Professor McCool’s research focuses on water resources, Indian voting and water rights, and public lands policy. His books include: River Republic: The Fall and Rise of America’s Rivers (Columbia University Press 2012); The Most Fundamental Right: Contrasting Perspectives on the Voting Rights Act (Indiana University Press 2012, edited); Native Vote: American Indians, the Voting Rights Act, and Indian Voting (Cambridge University Press 2007, co-authored); and Native Waters: Contemporary Indian Water Settlements and the Second Treaty Era (University of Arizona Press 2002). His most recent book, co-edited, is: Vision and Place: John Wesley Powell and Reimagining the West (Univ. of California Press, 2020). He co-authored the 2020 report on Native American voting, “Obstacles at Every Turn: Barriers to Political Participation Faced by Native Voters.” He has served as an expert witness in 17 voting rights cases.