The DOJ is defending the construction of a 400 million dollar White House ballroom, arguing that courts lack the authority to halt the security project.The National Trust for Historic Preservation sued to stop the work, claiming the administration bypassed Congress and historic review laws by demolishing the East Wing.Judges are currently evaluating the balance between executive power for national security and the legal requirement for congressional oversight on federal property.The three-judge panel concluded the appellate hearing without issuing an immediate ruling on the legality of the project.