[10][verification needed] He received the James Harvey Robinson Prize for teaching from the American Historical Association in 1997.

He analyzes the role religion played in political conflict, arguing that it had a major influence on party allegiances.

[14][15] A review in the Indiana Magazine of History criticised the work for attempting to tackle too broad a subject area and questioned Jensen's use of evidence to ascertain religious preferences.

"[19] Writing in the Journal of the Illinois State Historical Society John Hoffman described the work as "a balanced account of the state, keeping Chicago in proportion to downstate, and the whole in alignment with American history—as 'a' microcosm of the Union, not 'the' microcosm...his Illinois is not Chicago writ large or America writ small.

It began in 1992 as an initiative by Jensen at the History department at the University of Illinois at Chicago to assist historians "to easily communicate current research and teaching interests; to discuss new approaches, methods and tools of analysis; to share information on access to library catalogs and other electronic databases; and to test new ideas and share comments on current historiography.

[3] In 1997 H-Net won the American Historical Association's James Harvey Robinson Prize, awarded for innovative methods of history teaching.

"[18] In 1994, H-Net began a move to Michigan State University, where historian Mark Kornbluh had secured institutional support.

[25] Jensen's article about anti-Irish sentiment, "No Irish Need Apply: A Myth of Victimization", was published in the Journal of Social History in December 2002.

[26] In July 2015, the same journal published a rebuttal to Jensen's thesis written by Rebecca Fried, an eighth-grade student at Sidwell Friends School in Washington, DC.

[27][28][29][30] Before submitting her article for publication, Fried consulted with the historian Kerby A. Miller, who had long disagreed with Jensen's thesis.

[30] Fried's paper provided examples of "No Irish Need Apply" in newspaper archives, contesting Jensen's thesis that there was no evidence of the same.