Clinton asked Cooper, along with Doug Band, to move to New York to play a critical role in his post-presidential activities.
In his current role, Cooper has traveled with Clinton on hundreds of trips domestically and internationally.
President Clinton notes Cooper's critical role in the formation of the memoir in the first sentence of the book's "Acknowledgments."
In addition to his noted role in the publication of Clinton's memoirs, Cooper is also a frequent travel partner of the President.
Most notably, Cooper accompanied the President's delegation to North Korea when Clinton successfully secured the release of two American journalists, Laura Ling and Euna Lee, in August 2009.