Stop Dangerous Sanctuary Cities Act

The Stop Dangerous Sanctuary Cities Act would dramatically reshape how state and local authorities interact with federal immigration enforcement. It would require jurisdictions that comply with DHS detainers to be treated as DHS agents, with the same authority as federal officers for actions taken to fulfill those detainers. It also provides liability protections for states and localities that act in compliance with detainers, while preserving a limit on immunity for rights violations. The bill would define “sanctuary jurisdictions” as those that prohibit or restrict sharing immigration status information or complying with DHS detainer requests, with a carve-out for policies that protect victims or witnesses. Importantly, it would bar sanctuary jurisdictions from receiving several categories of federal funding (economic development, community development, and related training) and would trigger refund and reallocation of funds if a jurisdiction is deemed sanctuary. The changes would take effect October 1, 2025. In short, the bill ties local or state cooperation with DHS detainers to federal agency status and liability rules, and it uses funding eligibility as a lever to push jurisdictions to align with federal immigration enforcement practices.