The office of Mayor Brandon Johnson said it was working with Illinois' governor and Cook County, home to Chicago, in “evaluating all of our legal options to protect the people of Chicago from unconstitutional federal overreach.

Mayor Brandon Johnson and other Illinois leaders spoke out Sunday as a U.S. official confirmed to ABC News the Pentagon is drafting plans for the potential use of National Guard troops in Chicago.

Illinois Gov. JB Pritzker, a Democrat, said there is no emergency and President Donald Trump is “attempting to manufacture a crisis” after reports that the federal government may deploy the National Guard to Chicago to address crime in the city.