Less than 72 hours after a man was arrested for trying to assassinate Donald Trump at the White House, the justice department rushed to court to make an extraordinary filing. The subject of the emergency was a lawsuit by the National Trust for Historic Preservation seeking to halt the construction of a new White House ballroom. A federal judge ruled earlier this month that construction had to stop, though an appeals court later paused that ruling. Filled with vitriolic language, the purpose of DoJ’s Monday filing was to make clear that the failed assassination attempt only strengthened the administration’s argument for why a new ballroom was needed.…