Domestic National Guard deployments could cost the federal government more than $1 billion in 2026 if they continue at the same rate they did last year, according to a new estimate from the Congressional Budget Office released on Wednesday.

President Donald Trump deployed National Guard troops or active-duty Marines to Los Angeles, California; Washington, D.C.; Memphis, Tennessee; Portland, Oregon; Chicago, Illinois; and New Orleans, Louisiana last year, though that list could expand further this year.