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.

Illinois participated in one court battle with the Trump administration Thursday when a federal judge temporarily blocked enforcement of an executive order that sought to end “birthright citizenship” under the U.S. Constitution.

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