DENVER — The American Civil Liberties Union (ACLU) of Colorado is suing the Trump administration over what it calls illegal, warrantless arrests made by US Immigration and Customs Enforcement (ICE).

The lawsuit was filed on behalf of immigrants in Colorado, including Caroline Dias Goncalves .

On June 5, Dias Goncalves, a Brazilian national and University of Utah student, was stopped by a Mesa County sheriff's deputy on Interstate 70 for following a truck too closely.

Attorney General Phil Weiser’s office said Dias-Goncalves had an expired visa but no criminal history, and the deputy used a Signal group chat with other law enforcement agencies to alert ICE agents of Dias Goncalves’ location.

The deputy let Dias Goncalves go, but ICE detained her shortly afterwards. She then spent tw

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