(WASHINGTON) — President Donald Trump’s use of federalized National Guard troops in U.S. cities is projected to have cost roughly $496 million last year, according to estimates from the nonpartisan Congressional Budget Office. If current troop levels are maintained, the deployments could cost as much as $1.1 billion this year, according to CBO estimates. Some 200 Guardsmen mobilized in Texas are estimated to cost about $4 million a month. The estimates include troop pay, hotel lodging and meals. The estimates are further complicated by uncertainty over both the duration and scale of the deployments, according to the CBO report.