Below is a list of cities and counties that have sanctuary policies, according to a report by the Congressional Research Service from June 2007.
Rio Arriba County
New York City
There are two statewide policies regarding providing sanctuary for illegal aliens:
In May 2003, Alaska's state legislature passed a joint resolution prohibiting state agencies from using resources or institutions for the purpose of enforcing federal immigration laws.
In 1987, Oregon passed a law that prohibits state and local law enforcement agencies from using agency moneys, equipment or personnel for the purpose of detecting or apprehending foreign citizens based on violation of federal immigration law. Oregon law, however, does permit their law enforcement officers to exchange information with federal authorities to verify the immigration status of an individual arrested for criminal offenses.
Most cities that are considered sanctuary cities have adopted a "don't ask-don't tell" policy where they don't require their employees, including law enforcement officers, to report to federal officials aliens who may be illegally present in the country. Localities, and in some cases individual police departments, in such areas that are considered "sanctuary cities," have utilized various mechanisms to ensure that unauthorized aliens who may be present in their jurisdiction illegally are not turned in to federal authorities. Some municipalities address the issue through resolutions, executive orders or city ordinances, while many police departments address the issues through special orders, departmental policy and general order.