A federal appeals panel has issued a ruling that stops President Donald Trump from moving forward with construction on a planned White House ballroom. The court determined that the project, estimated at $400 million, lacks the necessary congressional authorization.

The judges stated that the president overstepped his executive authority by attempting to advance the project on his own. This construction was intended to be privately funded, yet the court emphasized that only Congress holds the power to approve such additions to the White House property.

The court order is set to take effect in two weeks. This delay provides the White House with a window to seek further review by the Supreme Court. The project has faced scrutiny regarding the use of the site and the scope of presidential powers in modifying government buildings.