President Donald Trump’s efforts to deploy the National Guard in several U.S. cities have ignited legal and political controversy, as state and local leaders push back against what they describe as federal overreach.
Trump claims the deployments are necessary to address rising crime, manage protests, and support his immigration enforcement policies—particularly in Democratic-led cities. However, Democratic governors and legal experts argue that these actions are unnecessary and could intensify unrest, rather than contain it.
This week, Illinois filed a lawsuit to block the deployment of 300 National Guard troops to Chicago, where immigration protests have taken place near detention facilities. Governor JB Pritzker accused Trump of “manufacturing a crisis” for political gain. A federal judge also temporarily blocked the deployment of troops from Texas and California to Portland, Oregon, in response to similar concerns.
### What is the National Guard?
The National Guard is a reserve military force primarily controlled by state governments. Troops are typically called upon to assist with natural disasters, civil unrest, and emergencies. Each U.S. state, along with Washington, D.C., and U.S. territories, maintains its own National Guard units, which can also be deployed abroad or for specific missions like wildfire response or border security.
While the Guard can be federalized by the president during national emergencies, its deployment for domestic law enforcement is limited by the Posse Comitatus Act. This law restricts the federal government’s use of military forces for civilian law enforcement unless specifically authorized by Congress. National Guard troops cannot normally make arrests or conduct searches.
### How Trump Is Using the National Guard
Trump has repeatedly sought to bypass state authority in order to deploy the Guard. In June, he took control of the California National Guard to respond to protests in Los Angeles, despite opposition from Governor Gavin Newsom. While an appeals court upheld his authority, a federal judge later ruled that Trump’s actions violated the Posse Comitatus Act.
Most recently, Trump sent hundreds of troops to Washington, D.C., citing what he called “complete and total lawlessness.” Now, his attempt to deploy troops to Portland has been temporarily halted in court.
The disputes highlight a growing constitutional clash between federal authority and states’ rights, with legal challenges likely to shape the limits of presidential power over the National Guard in the coming months.
