Sharyl Attkisson was one of the most distinguished investigative journalists in television news, covering everything from the dangers of certain prescription drugs to mismanagement at the Red Cross to TARP to K Street. Over a career that spanned more than 20 years at CBS News, she received numerous awards for her work, including multiple Emmys. In her memoir Stonewalled: My Fight for Truth against the Forces of Obstruction, Intimidation, and Harassment in Obama’s Washington, Attkisson looks back on the final years of her network career. One concludes from her book that Attkisson encountered more difficulty practicing her profession at...