construction

April 17 (UPI) — All above-ground construction of the White House ballroom must be stopped amid litigation, a federal judge ordered Thursday, reprimanding the Trump administration for trying to justify continued work on the building as necessary for national and presidential security concerns.

“National security is not a blank check to proceed with otherwise unlawful activity,” U.S. District Judge Richard Leon said.

The ruling comes almost three weeks after Leon issued a preliminary injunction against the $400 million project, finding that construction at the White House requires congressional approval. While ordering the construction halt amid appeal, Leon carved out an exception for the government to continue underground work deemed necessary for the White House’s safety and security.

That prompted litigation over the scope of the carve-out and the Trump administration argue that construction of the ballroom above ground was needed as security elements ran through the entire facility.

“Defendants argue that the entire ballroom construction project, from tip to tail, falls within the safety-and-security exception and therefore may proceed unabated. That is neither a reasonable nor a correct reading of my order!” Leon said Thursday.

“It is, to say the least, incredible, if not disingenuous, that defendants now argue that my order does not stop ballroom construction because of the safety-and-security exception!”

The federal government has filed an appeal against the Thursday ruling.

“We are pleased the court upheld the preliminary injunction and halted above-ground construction of the White House ballroom until Congress approves the project,” Carol Quillen, CEO and president of the National Trust for Historic Preservation, which filed the initial lawsuit, said in a statement.

Trump has said building a White House ballroom has been his dream since before he was president, and has said its price tag, which has ballooned from an initial $200 million, is to be covered by private donors.

In December, as construction was underway following the October demolition of the East Wing, the National Trust for Historic Preservation sued to stop the project, arguing U.S. law mandates the project be authorized by Congress, resulting in the March 31 injunction and the Trump administration filing an appeal.

After the Thursday ruling, Trump chastised Leon in a series of posts on his Truth Social platform, calling him an “out of control Trump hating” judge whose ruling “severely jeopardizes the lives and welfare of the people who work, and will be working, at the White House.”

“The underground doesn’t work, isn’t necessary and would indeed be useless without the above-ground section,” he said in a Truth Social post.

“This highly political Judge, and his illegal overreach, is out of control, and costing our Nation greatly,” he said in another statement.

“This is a mockery of our Court System! The Ballroom is deeply important to our National Security, and no judge can be allowed to stop this Historic and Militarily Imperative Project.”

WASHINGTON — President Trump’s design for the Triumphal Arch he wants built at an entrance to the nation’s capital moved a step forward Thursday after a key agency reviewed the proposal for the first time. One commissioner suggested changes, including losing the Lady Liberty-like statue and pair of eagles that would sit on top of the arch and add to its height.

The arch is one of several projects that the Republican president is pursuing alongside a White House ballroom to leave his lasting imprint on Washington.

The U.S. Commission of Fine Arts voted to approve the concept design for the arch. The seven commissioners, all appointed by Trump, will review an updated version of the design before taking a final vote at a future meeting.

Trump said last week on social media that the arch “will be the GREATEST and MOST BEAUTIFUL Triumphal Arch, anywhere in the World” and a “wonderful addition to the Washington D.C. area for all Americans to enjoy for many decades to come!”

Also on the agenda for the commission’s monthly meeting was his plan to paint the gray granite exterior of the Eisenhower Executive Office Building, which is next to the White House, white.

A third White House-related project, construction of an underground center to conduct security screenings of tourists and other guests, was also up for consideration.

Triumphal Arch

The arch would stand 250 feet tall from its base to a torch held aloft by a Lady Liberty-like figure atop the structure. That figure would be flanked up top by two eagles and guarded at the base by four lions — all gilded. The phrases “One Nation Under God” and “Liberty and Justice for All” would be inscribed in gold lettering atop either side of the monument.

The commission’s vice chairman, architect James McCrery II, said he preferred the arch without the figure and eagles on top. McCrery also objected to the lions on the base.

