(CNN) — Officials in Chicago are bracing for a major federal immigration enforcement operation that could begin as soon as this week, with the city’s mayor signing an order over the weekend aimed at resisting the Trump administration’s planned crackdown.

Illinois Gov. JB Pritzker said Sunday such a move would be an “invasion” and that he has had no communication with the Trump administration about reported plans to send National Guard troops to Chicago.

“No one in the administration – the president or anybody under him – has called anyone in my administration, or me. So, it’s clear that in secret they’re planning this – well, it’s an invasion with US troops, if they in fact do that,” Pritzker said Sunday.

The operation is expected to kick off in Chicago by this Friday and could inv

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