Secrecy surrounding White House security makes details hard to come by, but President Donald Trump's court fight over his $400 million ballroom casts some light on an underground bunker at the site that has had a role in history.
The bunker emerged in the Trump administration's court fight against the National Trust for Historic Preservation, which is challenging the 90,000-square-foot (8,400-square-meter) ballroom project. A federal appeals court last week permitted the president to continue with construction of the project at the site of the former East Wing, which was demolished last fall.
