and other operations, prompting criticism from Democratic lawmakers who argue that masked officers can create fear and confusion among residents.

Federal officials have defended the use of protective face coverings in certain circumstances, citing concerns about threats against agents and their families.

Those competing concerns led California lawmakers to approve two separate measures addressing federal law enforcement identification practices.

The No Vigilantes Act established visible identification requirements, while the No Secret Police Act sought to restrict the use of masks by certain law enforcement personnel.

The mask restriction encountered its own constitutional problems earlier this year.

Judge Snyder blocked that measure after determining that its exemptions for state law enforcement personnel created unequal treatment between state and federal officers.

The identification requirement initially survived the lower court’s review because it applied more broadly.

However, the Ninth Circuit concluded that applying a rule equally to state and federal officers does not automatically make direct regulation of federal operations constitutional.

Wednesday’s ruling therefore represents another setback for California’s attempts to impose state-level restrictions on federal immigration enforcement practices.

The decision could also influence similar disputes elsewhere in the country.

Several states have considered or enacted legislation addressing the identification and masking practices of federal law enforcement officers.

Maryland, for example, recently became the subject of a Justice Department lawsuit over legislation restricting face coverings and requiring visible identification.

The Trump administration has argued that such measures interfere with federal authority and could expose officers to additional safety risks.

State officials supporting the restrictions contend that public accountability and transparency are legitimate concerns, particularly when armed officers conduct operations in residential neighborhoods and public spaces.

The Ninth Circuit’s decision provides a significant legal precedent for evaluating those competing arguments.

However, the ruling specifically addresses California’s identification requirement and does not automatically invalidate every related law adopted by other states.

The decision also does not prohibit federal agencies from voluntarily requiring their personnel to display identification.

Instead, it limits California’s authority to impose those requirements directly on federal officers.

Federal agencies remain subject to applicable federal identification policies, constitutional protections and other legal requirements governing law enforcement conduct.

California Attorney General Rob Bonta, whose office defended the legislation, could seek further review of the decision.

The state may request reconsideration by a larger panel of Ninth Circuit judges or pursue additional appellate options.

For now, the ruling prevents California from enforcing the challenged identification mandate against federal law enforcement personnel.

The appeals court’s order directs the lower court to issue a preliminary injunction, meaning the decision is not yet a final judgment resolving every aspect of the underlying lawsuit.

Nevertheless, the panel’s conclusion that the federal government is certain to prevail on the constitutional issue represents a substantial legal obstacle for California.

The ruling arrives as President Trump continues defending his administration’s immigration enforcement policies against challenges from Democratic-led states.

California has repeatedly clashed with Washington over immigration arrests, cooperation between local authorities and federal agents, and the legal boundaries of state involvement in immigration enforcement.

Newsom and other Democratic officials have argued that California has a responsibility to protect residents and establish safeguards for law enforcement encounters within the state.

The Trump administration maintains that federal immigration laws must be enforced nationwide and that states cannot dictate the operational procedures of federal agencies.

Wednesday’s ruling reinforces the constitutional distinction between state authority and the federal government’s ability to carry out its responsibilities.

For the Justice Department, the decision represents an important victory in its ongoing legal battles over immigration enforcement.

For California, it raises additional questions about which measures state lawmakers can lawfully adopt to regulate encounters involving federal agents.

As the legal dispute continues, the central constitutional issue remains whether a state can impose its own operational requirements on federal officers without congressional authorization.

The Ninth Circuit’s answer was clear: California cannot directly regulate federal law enforcement operations through the identification mandate challenged in this case.

The ruling leaves the Trump administration free from California’s disputed identification requirement while preserving the broader debate over transparency, officer safety and accountability during federal immigration operations.