Which cities, counties and states in the US are ‘sanctuary’ jurisdictions?

"Sanctuary" jurisdictions, which do not cooperate with Immigration and Customs Enforcement (ICE) detainers as a policy, are once again under the spotlight after a slew of violent crimes were committed by illegal immigrants, who were released despite having a detainer lodged against them.

When ICE believes a removable illegal immigrant has been arrested on criminal charges, it will lodge a detainer -- a request that they be notified before the immigrant is released from custody and to keep them in custody until ICE can take custody of them.

But sanctuary jurisdictions generally...