"Timely and balanced, Knott’s analysis calls out the serious dangers to our Republic of presidents using conspiracy theories as tactics to distract and divide Americans. As his engaging review through presidential history shows, it did not start with President Trump but has now reached a critical point with potentially lasting effects on the stability of our democratic institutions and processes. I cannot recommend this highly enough to students and teachers of US government and politics."—Mark J. Rozell, coauthor of Executive Privilege: Presidential Power, Secrecy and Accountability"Conspiratorial thinking has shadowed the American presidency from the early republic until the present. Knott vividly reveals how America’s presidents, from Jefferson to Jackson, from Truman to Trump, have practiced politics through conspiracy. This is essential reading for anyone seeking the deep roots of today’s poisonous political climate."—Jordan Taylor, author of Misinformation Nation: Foreign News and the Politics of Truth in Revolutionary America"Stephen F. Knott teaches much about the history of conspiracy and conspiratorial thinking in American presidential politics. This is an important, provocative book that deserves wide readership in and out of the academy. Readers will be surprised and challenged by Knott’s thoughtful interpretation of past conspirators in chief, and they will learn much about presidential politics in the twenty-first century."—Nancy Beck Young, author of Two Suns of the Southwest: Lyndon Johnson, Barry Goldwater, and the 1964 Battle between Liberalism and Conservatism"Steve Knott has both a magisterial knowledge of the U.S. presidency and a deep loyalty to truly American ideals. Both of these virtues shine from every page of this book, which should be read by anyone who cares about trust and decency in the American constitutional order."—Tom Nichols, Staff Writer, The Atlantic"Conspirator in Chief is a fascinating deep dive into the history of conspiracy theories promulgated by US presidents. In the internet age, we are used to thinking of conspiracy theories as a distinctly modern problem. Knott shows how they have been weaponized by presidents going back to Andrew Jackson, and along the way illuminates just how Donald Trump’s online firehose of conspiracies and misinformation serve his political aims. Excellent reading for US history buffs and those who want to understand our current conspirator-in-chief alike."—Cailin O’Connor, coauthor of The Misinformation Age: How False Beliefs Spread