The suit alleges that Congress has not authorized the arch and that required environmental and historic reviews have not been completed.

President Donald Trump signed a disaster declaration for Washington, D.C., allowing FEMA to coordinate emergency relief efforts over the Potomac River sewage crisis.

President Donald Trump on Saturday approved an emergency declaration for the District of Columbia due in wake of the Potomac River spill.

The collapse of a pipe on the Potomac Interceptor sewer line caused more than 200 million gallons of sewer wastewater to gush into the Potomac River.

DC Mayor Muriel Bowser on Wednesday declared a public emergency regarding the massive discharge of raw sewage into the Potomac River after a section of sewer line collapsed in January.

Veterans say the Trump administration has failed to take the first legal step, obtaining congressional authorization, and thus cannot rush ahead with construction.

President Donald Trump exits the House Chamber after delivering the State of the Union address to a joint session of Congress in the House chamber at the U.S. Capitol in Washington, Tuesday, Feb. 24, 2026. (Kenny Holston/The New York Times via AP, Pool)

President Donald Trump on Saturday approved District of Columbia Mayor Muriel Bowser’s request for an emergency disaster declaration, addressing what is considered the largest sewage spill in U.S. history.