At a Glance
- San Diego accuses federal agencies of trespassing on city land near the border
- Marines installing razor wire in Marron Valley since December without permits
- City seeks court order to halt construction and restore damaged habitats
- Why it matters: The case pits local environmental protections against federal border enforcement tactics
San Diego is taking the federal government to court over a razor-wire fence the city says is damaging protected land and blocking access to its own property.
The Legal Challenge
The City Attorney’s Office filed suit Monday in federal court, naming the Department of Homeland Security and Department of Defense as defendants. City lawyers contend the installation of concertina wire by U.S. Marines on city-owned land in Marron Valley amounts to unlawful trespass.
According to the complaint, crews began erecting the barrier in December without city permission. The fencing has:
- Blocked city staff from managing conservation areas
- Damaged sensitive plant and wildlife habitats
- Continued to expand despite local objections
Environmental Impact
The lawsuit argues the project threatens protected ecosystems the city is legally bound to preserve. Construction has already scarred the landscape, and officials warn further damage is imminent if the work proceeds.
City Attorney Heather Ferbert declared:
> “The city of San Diego will not allow federal agencies to disregard the law and damage city property. We are taking decisive action to protect sensitive habitats, uphold environmental commitments and ensure that the rights and resources of our community are respected.”
What the City Wants

San Diego is asking a federal judge to:
- Issue an immediate injunction stopping all work
- Order removal of the razor wire
- Restore damaged areas to original condition
- Bar federal personnel from re-entering without city approval
Key Takeaways
- Federal agencies installed border razor wire on city land without permits
- City says the project violates environmental protections and property rights
- San Diego seeks court intervention to halt construction and repair damage
- The outcome could set precedent for local control over federal border activities
The case highlights growing tension between local governments and federal authorities over border enforcement methods.