The arch would be built on a human-made island managed by the National Park Service on the Virginia side of the Potomac River at the end of Memorial Bridge from the Lincoln Memorial in Washington. The arch would dwarf the Lincoln Memorial, which is 99 feet tall, and be close to half the height of the Washington Monument, an obelisk that is about 555 feet tall.

White House press secretary Karoline Leavitt said Wednesday that the arch’s 250-foot height will honor America’s 250 years of existence.

A group of veterans and a historian has sued in federal court to block construction on the grounds that the arch would disrupt the sightline between the Lincoln Memorial and Arlington House at Arlington National Cemetery, among other reasons.

Underground screening center for White House visitors

The U.S. Secret Service, Interior Department, National Park Service, and the Executive Office of the President want to start construction in August on a 33,000-square-foot (3,066-square-meter) center to screen tourists and other visitors to the White House.

It would be built beneath Sherman Park, federal land southwest of the White House, to provide a more secure place to screen those going on White House tours or attending events. The new facility would have seven lanes to ease processing and reduce wait times.

Officials want it operating by July 2028, six months before Trump’s term ends.

Eisenhower Executive Office Building paint job

Trump said the Executive Office Building is beautiful, but he does not like its gray exterior.

“It’s one of the most beautiful buildings anywhere in Washington,” Trump said in August. “I think it’s just incredible, but you have to get past the color because the stone they used was a really bad color.”

Two proposals were given to the commission: Cover the entire building in bright white or paint most of it white while leaving untouched the granite on the exposed basement and subbasement.

In written materials, the White House said the building has been largely neglected since its construction. It said the building’s color, design and massing do not “align visually with the surrounding architecture” and lack ”any symbolic cohesion with the White House.”

The paint job is also the subject of litigation in federal court.

The building sits across a driveway from the West Wing. It was completed in 1888 after 17 years of construction, and its granite, slate, and cast iron exterior makes it one of America’s best examples of the French Second Empire style of architecture.

It originally housed the departments of State, War and Navy. It currently houses offices for the vice president and the National Security Council, among others.

The building is a National Historic Landmark and is also listed on the National Register of Historic Places.

Superville writes for the Associated Press.

The California Science Center announced Monday that construction has been completed on its new Samuel Oschin Air & Space Center, bringing the highly anticipated expansion one step closer to its public debut.

The culmination of a master project plan adopted in 1993, the sleek 20-story, 200,000-square-foot new building rising over Exposition Park will nearly double the museum’s exhibit space and anchor a $450-million campaign to permanently house the retired space shuttle Endeavour.

“I keep saying this, and it sounds cliché,” said Jeffrey Rudolph, the Science Center’s president and chief executive. “But it’s better than we ever dreamed.”

The Samuel Oschin Air & Space Center will be split into three galleries — air, space and shuttle — containing aerospace artifacts and hands-on exhibits demonstrating scientific principles.

At the heart of the new addition is Endeavour itself, displayed in a vertical “ready-to-launch” configuration that’s never been replicated with real hardware outside of a NASA or Air Force facility. The display includes rocket boosters from manufacturer Northrop Grumman and a massive external fuel tank from NASA.

Artifact installation is underway at the new Samuel Oschin Air & Space Center.

(Myung J. Chun / Los Angeles Times)

A veteran of 25 missions from 1992 to 2011, Endeavour arrived in L.A. in 2012 during a widely watched journey atop a modified Boeing 747, followed by a slow procession through city streets. For over a decade, the retired orbiter was exhibited horizontally in a temporary, tent-like structure known as the Samuel Oschin Space Shuttle Endeavour Display Pavilion.

In early 2024, Angelenos watched as the shuttle was carefully lifted and placed into its final upright position in an intensive overnight operation.

With several observation areas spanning the nearly 200-foot tall shuttle stack, Rudolph said the new installation will offer visitors “views that almost no one’s ever seen.”

A cutting-edge building design by architectural firm ZGF Architects contributes to that awe-inspiring experience with a 2,000-ton curved structural framework of diagonally intersecting steel beams called a diagrid, which eliminates interior columns and allows visitors unobstructed views of the shuttle stack.

