This is just my opinion, but those cities and states that allow them to break the laws (immigration in this case) should consider if they can afford to continue to break laws to support the population they invited. Ergo, essential human needs are their responsibility, i.e., food, clothing, shelter and so on. We need to support all US citizens, therefore the US government would need to do open announcements to those cities that the US will not insure or ensure their safety or well being. In other words, these cities would be on their own. After all, these mayors sing the tune that i******s pay taxes..... they should be able to manage without outside tax income. So, I do not see how they could object.

As for a mass exodus from these cities..... I do not care if they leave these cities ghost towns or become populated by either muslim or hispanic.... really, it is their towns. And this would be good in the long term, especially if the cities decide that they want to change their minds and obey laws. ICE could go in with buses to get those "undocumented" individuals to the closest deportation judge and on their way back to their native countries.

I would never encourage the invasion of Canada. If muslims/latinos decided to "invade" them, it would be up to their immigration control and border agents. I read that they (Canada) will not accept more than 300,000 immigrants (for any reason) each year. I imagine that they have controls established to manage their borders. Perhaps if this happened then Canadians would be more empathetic to what we are facing.

You are right, it happened in 2018... In a 2-1 decision, the 9th Circuit Court of Appeals said Trump's January 2017 executive order, cutting off federal funds to sanctuary cities, was unconstitutional. But the court also ruled that a lower court went too far when it blocked the order nationwide.

"Absent congressional authorization, the administration may not redistribute or withhold properly appropriated funds in order to effectuate its own policy goals," Chief Judge Sidney Thomas wrote for the majority.

Justice Department spokesman Devin O'Malley said the executive order was a legal use of the president's power. He called the 9th Circuit's decision a victory for "criminal aliens in California, who can continue to commit crimes knowing that the state’s leadership will protect them from federal immigration officers whose job it is to hold them accountable and remove them from the country."https://www.usatoday.com/story/news/politics/2018/08/01/sanctuary-cities-trump-cant-pull-federal-funds-court-rules/883354002/

I hope that the WH appealed the decision.