Chicago's Mayor Brandon Johnson has signed an order outlining how the city will resist a potential immigration crackdown threatened by the Trump administration, with Johnson stating the city does not want an "unconstitutional and illegal military occupation." This move escalates an ongoing dispute between the White House and Illinois officials over crime and immigration.

• The order directs Chicago city agencies on how to respond to possible federal immigration enforcement actions, demanding that Trump and federal agents "stand down from any attempts to deploy the US Armed Forces" in the city.
• Mayor Brandon Johnson (a Democrat) is the key figure, opposing Donald Trump's (a Republican) threats to deploy troops and federal agents to Chicago, which Trump has called a "mess" and a "killing field."
• More than one in five Chicago residents is an immigrant, with over half coming from Latin American countries, making the city a significant target for immigration enforcement actions, according to Johnson's office.