; (B) any challenges experienced by agencies in implementing this Act and the amendments made by this Act; and (C) any suggestions or modifications to enhance compliance with this Act and the amendments made by this Act, including best practices for agencies to follow. (3) Sunset of Plum Book Beginning on January 1, 2024, such website shall serve as the public directory for policy and supporting positions in the Government, and the publication entitled United States Government Policy and Supporting Positions , commonly referred to as the Plum Book , shall no longer be issued or published.