Stop Dangerous Sanctuary Cities Act

This bill restricts federal funding for state and local governments that qualify as "sanctuary jurisdictions" under its definition. A sanctuary jurisdiction is defined as any state or local area that prohibits sharing immigration status information or refusing to comply with federal immigration detainers (with an exception for crime victims/witnesses). The bill blocks funding for Economic Development Administration grants and Community Development Block Grants if projects are located in such jurisdictions or if recipients become sanctuary jurisdictions during the grant period. Recipients must return funds if they become sanctuary jurisdictions, and the U.S. government will reallocate those funds to non-sanctuary areas.