Donald Trump to Cut Off Payments to Sanctuary Cities, States

[maxsolomon]

11. I've lived in a Sanctuary City for years.

It basically means Seattle doesn't ask immigrants about residency status - unless it's appropriate.

4. Why not be more cooperative with federal immigration agents?
The City does not have jurisdiction over deportations. The U.S. Department of Homeland Security is charged with enforcing civil federal immigration violations, which includes deportations. Police officers within the city will ask for your status if there is reasonable suspicion a felony was committed or knowledge that a person was previously deported.

This "don't ask" policy allows our police department to build strong relationships within immigrant and refugee communities, which makes them safer. Crime is statistically significantly lower in so-called "sanctuary counties" compared to "non-sanctuary counties," and economies are stronger in so-called "sanctuary counties" compared to "non-sanctuary counties."

https://www.seattle.gov/iandraffairs/issues-and-policies/seattle-immigration-policy-faq