A sanctuary city is one that obstructs (directly or indirectly) the enforcement of federal immigration laws.

http://www.apsanlaw.com/law-246.List-of-Sanctuary-cities.htm...

Since this list is most of your bigger more liberal cities (LA, SF, NYC), I do wonder what it means to cut off all federal funding to those cities.

I live by one of those cities, and there are indeed a lot of visa overstayers living there.

The prospect of those people being too scared to call 911 if they witness a crime is something I am decidedly NOT looking forward to.

Hopefully we can crack down on employers so that these visa over-stayers don't stay long enough for that to happen.

Basically the federal government says "Round these people up, an oh by the way do it on your own dime." These cities basically say no, we're not going to pay for that.

From Google: "A sanctuary city is a city in the United States or Canada that adopts local policies designed to not prosecute people solely for being an undocumented individual in the country in which they are currently living. These practices can be by law (de jure) or they can be in fact (de facto)."

Had to google that one myself. https://en.wikipedia.org/wiki/Sanctuary_city

Wait, so he'll be cutting all federal funding to cities like New York, LA and San Francisco?

I'm just guessing, but I imagine it means all federal funding related to immigration enforcement... not all federal funding.

As long as they remain sanctuary cities, yes.

It's quite a long list of cities (sadly the only sources I can find seem to be anti-immigration - http://cis.org/Sanctuary-Cities-Map)