WASHINGTON, D.C. – In a dramatic 11th-hour legal move, the National Trust for Historic Preservation filed a federal lawsuit on December 11, 2025, seeking an immediate injunction to stop construction of a massive temporary ballroom and viewing stand complex currently being erected on the Ellipse and South Lawn of the White House ahead of Donald Trump’s second inauguration on January 20, 2026.

The lawsuit, filed in the U.S. District Court for the District of Columbia, alleges that the Trump administration and the Joint Congressional Committee on Inaugural Ceremonies (JCCIC) have violated the National Historic Preservation Act (NHPA), the National Environmental Policy Act (NEPA), and the Commemorative Works Act by failing to conduct any legally required historic and environmental review of the President’s Park — a federally protected national historic landmark that includes the White House and its immediate grounds.

Photographs taken this week show heavy construction equipment, cranes, and large prefabricated structures already in place on the South Lawn, with workers racing to complete what sources describe as an enormous climate-controlled ballroom capable of seating thousands — far larger than any previous inaugural viewing stand or tent.

Key allegations in the lawsuit:

• No Section 106 review under the National Historic Preservation Act was ever initiated, despite the fact that the White House and President’s Park are listed on the National Register of Historic Places and designated a National Historic Landmark.
• Construction has caused physical damage to the historic landscape, including removal of mature trees and compaction of soil in areas that contain archaeological resources from the 19th and early 20th centuries- The scale of the project — reportedly over 60,000 square feet of temporary structures — constitutes a “major federal undertaking” requiring full environmental impact analysis under NEPA- The design and placement of the ballroom obstruct historic vistas of the White House from the National Mall, permanently altering one of the most iconic views in American democracy

“This is not about politics. This is about protecting one of the most sacred historic sites in the United States from irreversible harm,” said Paul Edmondson, president and CEO of the National Trust for Historic Preservation. “The White House belongs to all Americans — not to one president for private events. Federal law is crystal clear: you cannot bulldoze a national historic landmark without proper review, no matter who is in office.”

Trump team calls the lawsuit “frivolous” and “election interference”

The Trump transition team and inaugural committee fired back almost immediately, calling the lawsuit a politically motivated stunt.

“President Trump was overwhelmingly elected by the American people, and they expect a spectacular celebration on January 20th,” a spokesperson said. “This ballroom will allow thousands more patriots to witness history in comfort and safety. The same people who tried to stop his first inauguration with phony Russia hoaxes are at it again. Sad!”

Sources familiar with the planning say the ballroom is intended to host a lavish “People’s Gala” on inauguration night — an invitation-only black-tie event expected to be one of the largest and most expensive inaugural celebrations in history.

Legal experts divided

Some legal scholars believe the National Trust has a strong case.

“If they can prove no Section 106 consultation occurred at all, this could be a slam-dunk injunction,” said one former Interior Department attorney. “The White House grounds are not exempt from federal preservation laws just because the president wants a bigger party.”

Others are skeptical the courts will intervene so close to Inauguration Day.

“Judges are extremely reluctant to halt inaugural activities,” said a constitutional law professor at Georgetown. “National security and continuity of government concerns almost always win out.”

A hearing on the motion for temporary restraining order has been scheduled for December 15, 2025.

As cranes continue to rise over the South Lawn and workers labor around the clock, one thing is certain: the battle over Donald Trump’s inauguration ballroom has become the first major legal and cultural controversy of his second term — before he has even taken the oath of office.