President Donald Trump’s administration went to court Thursday to challenge sanctuary policies in the state of Illinois, Cook County and the city of Chicago that limit the powers of state and local police to assist federal law enforcement on immigration-related matters.

The suit asserts that sanctuary laws in Chicago, Cook County and Illinois have obstructed federal efforts to enforce immigration policy.

In its lawsuit, filed Thursday, the U.S. Department of Justice says Chicago’s Welcoming City Act, Cook County’s Ordinance 11-O-73 and Illinois’ Way Forward Act allegedly discriminate against the