If an undocumented immigrant is arrested by ICE in a "sanctuary city" (e.g., New York), and the local government refuses to hand them over on the grounds of "not cooperating with federal law enforcement," what implicit means will ICE use to exert pressure? Will it suspend federal funding related to immigration for that city, and is there any public policy document to support such operations?

If an undocumented immigrant is arrested by ICE in a "sanctuary city" (e.g., New York), and the local government refuses to hand them over on the grounds of "not cooperating with federal law enforcement," what implicit means will ICE use to exert pressure? Will it suspend federal funding related to immigration for that city, and is there any public policy document to support such operations?