Campbell, John L.: - John L. Campbell is Class of 1925 Professor and Professor of Sociology Emeritus at Dartmouth College. A leading scholar of how institutions and politics affect policymaking and economic performance in advanced capitalist countries, he is the author of several books including Institutions Under Siege: Donald Trump's Attack on the Deep State (2023), What Capitalism Needs: Forgotten Lessons of Great Economists (2021), and American Discontent: The Rise of Donald Trump and Decline of the Golden Age (2018).