The idea is that “you don’t have a sense there’s a building at all,” said Ted Hyman, partner at ZGF Architects. Instead, you’re meant to feel like you’re standing on a launch pad outside. The dimness of the shuttle gallery also assists in the immersive fantasy, both as an artistic choice and a practical one due to the shuttle’s sensitivity to light.

Yet while the structure is designed to be undetectable from the inside, it’s a full-blown metallic colossus on the outside — visible from the surrounding L.A. freeways. Its colors are most magnificent at sunset.

When asked whether he’d had any doubts about the feasibility of the intricately choreographed construction project, Hyman replied, “I think up until about last week.”

Nonetheless, he said, “you forget about the challenges when you see the building done.”

Lynda Oschin, wife of the new air and space center’s titular philanthropist Samuel, called the project a “dream come true.”

“This space shuttle is everything rolled into one that my husband loved: astronomy, innovation, exploration, science, math and especially children,” Oschin said. “What this is going to do for the children is just incredible.”

The donor said her husband, whose picture is in the cockpit of the Endeavour, would have been very proud — if a little embarrassed — that his name is on the new building.

The Samuel Oschin Air & Space Center is 20 stories tall.

(Myung J. Chun / Los Angeles Times)

With the construction phase in the rearview, Rudolph said the center is now focused on completing installation of the galleries’ artifacts and hands-on installations. The Samuel Oschin Shuttle Gallery, which houses the Endeavour shuttle stack, is nearest to completion. In the two others, artifact installation is well underway.

The Korean Air Aviation Gallery explores the mechanics of flight and will display approximately 25 aircraft, from historical relics like the WWII “Vampire” jet to modern supersonic jet fighters. The Kent Kresa Space Gallery will feature a wide array of spacecraft, planetary probes, telescopes and more. Rudolph was especially excited about acquiring a SpaceX Cargo Dragon, which will further the air and space center’s goal to “show people that this isn’t all history.”

“There’s a lot of amazing things going on in aviation and space, and a lot of it happening in California,” the executive said.

The interactive installations complementing the artifacts include a 747 flight simulation and a 45-foot-long slide carrying visitors down to the bottom of the shuttle stack, which Rudolph himself has already ridden. His goal with these novelties was to both educate visitors about scientific principles and get children excited about the subject, which can get flattened in the traditional school system.

“Kids get turned off to science very early,” Rudolph said, but when they come to the science center, it’s like a whole new world opens up to them.

Rudolph said he expects to announce an opening date for the Samuel Oschin Air & Space Center this summer. He added that while it’s his intention to open by the 2028 L.A. Olympics, “we’re not really building this for a two-week athletic event.”

“We’re building this for the next 50 years to serve our community and inspire people,” he said.

As Rudolph made his way across the science center campus in March, he chuckled at the children bumping into him on their way to the exhibits.

“Future scientists, right?” he said.

April 11 (UPI) — A panel of judges said Saturday it will allow construction on the White House ballroom to continue for now.

The panel of three judges in the U.S. Court of Appeals for the D.C. Circuit told the lower court judge who halted the project to seek more information about the national security risk that President Donald Trump claims the pause in construction causes.

In an earlier filing, the Trump administration said that stopping construction “would imperil the President and national security, and indefinitely leave a large hole beside the executive residence.”

The planned construction includes bomb shelters, a hospital, medical area and other “top secret military installations, structures and equipment,” the administration said.

Construction of the 90,000-square-foot building began with the demolition of the East Wing of the White House in October. The new building was to cost $200 million, but the ballroom’s price tag has since doubled. Trump said it will be financed by private donors.

U.S. District Judge Richard Leon for the District of Columbia halted the work on April 1.

“The President of the United States is the steward of the White House for future generations of First Families. He is not, however, the owner!” Leon said in his opinion.

The appeals court said work on the project can continue until at least April 17.

