Bonus: Myths and Facts About Sanctuary Cities & Law Enforcement
![photo: [name] (CC BY-SA 2.0)](https://images.squarespace-cdn.com/content/v1/56c38a51b09f955575e21a21/1528167498041-WO9GGNL3T0UC6931BYTQ/1280px-Map_of_Sanctuary_Cities_and_Counties_in_the_United_States.svg.png)
President Trump says self-styled "sanctuary cities" are breaking the law. But are cities under any actual obligation to enforce federal immigration law? And is there any evidence for Trump's claim that sanctuary status is linked with higher incidence of crime? David answers these questions and explains why many local law enforcement agencies want nothing to do with immigration enforcement.