Kevin M. Kruse

In June 2022, Phillip W. Magness (of the American Institute for Economic Research) in Reason accused Kruse of plagiarism in his 2000 doctoral dissertation, his 2005 book White Flight, and other works. In The Daily Princetonian: "Kruse expressed 'surprise' at the allegations and attributed the lack of citations in one instance to an inadvertent oversight." The Daily Princetonian and The Chronicle of Higher Education, which discussed the story, both noted past animosity between Magness and Kruse on politically fraught academic matters.

In October 2022, both Cornell, where he wrote his dissertation, and Princeton, where he is employed, ultimately determined that these were "citation errors" and did not rise to the level of intentional plagiarism. Cornell found no intent of plagiarism and took no further action in the matter; Princeton's Dean of Faculty wrote that Kruse's citations could have been formatted better, but that the mistakes were "honest" and "the result of careless cutting and pasting" with "no attempt to conceal an intellectual debt." Kruse's primary accuser Magness "responded to the decision with indignation," according to conservative publisher National Review, and he posted fresh accusations of plagiarism in other works by Kruse on Twitter.

In 2019, Kruse co-authored Fault Lines: A History of the United States Since 1974 with Julian E. Zelizer; the book is based on the course that they created together at Princeton University, The United States Since 1974.

In 2019 Kruse contributed an article to The 1619 Project titled: "A traffic jam in Atlanta would seem to have nothing to do with slavery. But look closer..." (or "How Segregation Caused Your Traffic Jam"). The article discussed how Jim Crow segregation, the building of the highway system in the United States, and opinions on public transit have affected African American communities, particularly in Atlanta and other Southern cities. A slightly modified version was later published as "Traffic" in the 2021 companion volume The 1619 Project: A New Origin Story.

In July 2018, Kruse posted a Twitter thread naming several Dixiecrats who had switched their political affiliations to the Republican Party in response to a tweeted challenge by right-wing political commentator Dinesh D'Souza to name the Dixiecrats who switched to the Republican Party in protest of the Democratic Party's embrace of the civil rights movement. Later, D'Souza falsely claimed that in the time of Abraham Lincoln, the Republican Party supported protecting the rights of legal immigrants; Kruse responded by noting that there was no distinction between legal and illegal immigrants at the time. Kruse gained additional prominence from these tweets, with his Twitter following growing to 160,000 over the next three months.

In 2015, Kruse wrote One Nation Under God: How Corporate America Invented Christian America. Historian D. G. Hart wrote: "America was founded in 1776, but it was only in 1953, with the inauguration of Dwight David Eisenhower as the 34th president, that it became a Christian nation. Such is Kevin M. Kruse's thesis and, after reading “One Nation Under God,” it makes perfect sense." Hart concluded that the book "is an important and convincing reminder that the roots of Christian America were cultivated well before the era of the religious right. What it fails to do is to supply much evidence of the subtitle's claim that “Corporate America Invented Christian America”".

Kruse joined Twitter in February 2015 at the request of the publisher of One Nation Under God. In September 2015, Kruse posted his first Twitter thread in response to a tweet by Joe Scarborough describing Barack Obama as the "most partisan president ever"; in the thread, Kruse argued that Obama's early years in office "showed bipartisan outreach we have not seen in the modern era before".

In 2005, Kruse wrote White Flight: Atlanta and the Making of Modern Conservatism, which explores the links between the resistance to desegregation and the rise of modern conservatism. The book won the 2007 Francis B. Simkins Award for best first book by an author in the field of southern history from the Southern Historical Association and the 2007 Malcolm and Muriel Barrow Bell Award for the best book on Georgia History from the Georgia Historical Society. It was also co-winner of the 2007 Best Book Award in Urban Politics from the Urban Politics Section of the American Political Science Association.

In 2000, Kruse joined the faculty of the Princeton University Department of History. In 2019, Kruse was awarded the Guggenheim Fellowship in General Nonfiction by the John Simon Guggenheim Foundation to support archival research for his next book, The Division: John Doar, the Justice Department, and the Civil Rights Movement. In May 2020, Kruse was elected to the Society of American Historians.

Kevin Michael Kruse (born 1972) is an American historian and a professor of history at Princeton University. His research interests include the political, social, and urban/suburban history of 20th-century America, with a particular focus on the making of modern conservatism. Outside of academia, Kruse has attracted substantial attention and following for his Twitter threads where he provides historical context and applies historical research to current political events.

Michaelangelo Matos, writing for Rolling Stone, praised the book as "a sharp summation of how we moved from post-New Deal liberalism to an increasingly hard-right philosophy", saying that "its deep detail and taut-as-a-thriller pacing make up for the repetition" of its premise that "from the 1970s on, the United States would seem less and less united with each passing decade”. Barton Swaim, writing for The Wall Street Journal, was more critical, saying: "In “Fault Lines,” conservatives are almost invariably the aggressors in the culture wars and so primarily responsible for the widening gulf between Americans of left and right." He concluded, "Messrs. Kruse and Zelizer miss perhaps the most relevant fault line of our time: the line between disdainful elites who equate reality with their own interpretations and everybody else."

Writing for The New York Times, historian Michael Kazin said: "Kruse tells a big and important story about the mingling of religiosity and politics since the 1930s. Still, he oversells his basic premise. Americans easily accepted placing God's name on their currency and in the oath children recite every school day because similar invocations were already routine in public discourse — from the Declaration's reference to the “unalienable Rights” endowed by the “Creator” to the official chaplains who have opened sessions of the House and Senate with a prayer since 1789."

In addition to authoring the books listed below, Kruse has co-edited four books, Fog of War: The Second World War and the Civil Rights Movement, Spaces of the Modern City: Imaginaries, Politics and Everyday Life, The New Suburban History, and Myth America: Historians Take On the Biggest Legends and Lies About Our Past. He also contributed a chapter to The 1619 Project: A New Origin Story.