CHICAGO (WLS) -- Mayor Brandon Johnson is taking new steps to fight President Donald Trump's expected immigration crackdown and potential National Guard deployment in the Chicago area.

Johnson signed the "Protecting Chicago" executive order on Saturday as the Trump administration prepares to conduct a major immigration enforcement operation, which could start next week.

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Sources say hundreds of immigration enforcement agents could be coming to Chicago. Those agents are expected to be stationed at Naval Station Great Lakes .

Leaders at all levels of government have been calling out the plans, including Gov. JB Pritzker, who says there is nothing the state of Illinois can legally do to stop any immigration enforcement operations.

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