“It remains unclear whether and to what extent the development of certain aspects of the proposed ballroom is necessary to ensure the safety and security of those below-ground national security upgrades or otherwise to ensure the safety of the White House and its occupants while the appeal proceeds,” the judges in the majority wrote.

The judges, Patricia Ann Millett, Bradley Garcia and Neomi Rao, were not unanimous. Rao dissented, arguing that the National Trust for Historic Preservation lacked standing to sue.

Trump has also said that the military was building a “massive complex” under the ballroom, but he hasn’t released any details.

The National Trust told the appeals court that Trump was confusing the above-ground ballroom with the below-ground bunker.

“As is obvious, the absence of a massive ballroom on White House grounds has not stopped this (or any other) President from residing at the White House or hosting events there,” the lawyers said in a filing. “Temporarily halting the ballroom project until it complies with the law will not irreparably harm defendants or the nation.”

Justice Department lawyers had asked the court to shelve Leon’s ruling.

“The upgrades to the East Wing are not cosmetic; instead, they involve the use of missile-resistant steel columns, beams, drone-proof roofing materials, and bullet-, ballistic- and blast-proof glass windows,” they said in a filing. “They also include the installation of bomb shelters, hospital and medical facilities, protective partitioning and top-secret military installations, air conditioning, heating, venting and more.”

On April 2, The National Capital Planning Commission voted Thursday to approve Trump’s plans for the White House ballroom. Though, that vote doesn’t override the court’s rulings.

Even though a fragile ceasefire between Iran and the United States and Israel has been announced, it’s going to be a long time before prices of oil and gas come back to pre-war levels, experts say.

In response to the US-Israeli attacks, Iran choked off the Strait of Hormuz, the narrow channel linking the Gulf to the Gulf of Oman, through which roughly 20 percent of the world’s oil and gas exports pass from the Middle East, mainly to Asia and also to Europe.

It also attacked energy infrastructure in several Gulf countries, leading to soaring prices of not just energy but also of byproducts like helium, used in a range of products like tiles used in homes and semiconductor equipment. Fertilisers that rely on some of these inputs were hit too, impacting sowing seasons.

As a result, consumers the world over, but particularly in developing countries of Asia and Africa, have felt the brunt of those shortages and soaring prices. The question on many minds: Now that there is a ceasefire in place, how quickly will prices normalise?

“Anyone who tells you they know the answer to that question is lying,” said Rockford Weitz, professor of practice in maritime studies at The Fletcher School at Tufts University. “It’s too early to tell when we return to normal.”

There needs to be a predictable and stable flow of cargo through the strait before markets can stabilise, experts say.

“What we’re seeing is the biggest disruption in the history of global oil markets,” said Weitz.

Before this conflict, approximately 120-140 ships passed through the Strait of Hormuz every day. On Wednesday, only five vessels crossed the strait, while seven passed through the waterway on Thursday.

That shows why “to get back to normal is going to be a while”, Weitz told Al Jazeera. “And it’s too complicated to know at this stage when that will happen, as it requires collaboration with the great powers [US, China and Russia], but also regional powers [UAE, Saudi Arabia, India and Pakistan]. It’s hard to say when it will end, as there are so many parties who can make it not happen.”

There is also some concern that developments, like Iran charging a toll fee to allow ships to pass through and skyrocketing insurance fees, will keep oil prices high.

“There are reports that Iran is charging fees to tankers going through the Hormuz Strait,” US President Donald Trump wrote on TruthSocial Thursday.

“They better not be and, if they are, they better stop now.”

But experts agree that those fees, rumoured to be about $2m per vessel, are not enough to move the needle on oil prices.

“What is causing oil prices to rise is not insurance. It’s about getting tankers through. Tolls won’t be the cost driver,” said Weitz.

‘Signs of strain’

Some of that reality was on display with the reopening of the strait, showing “signs of strain just hours after the ceasefire was announced”, said Usha Haley, W Frank Barton Distinguished Chair in international business at Wichita State University.

Compounding that problem was the fact that some countries, including Iraq, had shut down production because of limited storage capacity, further taking oil supplies offline.

