Trump was sued on Friday by preservationists asking a federal court to halt his White House ballroom project. (File Photo)

President Donald Trump was sued on Friday by preservationists asking a federal court to halt his White House ballroom project until it goes through multiple independent reviews and wins approval from Congress.

The National Trust for Historic Preservation is asking the US District Court to block Trump’s White House ballroom project, which already has involved razing the East Wing, until it goes through comprehensive design reviews, environmental assessments, public comments and congressional debate and ratification.

The National Trust, a privately funded organization, argues that Trump, by fast-tracking the project, has committed multiple violations of the Administra

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