The Trump administration argued in a court filing on Monday that pausing construction on the new White House ballroom would undermine national security, citing a Secret Service declaration warning that halting work would leave the site unable to meet ‘safety and security requirements’ needed to protect the president.
The declaration says the White House’s East Wing, demolished in October and now undergoing below-grade work, cannot be left unfinished without compromising essential security measures.
‘Accordingly, any pause in construction, even temporarily, would leave the contractor’s obligation unfulfilled in this regard and consequently hamper the Secret Service’s ability to meet its statutory obligations and protective mission,’ reads the filing in part.
The government’s memorandum was in response to a lawsuit filed last week in the U.S. District Court for the District of Columbia by the National Trust for Historic Preservation, a nonprofit that says it advocates for preserving historic sites of national importance and protecting the public’s role in that process.
The National Trust lawsuit targets key government officials responsible for overseeing the White House grounds and the agencies managing the construction project, including the National Park Service and the Department of the Interior.
It argues that pausing the Trump administration’s ballroom project is essential to prevent irreversible changes while the required oversight and public involvement procedures are carried out.
‘Submitting the project to the National Capital Planning Commission for review protects the iconic historic features of the White House campus as it evolves. Inviting comments from the American people signals respect and helps ensure a lasting legacy that befits a government of the people, by the people, for the people,’ said Carol Quillen, the president and CEO of the National Trust for Historic Preservation.
The White House announced President Donald Trump’s plans in July to move forward with a 90,000-square-foot state ballroom that would cost an estimated $200 million. That figure has now risen to at least $300 million, and while the project is backed by some private donors, Trump has also insisted it will be funded ‘100% by me and some friends of mine.’
In its filing, the administration emphasized that key regulatory reviews are forthcoming, saying it plans to submit draft architectural drawings and materials to the National Capital Planning Commission and the U.S. Commission of Fine Arts in the coming weeks.
The government argued the lawsuit is premature because above-grade construction is not scheduled to begin until April 2026.
The National Trust, however, counters that the scale of the project makes early intervention necessary. In its lawsuit, the group argues that the 90,000-square-foot addition would dwarf the Executive Residence and permanently upset the classical balance of the White House’s design.
The complaint also cites an October statement from the Society of Architectural Historians, which warned that the proposed ballroom would represent the most significant exterior change to the building in more than 80 years.