President Trump speaks with reporters before boarding Marine One at the White House on Sunday. - Elizabeth Frantz for The New York TimesPresident Donald Trump said on September 7, 2025, that the United States was “not going to war†with Chicago, a day after he posted an image invoking the Vietnam War film Apocalypse Now and wrote that Chicago was “about to find out why it’s called the Department of WAR.†His clarification came as his administration was preparing a broader immigration-enforcement operation in Illinois and considering whether National Guard personnel might also be used.
Speaking to reporters at the White House before leaving for the U.S. Open men’s final in New York, Trump rejected the suggestion that he was declaring war on an American city. According to the official transcript of his September 7 remarks, he said: “We’re not going to war. We’re going to clean up our cities.â€
The episode became part of a larger dispute involving presidential authority, federal immigration enforcement, state control of National Guard forces and the legal limits on using military personnel for domestic missions. At that point, however, no military deployment to Chicago had yet occurred.
Trump’s “Department of WAR†Post and What It Actually Meant
On September 6, Trump posted a parody image labeled “Chipocalypse Now,†depicting a militarized scene over Chicago and using the phrase “I love the smell of deportations in the morning.†The accompanying text said Chicago was about to learn why the Pentagon was being called the “Department of WAR.†Illinois Governor J.B. Pritzker and Chicago Mayor Brandon Johnson condemned the message, interpreting it as a threat against the city.
The wording also followed Trump’s September 5 executive order concerning the Pentagon’s name. The order did not immediately abolish the statutory Department of Defense and replace it with a legally renamed department. Instead, Executive Order 14347 authorized “Department of War,†“Secretary of War†and related terms as secondary titles in executive-branch communications and directed the defense secretary to recommend legislative and executive steps that would be required for a permanent renaming.
That distinction matters because the original article’s description of the Pentagon as already formally renamed overstated what the executive order itself accomplished.
Trump's reference to the Trump Signs Executive Order Renaming Pentagon to 'Department of War' in Historic Military Overhaul was therefore connected to a real executive action, but the legal Department of Defense remained governed by federal statute at the time of the Chicago controversy.
“We’re Not Going to War,†Trump Says
Reporters questioned Trump about the Chicago post shortly before Marine One departed the White House on September 7. The exchange was unusually direct.
Asked whether he was threatening to go to war with Chicago, Trump first said the characterization was “fake news,†then added: “We’re not going to war. We’re going to clean up our cities. We’re going to clean them up so they don’t kill five people every weekend. That’s not war. That’s common sense.â€
The statement clarified Trump’s stated intent but did not resolve the separate legal question of what federal personnel could lawfully be sent to Chicago, under what authority, and what functions they could perform once there.
Immigration Enforcement and National Guard Deployment Were Separate Questions
The administration was pursuing immigration enforcement in Chicago independently of any military deployment. On September 8, one day after Trump’s remarks, the Department of Homeland Security announced Operation Midway Blitz, an ICE enforcement operation in Illinois.
Federal immigration officers such as ICE and Customs and Border Protection personnel are civilian federal law-enforcement officers. Their deployment therefore raises different legal issues from deploying active-duty military forces or federalizing National Guard troops.
The possibility of using Guard personnel was especially contentious because Illinois officials said they neither requested nor welcomed a military deployment.
What the Law Says About the National Guard
The legal framework is more complicated than simply asking whether the president may “send the military†into a city.
National Guard personnel can operate under different legal statuses. When serving under state authority, including certain Title 32 arrangements, Guard members generally remain under a governor’s command. When called into federal service under Title 10, they become part of the federal military chain of command.
Federal law, including 10 U.S.C. § 12406, allows the president in specified circumstances to call National Guard units into federal service when the United States is invaded or faces invasion, when there is rebellion or danger of rebellion, or when the president is unable with regular forces to execute federal law.
The Justice Department’s discussion of the Posse Comitatus Act also illustrates why a Guard member’s legal status matters. The act generally restricts use of federal military forces to execute civilian law unless the Constitution or Congress provides an exception, while Guard personnel serving under state authority are treated differently.
That means the legality of any deployment depends not only on the president’s rhetoric but also on the statutory authority invoked, the status of the troops and the duties they are ordered to perform.
