New Delhi, Aug. 31 -- Chicago mayor Brandon Johnson has pushed back against what he called the "out-of-control" Trump administration's plan to surge federal officers into the nation's third-largest city, a move that could happen as soon as September 5 and last for 30 days.

The mayor has signed an executive order on Saturday which will bar Chicago police from assisting federal authorities with civil immigration enforcement or any related patrols, traffic stops and checkpoints during the surge.

The mayor's order also prohibits Chicago police from wearing face coverings to conceal their identities, a practice that has been largely adopted by federal agents, particularly from Immigration and Customs Enforcement (ICE) since the Trump adminis...