President Donald Trump has said his administration is targeting dangerous criminals, but attorneys working with those detained in Chicago say many do not have criminal records. Attorneys say many arrests appear to flagrantly violate protections against unreasonable search and seizure.

The Justice Department sued the state of Illinois, the city of Chicago and other local jurisdictions alleging their laws are standing in the way of the Trump administration's increased immigration enforcement in the area,

The lawsuit argues that the U.S. Constitution’s Supremacy Clause “prohibits Illinois, Chicago, Cook County, and their officials from obstructing the Federal Government’s ability to enforce laws that Congress has enacted or to take actions entrusted to it by the Constitution.”