I wish this was one of the major talking points about the problem with sanctuary city's.
The politicians of these cities are only doing this for themselves and their career. How?
They create an image of themselves being a kind and compassionate leader.
They get to ask the legal citizens of the city for more money and shame them if they don't cough it up.
They get to ask the federal govt for more money because they are running out of money. (Yes, due to dumping millions in the care of the Criminal Aliens)
They get more voters from the Criminal Aliens depending on how the elections are run in their states.
If the legal rightful citizens of these city's would realize the local politicians they voted for are taking their tax money that is normally earmarked for them and spending it on criminals. The uproar would be tremendous. As it stands right now, the federal govt has to threaten these politicians with holding back federal money to get them to answer for their devious acts.