Chicago Mayor Brandon Johnson signed an executive order directing city agencies and police to resist US President Donald Trump’s planned federal immigration enforcement surge, which could begin within days.The order, issued on Saturday, bars the Chicago Police Department from helping federal authorities with civil immigration enforcement, patrols, traffic stops, checkpoints, or arrest operations. Johnson said the measure was necessary to “guard the constitutional rights of Chicago residents amidst the possibility of imminent militarised immigration or National Guard deployment by the federal government,” according to news agency AP.When asked whether he would follow instructions from federal agents, Johnson replied, “Yeah, and I don’t take orders from the federal government.”The order also requires Chicago police, including undercover officers, to wear uniforms and prohibits them from covering their faces, contrasting with federal immigration officers, many of whom now wear masks since Trump took office. At the same time, Johnson urged federal officers deployed in Chicago to identify themselves with names, badge numbers and body cameras, Politico reported.Two US officials cited by AP said the immigration crackdown could start as early as September 5 and last for 30 days. The officials said the operation was part of a wider Trump administration strategy to expand federal law enforcement in Democratic-led cities, similar to earlier actions in Los Angeles.At a news conference, Johnson accused Trump of using federal power for political retribution, calling him ‘reckless and out of control.’ “He’s the biggest threat to our democracy that we’ve experienced in the history of our country”, he added.Trump, in a Truth Social post on Saturday, pointed to Chicago’s recent gun violence and attacked Illinois Governor JB Pritzker. “Six people were killed, and 24 people were shot, in Chicago last weekend, and JB Pritzker, the weak and pathetic Governor of Illinois, just said that he doesn’t need help in preventing CRIME. He is CRAZY!!! He better straighten it out, FAST, or we’re coming!”The White House described Johnson’s executive order as a “publicity stunt.” Spokeswoman Abigail Jackson was quoted as saying by CNN, “If these Democrats focused on fixing crime in their own cities instead of doing publicity stunts to criticise the President, their communities would be much safer. Cracking down on crime should not be a partisan issue.”Illinois governor Pritzker also condemned Trump’s plan, accusing the administration of trying to “circumvent our democracy, militarise our cities and end elections,” CNN reported.Vice President JD Vance, however, defended the administration’s approach, saying during a visit to Wisconsin, “Chicago has had a lot of crime problems. Why is it that you have mayors and governors who are angrier about Donald Trump offering to help them than they are about the fact that their own residents are being carjacked and murdered in the streets?”