Political Scientist Steve Knott has a new book that focuses on conspiracy theories within the American presidency and often promulgated by the president himself. This is not, per se, a book about conspiracy theories in general, but about the narratives that presidents have used—that constitutes a kind of conspiracy thinking—to engage voters and push for particular policy ideas and outcomes. Conspirator in Chief: The Long Tradition of Conspiracy Theories in the American Presidency (UP Kansas, 2025) spans the entire history of the United States, paying close attention to presidents Thomas Jefferson, Andrew Jackson, Andrew Johnson, Woodrow Wilson, Franklin Roosevelt and Harry Truman, Richard Nixon, and finally Donald Trump. These particular presidents, both during their administrations and after, made use of conspiracies and/or demagogic rhetoric to encourage their supporters and to appeal to public fears. As Knott notes, Alexander Hamilton warns against this in both Federalist #1 and Federalist #85, wrapping the discussion of the new Constitution in concerns with regard to demagoguery. So many of the conspiracies that are pushed by presidents have at their base racism and an effort to fan the flames of racial fear and resentment. Jefferson, Jackson, Johnson, and Wilson all made use of racism as a part of their conspiracies.

Conspirator in Chief: The Long Tradition of Conspiracy Theories in the American Presidency also mines the deep vein of conspiracy theories around moneyed and elite interests, since many presidents cast these interests as predatory and “out to get” the average citizen. This is another constant approach among the presidents from the early days of the republic through to our contemporary “conspirator in chief” Donald Trump. Part of the way that presidents use these kinds of conspiracies is to set up a dichotomy of those who are with the president and those who are against the president, and this latter group is, inevitably, also opposed to the country as a whole and the way of life in the United States. Knott explains that this was the kind of rhetoric that both FDR and Truman used in their implementation of this kind of conspiratorial rhetoric. This also leans on national security as a point of contention, and that those in opposition to the president or the president’s policies are also potential threats to the republic. This is another dimension that Trump builds on in his use of this kind of rhetoric and division.

In the final part of Conspirator in Chief, Knott sketches out those presidents who go far in standing against this kind of language and these kinds of attacks. Included in this grouping are John Quincy Adams, Abraham Lincoln, William Howard Taft, and John F. Kennedy, among others. These individuals leaned into reason more than rumormongering, examining their own biases, and also pointing to the conspiracies that others were advocating. While we learn a great deal about demagogic presidents who stirred up conspiracies based in racism, fear, antisemitism, and classism, we also learn about those who operated differently, who tried to protect the country from such divisive rhetoric.

Lilly J. Goren is a professor of political science at Carroll University in Waukesha, WI. She is co-host of the New Books in Political Science channel at the New Books Network. She is co-editor of The Politics of the Marvel Cinematic Universe Volume I: The Infinity Saga (University Press of Kansas, 2022), and of The Politics of the Marvel Cinematic Universe Volume II: Into the Multiverse (University Press of Kansas, 2025) as well as co-editor of the award winning book, Women and the White House: Gender, Popular Culture, and Presidential Politics (University Press of Kentucky, 2012). She can be reached @gorenlj.bsky.social

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