Across the United States, police have enhanced their ability to fight crime by deciding that they will not conduct irrelevant interrogations about immigration status while conducting criminal investigations. ACLU opposes congressional efforts to punish cities that have tried to improve public safety by taking commonsense measures to build community trust and ensure that crime victims cooperate with the police.

About Immigration Detainers



NYCLU Praises New Sanctuary City Guidance from Attorney General (January 19, 2017)


ACLU Letter Opposing the Stop Dangerous Sanctuary Cities Act (S. 3100) (July 12, 2016)


Sign-On Letter Urging Congress to Oppose Immigration Policy Riders in FY2016 Appropriations Bill (November 20,2015)

ACLU Comment on US Senate Vote on ‘Sanctuary’ Policies Bill (October 20, 2015)

ACLU Vote Recommendation Opposing S. 2146, the “Stop Sanctuary Policies and Protect Americans Act" (October 19, 2015)

Sign-On Letter Opposing S. 2146, the “Stop Sanctuary Policies and Protect Americans Act” (October 19, 2015)

35 Criminal Justice Organizations Oppose New Mandatory Minimum Legislation for Illegal Reentry (S.1762/H.R.3011/S.1812) (September 14, 2015)

ACLU of Iowa Letter to Sen. Grassley Opposing Grassley/Vitter Substitute Amendment to “Stop Sanctuary Cities Act” (S. 1814) (September 3,2015)

Sign-On Letter Opposing Grassley-Vitter Substitute Amendment to S. 1814, the “Stop Sanctuary Cities Act” (September 1, 2015)

Compilation of Recent Cases of U.S. Citizens Subjected to Unlawful Immigration Detainers (August 26, 2015)

Compilation of Sheriff’s and Mayors’ Statements on Illegality of DHS Immigration Detainer Requests and Need for Judicial Warrants (August 24, 2015)

Sign-On Letter to Senate Opposing S. 1814, the “Stop Sanctuary Cities Act" (August 4, 2015)

Joanne Lin Discusses 'Sanctuary Cities' on Capital Download (August 2, 2015)

ACLU Comment on US House Passage of 'Sanctuary Cities' Bill (July 23, 2015)

ACLU Statement for Immigration & Border Subcommittee of House Judiciary Committee Hearing (July 23, 2015)

Blog: A Bill Up for a House Vote Today to Punish 'Sanctuary Cities' Won't  Improve Public Safety. It Will Undermine It (July 23, 2015)

Sign-On Letter Opposing H.R. 3009  (July 22, 2015)

Sign-On Letter to Members of Congress re: Local-State Law Enforcement Community Trust (July 20, 2015)

Los Angeles Times op-ed by ACLU of Southern California: “ICE vs. the Constitution”  (July 13, 2015)


Stay Informed