Donald Trump’s longtime biographer has a hunch about who leaked his secret Air Force One decoy maneuver to The Washington Post. The Secret Service certainly would not leak this,” he said. Win McNamee/Getty ImagesThe White House did not return a request for comment about Wolff’s theory. “This is both a kind of cover-up by the president and the White House and the Secret Service,” Wolff said. “And yet, once again, the White House press corps is missing the story.”