Mayor Rahm Emanuel today announced that a federal judge granted a nationwide preliminary injunction against Attorney General Sessions because of new conditions the Trump Justice Department attempted to impose on the Byrne Memorial Justice Assistance Grant, which provides critical public safety funding. The ruling was made in a federal lawsuit the City filed to prevent President Trump's Justice Department from requiring grantees to comply with unrelated and unlawful grant conditions that would have required Chicago to assist with Federal immigration enforcement.
https://www.cityofchicago.org/city/en/depts/mayor/press_room/press_releases/2017/september/PreliminaryInjunction.html