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#Posse Comitatus Act

The 1878 federal law prohibiting the use of the military for domestic law enforcement without congressional authorization. Incidents involve military deployments for immigration enforcement or protest suppression that may violate this statute.

1 incident

Updated September 2, 2025 Military Overreach
Serious Rights Violation Ongoing

Military Deployments at US-Mexico Border in Violation of Posse Comitatus Act

Over 10,000 troops were deployed to the US-Mexico border for immigration enforcement. A federal judge found the administration 'willfully' violated the Posse Comitatus Act -- a foundational law separating military and civilian law enforcement dating to Reconstruction.

Sources
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Posse Comitatus Actmilitary deploymentborder enforcementcivil-military separationNational Guard