
The Trump administration's move to deploy federalized National Guard troops to major U.S. cities for domestic law enforcement has triggered a significant constitutional clash with state and local governments. Citing concerns over crime and immigration, the administration's actions have been met with swift legal challenges, culminating in court orders blocking the deployments in multiple jurisdictions.
In California, Governor Gavin Newsom and Attorney General Rob Bonta have been at the forefront of this legal battle. The state secured a permanent injunction from a federal judge, blocking what it called an unlawful deployment. The court order stated that the administration's use of the National Guard and U.S. Marines in Los Angeles violated the Posse Comitatus Act of 1878, which prohibits using the military for domestic law enforcement except under specific, congressionally authorized circumstances. The judge noted there was no “rebellion” to justify the federal intervention. Building on this, California is actively challenging the President’s federalization and deployment of its Guard members.
This legal resistance is not isolated to California. Other Democratic-led cities and states have taken similar steps. In Washington D.C., a federal judge ordered the Trump administration to end its deployment, ruling it unconstitutional. Meanwhile, the state of Illinois and the city of Chicago jointly filed a lawsuit to prevent federal troops from being sent to their jurisdictions. Legal experts argue that the administration is testing the limits of presidential authority by invoking Title 10, a statute that allows the president to bring the Guard into federal service without state approval under rare circumstances, such as an insurrection.
The core of the conflict revolves around the interpretation of federal power versus states' rights. While the administration, under President Trump and Secretary of Defense Pete Hegseth, has justified the deployments as necessary for enforcing federal law, opponents see it as a dangerous overreach. Attorney General Bonta’s office emphasized the court's decision as a crucial defense against federal overreach, securing a permanent injunction to prevent unlawful deployment and upholding the fundamental separation of military and civilian law enforcement.



