Thousands of soldiers and dozens of tanks will take part in the parade, which will end with a concert on the Mall. Critics see it as an ego boost for Trump.
The administration had argued that Congress intruded on the president’s powers in how it attempted to restrict his ability to fire members of the commission.
The Army’s 250th birthday parade will feature about 6,600 soldiers, 150 ground vehicles, and 50 aircraft. The cost will be between $25 million and $45 million.
DHS said in a statement that illegal immigrants will be told in the notice that their parole has been terminated and their employment authorization revoked.