Sarah E. Kreps is the John L. Wetherill Professor in the Department of Government at Cornell University, where she is also an adjunct professor of law and the Director of the Cornell Tech Policy Institute. She is the author of five books, including, most recently, Social Media and International Relations. Douglas L. Kriner is the Clinton Rossiter Professor in American Institutions in the Department of Government at Cornell University. He is the author of five books, including, most recently, The Myth of the Imperial Presidency: How Public Opinion Checks the Unilateral Executive.