“Federal troop deployments to U.S. cities cost a total of $496 million in 2025, CBO estimates. Continuing current deployments will cost $93 million a month; 1,000 Guard personnel deployed to a city will cost at least $18 million a month. This letter responds to a request that the Congressional Budget Office estimate the costs associated with federal deployments of National Guard personnel to U.S. cities. CBO was asked to focus on three categories of costs: the costs to activate, deploy, and compensate National Guard personnel; the operational, logistical, and sustainment costs of maintaining those deployments; and any additional direct or indirect costs associated with the use of National Guard or other military forces. Since June 2025, the Administration has deployed National Guard personnel or active-duty Marine Corps personnel to six U.S. cities: Los Angeles, California; Washington, D.C.; Memphis, Tennessee; Portland, Oregon; Chicago, Illinois; and New Orleans, Louisiana. The Administration has also kept 200 National Guard personnel mobilized in Texas after they left Chicago. CBO estimates that those deployments (excluding the one to New Orleans, which occurred at the end of the year) cost a total of approximately $496 million through the end of December 2025.”