Sweet has served in a variety of professional leadership positions. At UW-Madison, he directed the African Studies Program (2012-2013), chaired the Department of History (2013-2016), and chaired the Department of Spanish and Portuguese (2017-2020). He is a book series editor for the University of Wisconsin Press. He also sat on the editorial boards of Luso-Brazilian Review, The Americas, and Journal of Africana Religions. He was an elected Councilor of the Research Division of the American Historical Association (2016-2019). Currently, he is the president of the American Historical Association (AHA), the largest organization of its kind in the world and the oldest professional organization of historians in the United States. Read here for his monthly presidential columns in AHA’s news magazine, Perspective on History (January 2022 to the present).