The United States Supreme Court has refused the deployment of the National Guard in Chicago over the objection of Illinois officials, amid doubt on the viability of such deployments in other cities. The preliminary order barred the Trump administration from directing a state-based military force to the Chicago area, where an immigration enforcement drive had triggered arrests and confrontations between residents and federal authorities.

The court declined to grant the president wide-ranging discretion to deploy the military in American cities. The court said the Trump administration had not shown that the statute at issue permits the president to federalise the Guard in the exercise of inherent authority to protect federal personnel and property in Illinois. Donald Trump had earlier ordered the National Guard to Portland, Los Angeles, and Washington DC.