Stop Dangerous Sanctuary Cities Act

This bill defines "sanctuary jurisdiction" as a state or local government that prohibits sharing immigration status information with federal authorities or refuses to comply with federal immigration detainers (requests to hold individuals for immigration enforcement). It makes such jurisdictions ineligible for specific federal grants, including Economic Development Administration funds and Community Development Block Grants, by requiring that grant projects be located in areas not designated as sanctuary jurisdictions. Jurisdictions found to be sanctuary jurisdictions must return any grant funds received during the period they were designated as such and cannot receive future funds until compliance is achieved. The bill takes effect on October 1, 2025.