Ron Kessler...has enjoyed a reputation for solid reporting over the past four decades. Lloyd Grove, The Daily Beast

Kessler's such a skilled storyteller, you almost forget this is dead-serious nonfiction... Newsweek
 
[Ronald Kessler] is the man who broke the story about the [Secret Service prostitution] episode in Cartagena.... New York Times
 
His [Kessler's] book quotes both flattering and unflattering observations about presidents of both parties. FactCheck.org

[Kessler has] done groundbreaking work over the years, [resulting in] major scoops. Michael Isikoff, Chief Investigative Correspondent, Yahoo! News

A Justice Department official...noted that the original charges against [FBI Director William] Sessions came not from FBI agents but from a journalist, Ronald Kessler [who uncovered the abuses while writing a book about the FBI, leading to Sessions' dismissal]. Washington Post

[Ronald Kessler] is one of the nation's top investigative journalists. Fox & Friends 
 
Ron Kessler appears to get everything first. Slate