US Supreme Court Blocks Trump's National Guard Deployment to Chicago. The US Supreme Court has refused to allow President Donald Trump to deploy National Guard troops to the Chicago area, marking a rare legal setback for his administration. The court left in place a lower court order that blocks the deployment, saying the government failed to show it had the legal authority to use the military to enforce laws in Illinois, except in exceptional circumstances. Trump argues the troops are needed to protect federal immigration facilities amid protests but Illinois officials say the demonstrations have been limited, largely peaceful, and manageable by local police. Democratic leaders accuse Trump of abusing presidential power to target Democratic-led cities while the White House insists the ruling does not change its commitment to enforcing immigration laws. The legal battle continues as similar disputes unfold in other US cities.