NEW YORK – Bob Woodward says he hadn't planned on releasing audio tapes of his interviews with President Donald Trump for his book “Rage” until CNN reporter Jamie Gangel and the author's wife convinced him. “The microphone really is a microscope.”Gangel worked in tandem with Elsa Walsh, herself an accomplished reporter who helps edit her husband's books, to encourage release of the tapes. For a CNN reporter to help push a news source toward a decision that amplifies the impact of a book that is highly critical of Trump may open Gangel to some criticism. But it's an important role for journalists to advocate for public release of as much information as possible, said Kathleen Culver, director of the Center for Journalism Ethics at the University of Wisconsin. CNN chief Jeff Zucker, who was interviewing Woodward at the conference, also said that “we're all better” for Gangel pressing the point.