“That will take weeks and months to reopen,” Haley added.

“It’s going to be a contested reopening … LNG [liquefied natural gas] will take months to rebalance because of the hits to infrastructure, and can take three to six months to normalise if everything else remains normal. And it’s not.”

Slower growth

On Thursday, International Monetary Fund managing director Kristalina Georgieva warned that the fund will downgrade its forecast for the world economy next week from the current expectation of 3.3 percent. “Growth will be slower – even if the new peace is durable,’’ Georgieva said.

While the war has hit most economies, “it hasn’t really affected the two primary [US] targets – Russia and China. Russia, in fact, has benefitted enormously, and Chinese ships have been allowed to go through,” said Haley.

The US has hit Russia with multiple sanctions for its war on Ukraine, including capping sales of Russian oil to undercut its income stream. Similarly, the first Trump administration put tariffs on China and curbed US exports of certain high-end technology, measures that were held up under the administration of former US President Joe Biden and further ratcheted up by Trump last year with his tariffs blitz.

But amid the war on Iran and the effective closure of the Strait of Hormuz, the US temporarily eased some sanctions on Russian oil, and countries desperate for crude have since paid far higher prices to Moscow than the subsidised energy that President Vladimir Putin’s government was previously offering them.

“We [the US] really need to decide what we want to do long-term, who our targets are. There’s got to be some coherence to what we want to do.”

For now, “an overhang of greater risk premium of supplies out of the Gulf means oil prices will remain higher than what they were before the attack started”, said Rachel Ziemba, adjunct senior fellow at the Center for a New American Security.

While it’s possible that some of the blocked oil and oil products could be released soon, providing a short boost of supplies in the coming days and weeks, “that would be a temporary support” and is still conditional on the ceasefire holding and converting to a broader deal, said Ziemba.

For now, she’s keeping an eye on Iraq to see if it strikes a side deal with Iran. Iraq, long a proxy battleground between the US and Iran, can produce at least 3.5 million barrels of oil per day, production that it had shut off because of limited storage capacity, said Ziemba.

Should that come back online, it will help oil flows and, eventually, prices. But the uncertainty of the truce and the history of attacks on Iraq mean that the future of the country’s oil production remains unclear. “In that environment, who wants to invest in scaling up production?” Ziemba wondered.

The Page Museum at the La Brea Tar Pits is closing down this summer in preparation for its first significant overhaul in its 50-year history.

The closure comes as its neighbor LACMA’s David Geffen Galleries finally open to the public after a two-decade campus transformation, and L.A. institutions make a concerted effort to bolster the city’s cultural scene in advance of the 2028 Olympic Games.

“We’re excited about bringing the entire campus together, and our part of it is really important to making it feel like you can easily move from LACMA over into the Tar Pits,” said Lori Bettison-Varga, president and director of the Natural History Museums of Los Angeles County, which oversees the Tar Pits. “So we worked closely with LACMA on that interface, and we’ll continue to do so.”

The last day to visit the Page Museum is July 6. Prior to closing, the Tar Pits will host a free public KCRW Summer Nights event June 12 and a members-only, disco-themed dance party June 27.

The museum renovation, like the recently announced Samuel Oschin Global Center for Ice Age Research, is part of the NHM’s broader Reimagine project — a yearslong site revamp led by architecture firm Weiss/Manfredi that will make the 13-acre Tar Pits campus more accessible and emphasize its function as the only active paleontological research hub located in a major urban area. For the Page Museum, that means a new and improved northwest entrance, expanded visible research labs and collections displays, an immersive theater and a rooftop terrace overlooking Hancock Park.

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“We’re going to have this more accessible, state-of-the-art museum that really tells the story of Ice Age Los Angeles and its relevance today in a way that it currently doesn’t,” Bettison-Varga said.

Bettison-Varga added that the revamped Page Museum will demonstrate “why this place is a worldwide treasure, and that it’s telling us about ecological and climate change that happened in the recent past and what we can learn from it.”

