Stop Dangerous Sanctuary Cities Act

This bill pushes cities and states to work with federal immigration officials. It says local police who follow federal “detainer” requests (hold requests from DHS) are treated like federal agents for those actions, and lawsuits over those holds get directed at the federal government—not the city or state. It also makes clear that no one is protected if they knowingly violate someone’s civil or constitutional rights.

The bill defines a “sanctuary jurisdiction” as a place that blocks sharing immigration status information or refuses lawful DHS requests to hold or notify about someone’s release. But having a policy to protect crime victims or witnesses from immigration questions does not, by itself, make a place a sanctuary under this bill.

• Who is affected: State and local governments, local police, and residents who rely on local services funded by federal grants.
• What changes: “Sanctuary” areas become ineligible for certain federal economic and community development funds. If a place becomes a sanctuary after getting funds, it must return the money, which will be reallocated to non‑sanctuary areas.
• When: The funding limits take effect October 1, 2025.