https://cdnph.upi.com/ph/st/th/3821786118394/2026/upi/77df828a6e005df6c0e620651eaabe02/v1.5/US-appeals-court-blocks-Trumps-400-million-White-House-ballroom.jpg" /> A federal appeals court ruled that U.S. President Donald Trump's $400 million ballroom at the White House is unlawful and blocked further work on it.