“All of this is about placing it in the context of relevance for today, not just a window into the past,” she said.

To date, the Reimagine project has secured more than $131 million, just over half of its $240 million fundraising goal.

Guests can still observe active excavation during the two-year museum closure — albeit from different vantage points — as researchers continue their work on site. Hancock Park will stay partially open, with new walking paths and outdoor features set to be phased in coordination with construction.

“[The renovation] is really going to position that museum with respect to the landscape and the fossils that are right from this site, while still preserving all the wonderful things that the community loves about the site: the frieze and the lake pit, the mammoth family, the visible excavations and, of course, the hills that everyone likes to roll down,” Bettison-Varga said.

Plus, with the Geffen Galleries opening, “it’s actually a good reminder for everyone to come see the vintage, iconic La Brea Tar Pits before the Page Museum closes,” Bettison-Varga quipped.

While the Page Museum is under construction, the grant-funded La Brea Tar Pits Mobile Museums will continue visiting schools and other public places throughout L.A. County.

The Page Museum opened in 1977 and currently houses more than 2 million specimens in its collection.

WASHINGTON — The Trump administration is arguing that a judge’s order to halt construction of a $400-million ballroom creates a security risk for President Trump as it asks a federal appeals court to pause the ruling.

In a motion filed Friday, National Park Service lawyers say that the federal judge’s order to suspend construction of the East Wing ballroom is “threatening grave national-security harms to the White House, the President and his family, and the President’s staff.”

“Time is of the essence!” the lawyers write, citing materials that will be installed to make a “heavily fortified” facility. The ballroom construction also includes bomb shelters, military installations and a medical facility, according to the filing. The ballroom is part of Trump’s plans to remake public buildings and institutions in Washington during his remaining years in office.

U.S. District Judge Richard Leon in Washington on Tuesday ordered the temporary pause of the construction project that has included demolishing the East Wing of the White House. He concluded that unless Congress approves the project, the preservationist group suing to stop it is likely to succeed on the merits of its claims because “no statute comes close to giving the President the authority he claims to have.”

The White House is owned by the federal government, not the president. Even the website of the National Park Service, which filed the motion, makes clear that “the White House is owned by the American people.”

The judge suspended enforcement of his order for 14 days, acknowledging that the administration would appeal his decision.

Leon’s ruling and the appeal come the same week a key agency tasked with approving construction on federal property in the Washington region gave final approval to the project.

In his ruling, Leon, who was nominated by Republican President George W. Bush, suspended enforcement of his order, recognizing that “halting an ongoing construction project may raise logistical issues.”

Leon also addressed national security in his ruling, saying that he reviewed information that the government privately submitted to him and concluded that halting construction wouldn’t jeopardize national security. He exempted any construction work that is necessary for the safety and security of the White House from the scope of the injunction.

Trump lashed out at the ruling, while noting that it would allow work on underground bunkers and other security measures around the White House grounds to continue — even though those will be paid for by taxpayers. Trump has pledged that he, along with private donors, will cover the costs for the ballroom itself.

But the National Park Service argues in its motion that the president has “complete authority to renovate the White House” and the current state of the grounds, which is an open construction site, make it harder to protect the White House.

“Canvas tents, which are necessary without a ballroom, are significantly more vulnerable to missiles, drones, and other threats than a hardened national security facility,” the motion says.

The Trump administration is asking the appeals court to make a decision on its request by Friday. It also asked that the 14-day suspension of Leon’s order be extended by two weeks so the case can be taken to the Supreme Court.

Groves writes for the Associated Press.

WASHINGTON — President Trump’s White House ballroom won final approval from a key agency on Thursday, days after a federal judge ordered a halt to construction unless Congress allows what would be the biggest structural change to the American landmark in more than 70 years.

The National Capital Planning Commission, the agency tasked with approving construction on federal property in the Washington region, went ahead with the vote because U.S. District Judge Richard Leon’s ruling on Tuesday affects construction activities, not the planning process, commission spokesperson Stephen Staudigl said.

