According to Wikipedia, in the United States and Canada, a sanctuary city is a city that limits its cooperation with the national government effort to enforce immigration law. A representative list of sanctuary cities in the US includes:includes Seattle, Portland, San Francisco, Los Angeles, San Diego, Phoenix, Salt Lake City, Denver, Dallas, Austin, Houston, Minneapolis, Chicago, Detroit, New York City, Baltimore, Washington DC and Miami. Two things that jump off this list are these are all Democrat voting and run cities and they are all high crime cities. President Trump has vowed to crack down on Sanctuary Cities ignoring federal law.