Chicago Mayor Brandon Johnson is taking a defiant stance againstPresident Donald Trump's promise todeploy the National Guardto the nation's third-largest city. Johnson on Aug. 30 signed anexecutive orderhe said lays out "how we can stand up against this tyranny." Chicago police will not help the National Guard with immigration enforcement or related activities such as conducting traffic stops and manning checkpoints, according to the order. "This is about making a very clear distinction between what our law enforcement engages in versus what federal agents engage in," Johnson said at anews conference. "This president is not going to come in and deputize our police department." More:Chicago is up next for the National Guard. 'They're screaming for us,' says Trump Chicagoans expect the White House to bring itsimmigration crackdownto the city sometime after Labor Day. Trump went after Illinois Gov. JB Pritzker on Aug. 30, writing on social media that Pritzker is "CRAZY" if he thinks he doesn't need Trump's help fighting crime. "He better straighten it out, FAST, or we're coming!" Trump wrote on his Truth Social site. Pritzker has warned Chicagoans to expect military checkpoints with "unidentified officers in maskswhile taking their kids to school." But heasked protestersto refrain from giving federal troops reason to engage. More:'Keep it peaceful,' Chicago top cop warns ahead of Trump National Guard deployment Nearly 2,300 armed National Guard troops are currently in Washington, DC,after Trump declared a public crime emergencyin the nation's capital on Aug. 11, even as data from Washington police show violent crime was down 26% from last year. Violent crime rates are also falling in Chicago, according to police department data. Trump has also mentionedBaltimore, New York City, Los Angeles and Oakland, California ‒ each cities with Democratic mayors in states led by Democratic governors ‒ as potential federal targets. More:Exclusive − Trump doesn't want long-term occupation of American cities, Vance says Johnson said his executive order ensures that Chicagoans know their rights and every city agency knows what it's supposed to do to protect those rights. Calling Trump "the biggest threat to our democracy that we've experienced in the history of our country," Johnson asserted: "I don't take orders from the federal government." This article originally appeared on USA TODAY:Chicago mayor says city will stand up to Trump's `tyranny'