But despite the agency’s approval, the judge’s ruling and the legal fight over the ballroom could stall progress on a legacy project that Trump is racing to see completed before the end of his term in early 2029. It’s among a series of changes the Republican president is planning for the nation’s capital to leave his lasting imprint while he’s still in office.

The vote by the 12-person commission, including three members appointed by Trump, had initially been scheduled for March but was pushed to Thursday because so many people signed up to comment on it at the commission’s meeting. The comments were overwhelmingly opposed to the ballroom.

Trump tweaks the ballroom design

Before voting Thursday, the commission considered some design changes to the 90,000-square-foot ballroom addition that Trump announced aboard Air Force One on Sunday as he flew back to Washington from a weekend at his Florida home.

He removed a large staircase on the south side of the building and added an uncovered porch to the west side. Architects and other critics of the project had panned the staircase as too large and basically useless since there was no way to enter the ballroom at the top.

Trump gave no reason for the changes, but a White House official said the president had considered comments from the National Capital Planning Commission and another oversight entity, the U.S. Commission of Fine Arts, which approved the project earlier this year, as well as members of the public.

The official, who was not authorized to publicly discuss the ballroom design and spoke on the condition of anonymity, said that additional “refinements” had been made to the building’s exterior and that lead architect Shalom Baranes would present them on Thursday.

The ballroom, now estimated to cost $400 million, has expanded in scope and price tag since Trump first announced the project last summer, citing a need for space other than a tent on the lawn to host important guests. Trump demolished the East Wing in October with little warning, and site preparation and underground work have been underway since then. Officials said above-ground construction would not start until April, at the earliest.

Judge says Trump isn’t the owner of the White House

The National Capital Planning Commission is chaired by Will Scharf, a top White House aide who has spoken in support of the ballroom addition. The president appoints three of the members, and Trump named two other White House officials along with Scharf.

Trump went ahead with the project before seeking input from the National Capital Planning Commission and the Commission of Fine Arts, which he reconstituted with allies and supporters.

The National Trust for Historic Preservation, a private nonprofit organization, sued after Trump demolished the East Wing last fall to build the ballroom addition — a space nearly twice as big as the mansion itself. Trump says it will be paid for with donations from wealthy people and corporations, including him, though public dollars are paying for underground bunkers and security upgrades on the White House grounds.

The trust sought a temporary halt to construction until Trump presented the project to both commissions and Congress for approval. Leon, the judge, agreed but said that his order would take effect in two weeks and that construction related to security would be allowed.

That work continued Wednesday as new photos by the Associated Press show the site of the former East Wing bustling with activity as cranes stretched toward the sky.

The judge, who was nominated to the bench by Republican President George W. Bush, wrote in his ruling: “The President of the United States is the steward of the White House for future generations of First Families. He is not, however, the owner!” He concluded that the National Trust for Historic Preservation was likely to succeed on the merits of its claims because “no statute comes close to giving the President the authority he claims to have.”

Trump disputed that Congress must also approve his project.

“We built many things at the White House over the years. They don’t get congressional approval,” he told reporters in the Oval Office after the ruling.

Representatives for the House and Senate committees with jurisdiction over the project did not return telephone messages seeking comment. Congress is on spring break.

Superville writes for the Associated Press.

District Judge Richard Leon says construction has to stop until Congress provides statutory authorisation.

A judge has ruled that US President Donald Trump cannot proceed with his planned $400m ballroom on the site of the White House’s demolished East Wing without approval from Congress.

District Judge Richard Leon on Tuesday granted a request for a preliminary injunction filed by the National Trust for Historic Preservation, which sued after alleging Trump had exceeded his authority by razing the historic East Wing and launching construction on the new building.

“I have concluded that the National Trust is likely to succeed on the merits because no statute comes close to giving the President the authority he claims to have,” Leon, an appointee of former Republican President George W Bush, wrote in the ruling.

