A federal appeals court has temporarily allowed the construction of President Donald Trump's White House ballroom to proceed, pending a court ruling that exceeds the president's authority. The decision means construction can continue until April 17 while the court reviews the issue further. The administration had argued that the ballroom and other temporary measures are needed for the safety and security of the president, his family, and others. However, the court ruled that the court could not determine how these issues might affect the outcome of the case. The National Trust for Historic Preservation is challenging the project, arguing that congressional approval is required for construction projects on federal property and that the administration's security concerns are exaggerated.