Chicago Mayor Brandon Johnson signed an executive order Saturday aimed at curbing the power of federal law enforcement officers and National Guard troops that he said President Donald Trump has threatened to deploy to Illinois.

"We find ourselves in a position where we must take immediate, drastic action to protect our people from federal overreach," Johnson, a Democrat, said in a press conference.

One of the main points of the order, Johnson said, was to direct the city's law department to use "every legal mechanism" to try to stop Trump's potential plan.

Johnson added later that he would use "every single tool that is at our disposal, and that includes the courts."

"It's an area in which at least there's some semblance of check and balance in this country," he said.

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