“The President of the United States is the steward of the White House for future generations of First Families. He is not, however, the owner!” he said. “Unless and until Congress blesses this project through statutory authorization, construction has to stop!”

Leon said the order does not affect “construction necessary to ensure the safety and security of the White House”.

His ruling keeps the 90,000 square-foot (8,360 square-metre) ballroom project on hold while the lawsuit continues.

The judge said he was pausing his order for 14 days to allow the ⁠Trump administration to appeal. Hours later, the Justice Department filed an appeal at the Washington, DC-based US Court of Appeals for the District of Columbia Circuit.

Carol Quillen, president and CEO of the National Trust, welcomed Leon’s ruling.

“This is a win for the American people on a project that forever impacts one of the most beloved and iconic places in our nation,” Quillen said in a statement.

In a social media post, Trump called the National Trust a group of left-wing “lunatics” and said his ballroom is “under budget, ahead of schedule, being built at no cost to the Taxpayer, and will be the finest Building of its kind anywhere in the World”.

The Republican has championed the ballroom as a defining addition to the White House and a lasting symbol of his presidency.

WASHINGTON — A federal judge on Tuesday ordered the Trump administration to suspend its construction of a $400 million ballroom where it demolished the East Wing of the White House, barring construction work from proceeding without congressional approval.

U.S. District Judge Richard Leon in Washington granted a preservationist group’s request for a preliminary injunction that temporarily halts President Trump’s White House ballroom project.

Leon, who was nominated to the bench by Republican President George W. Bush, concluded that the National Trust for Historic Preservation is likely to succeed on the merits of its claims because “no statute comes close to giving the President the authority he claims to have.”

“The President of the United States is the steward of the White House for future generations of First Families. He is not, however, the owner!” the judge wrote.

Leon suspended enforcement of his order for 14 days, acknowledging that the case “raises novel and weighty issues, that halting an ongoing construction project “may raise logistical issues.” He also recognized that the administration is likely to appeal his decision.

The judge ruled that any construction work that’s necessary to ensure the safety and security of the White House is exempt from the scope of the injunction. Leon said he reviewed material that the government privately submitted to him before concluding that halting construction wouldn’t jeopardize national security.

Trump, in a social media post, criticized the trust for suing him over a project that he said is being built at no cost to taxpayers. “Doesn’t make much sense, does it?” he wrote.

The White House did not immediately respond to a request for comment on the ruling.

The preservationists sued to obtain an order pausing the ballroom project until it undergoes multiple independent reviews and receives congressional approval.

The White House announced the ballroom project over the summer. By late October, Trump had demolished the East Wing to make way for a ballroom that he said would fit 999 people. The White House said private donations, including from Trump himself, would pay for the planned construction of a 90,000-square-foot ballroom.

Trump proceeded with the project before seeking input from a pair of federal review panels, the National Capital Planning Commission and the Commission of Fine Arts. Trump has stocked both commissions with allies.

On Feb. 26, Leon rejected the preservationist group’s initial bid to temporarily halt the ballroom’s construction. He said the privately funded group had based its challenge on a “ragtag group” of legal theories and would have a better chance of success if it amended the lawsuit, which it did.

The administration has said above-ground construction on the ballroom would begin in April.

“We are two weeks away,” plaintiffs’ attorney Thaddeus Heuer said during a March 17 hearing. “The imminence is now imminent.”

During the hearing, Leon sounded skeptical of what he referred to as the government’s “shifting theories and shifting dynamics” for its arguments in the case.

“I don’t think it’s a new theory,” Justice Department attorney Jacob Roth told the judge.

Leon expressed frustration at Roth’s attempts to equate the massive ballroom project with relatively modest construction work at the White House under previous administrations.

“This is an iconic symbol of this nation,” the judge said.

The administration argued that other presidents didn’t need congressional approval for previous White House renovation projects, large and small.

“Many of those projects were highly controversial in their time yet have since become accepted — even beloved — parts of the White House,” government attorneys wrote.

Kunzelman writes for the Associated Press. AP writer Darlene Superville contributed to this report.