An excavator works to clear rubble after the demolition of the East Wing of the White House, on October 23. Eric Lee/Getty Images

The nation’s top historic preservation group is suing the Trump administration to block construction of President Donald Trump’s plans for a massive new White House ballroom until review boards weigh in on the project.

The National Trust for Historic Preservation, a congressionally chartered non-profit tasked with preserving historic buildings, said it was bringing the suit because its previous letter urging a pause on the project had gone unheeded.

The group, which the construction project is “unlawful,” is asking the US District Court for the District of Columbia to halt further activity until the administration complies with review processes, including

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