Police And Illegal Immigration: What Our Neighbors Do

NPR: During the campaign, Donald Trump promised to punish "sanctuary cities" — jurisdictions which limit local law enforcement cooperation with federal immigration enforcement. Since the election, cities such as Chicago and San Francisco have doubled down on their sanctuary policies, saying local police need to build trust with communities, including people in the country illegally. Critics of sanctuary policies say the cities are fostering a sense of amnesty for people who break federal law.

It's a long-running argument, and it's not unique to the U.S. Our neighbors to the north and south have also been grappling with the question of police involvement with national immigration law.

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