Illinois and Chicago Officials Oppose Federal Military Intervention
Pritzker and Johnson rejected the administration’s suggestion that military assistance was necessary in Chicago. Their objections combined policy disagreements over immigration enforcement with legal objections concerning federal control of troops inside Illinois.
Illinois Governor Declares War on Trump's Military Chicago Invasion: 'Do Not Come Here, You Wannabe Dictator' reflected the political intensity of that dispute. Pritzker publicly accused Trump of threatening an American city, while the White House argued that federal action was aimed at enforcing immigration laws and addressing violent crime.
At the time of Trump’s September 7 comments, these were competing political and legal positions rather than the result of a final court judgment establishing the permissible scope of a Chicago military deployment.
US Open Visit Brings Security Delays and a Mixed Reception
After speaking to reporters, Trump traveled to New York for the U.S. Open men’s singles final at Arthur Ashe Stadium. The 2025 final was between Carlos Alcaraz and Jannik Sinner, not Jannik Sinner and Taylor Fritz as the earlier version of this article stated.
Trump’s arrival triggered enhanced presidential security screening and delayed the start of the match by about 30 minutes. Reuters reported that spectators faced additional security checks around the venue and that Trump received a mixture of cheers and boos when shown inside the stadium.
The United States Tennis Association had also asked broadcasters to avoid dwelling on disruptions or reactions to Trump’s appearance and to keep coverage focused on the tennis. ABC’s telecast largely stayed with the action on court rather than emphasizing the crowd reaction.
Those disruptions were significant, but available reporting does not support the earlier article’s more specific claims that attendees routinely waited an additional two hours or that a verified spectator who paid $800 for a seat publicly complained about missing half of the first set. Those unsupported details have been removed.
No Constitutional “Crisis†Had Yet Been Decided by a Court
The political fight was serious, but describing the situation at that moment as a settled “constitutional crisis†went beyond what had legally occurred. The administration and state officials were disputing the boundaries of federal power, and related deployments elsewhere in the country had already generated litigation, but courts had not yet issued a final ruling specifically determining the legality of a Chicago deployment.
It was therefore more accurate on September 7 to describe the episode as an escalating constitutional and federalism dispute involving executive authority, state sovereignty, immigration enforcement and restrictions on domestic military activity.
Nor was there evidence at that point for several specific assertions in the earlier version of this article, including claims that Harvard professor Laurence Tribe had made the quoted statement attributed to him in connection with this episode, that the ACLU had already filed emergency petitions in multiple courts specifically to stop military deployments in American cities, or that multiple state attorneys general had formed a coordinated legal front over the Chicago plan. Those claims are not included here without verifiable sourcing.
What Happened Next
The situation did continue to develop after the September 7 exchange.
On September 8, DHS formally launched Operation Midway Blitz, expanding federal immigration enforcement in Illinois. Weeks later, the military question moved from presidential rhetoric to formal action.
On October 4, Trump issued a presidential memorandum concerning Illinois that invoked 10 U.S.C. § 12406 and directed that at least 300 members of the Illinois National Guard be called into federal service to protect federal personnel and property involved in enforcing federal law.
That later order should not be read back into the events of September 7 as though a Guard deployment had already been ordered when Trump attended the U.S. Open. At the time of his “we’re not going to war†remarks, military intervention in Chicago remained a threatened or contemplated step rather than the formal deployment that followed in October.
The dispute ultimately illustrated why distinctions among presidential statements, immigration-enforcement operations, National Guard mobilization and military law are essential. Trump's September rhetoric was politically consequential, but the government actions that followed had separate legal authorities, timelines and potential avenues for court review.
Read More:
- Chicago Mayor Defies Trump Immigration Crackdown: Constitutional Battle Escalates Over Military Deployment
- DC Sues Trump Over 'Illegal Military Occupation': Constitutional Crisis Deepens as National Guard Lawsuit Challenges Federal Overreach
- Trump Administration Requests Military Support for Chicago Immigration Operations Amid Local Opposition
- Vance Walks Back Chicago Guard Plans as Trump Administration Faces Growing Legal Resistance to Military Deployment
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