"That Used To Be Us" by Thomas L. Friedman and Michael Mandelbaum is a thought-provoking book that provides an insightful analysis of the challenges facing the United States in the 21st century.

Through a combination of extensive research and powerful storytelling, the authors argue that America is facing four major challenges: globalization, rapid technological advancement, unsustainable debt, and political polarization.

Friedman and Mandelbaum emphasize the urgent need for the United States to address these issues and offer concrete solutions to help restore America's competitive edge and secure a prosperous future for its citizens.

They highlight the importance of investing in education, innovation, and infrastructure, while also emphasizing the need for a more functional political system that promotes long-term thinking and cooperation across party lines.

Drawing from historical events and personal anecdotes, the authors paint a comprehensive picture of the current state of the nation, urging Americans to reclaim their collective sense of responsibility and take action to shape a better future.

"That Used To Be Us" is a compelling call to arms, challenging readers to confront the reality of America's challenges and inspiring them to work towards a brighter and more sustainable future for the country.