<Li> Boulder became a sanctuary city in 2017 . </Li> <Li> Denver does not identify as a sanctuary city . The Denver Post reports: "The city doesn't have an ordinance staking out a claim or barring information - sharing with federal officials about a person's immigration status, unlike some cities . But it is among cities that don't enforce immigration laws or honor federal' detainer' requests to hold immigrants with suspect legal status in jail past their release dates . </Li> <Li> Estes Park police chief Wes Kufeld stated that, "As far as day - to - day policing, people are not required to provide proof of immigration status, and our officers are not required by ICE to check immigration status, nor to conduct sweeps for undocumented individuals . So, we don't do these things ." He added that town police do assist ICE in the arrest and detainment of any illegal immigrant suspected of a felony . </Li> <Ul> <Li> Hartford passed an ordinance providing services to all residents regardless of their immigration in 2008 . Said ordinance also prohibits that police from detaining individuals based solely on their immigration status or inquiring as to their immigration status . In 2016, the ordinance was amended to declare that Hartford is a "Sanctuary City", though the term itself does not have an established legal meaning . </Li> <Li> In 2013, Connecticut passed a law that gives local law enforcement officers discretion to carry out immigration detainer requests, though only for suspected felons . </Li> <Li> On February 3, 2017, Middletown, CT declared itself a sanctuary city . This was in direct response to President Trump's executive order . Said Middletown's mayor, "We don't just take orders from the President of the United States" </Li> </Ul>

What are the names of the sanctuary cities