David Barron is a United States Circuit Judge for the United States Court of Appeals for the First Circuit and former S. William Green Professor of Public Law at Harvard Law School. He previously served as the Acting Assistant Attorney General of the Office of Legal Counsel at the United States Department of Justice. He is coauthor, with Martin Lederman, of the article “The Commander in Chief at the Lowest Ebb.” In Waging War: The Clash Between Presidents and Congress, 1776 to ISIS (Simon and Schuster) Barron offers A timely account of a raging debate: The history of the ongoing struggle between the presidents and Congress over who has the power to declare and wage war.