His teaching and research interests focus on presidential power under the U.S. Constitution. Edelson graduated from Brandeis University and Harvard Law School, and practiced law before joining AU's faculty. His first book, Emergency Presidential Power from the Drafting of the Constitution to the War on Terror, was published by the University of Wisconsin Press in 2013. His second book, Power Without Constraint: The Post 9/11 Presidency and National Security, was published in 2016. Eddelson frequently writes op-eds on current issues related to presidential power. including in the Baltimore Sun, Los Angeles Times, New York Daily News, and Marketwatch.