A federal appeals court orders President Donald Trump’s administration to stop above-ground construction of a $400 million ballroom planned for the site of the White House’s demolished East Wing. Multiple outlets report the decision follows an earlier preliminary injunction and directs a halt in construction while the legal challenge proceeds.

The court’s reasoning centers on congressional authority, with the panel saying presidents are “temporary tenant[s], not the owner[s], of the White House.” Outlets also note the case is tied to a lawsuit by the National Trust for Historic Preservation, after the administration demolished the East Wing and moved forward without what challengers consider required authorization. Reporting describes a 2-to-1 ruling by a three-judge panel.

Trump and his administration dispute the basis for the halt and argue the project is needed for security and operational purposes. Several outlets add that Trump vows to appeal, including to the U.S. Supreme Court, and that the appeals court provides a 14-day hold to allow an appeal. Other coverage notes Congress declined to approve related funding earlier this year, reinforcing the dispute over whether the executive branch can proceed without legislative backing.