Jack Goldsmith, a member of Hoover’s Task Force on National Security and Law, discusses his recent book Power and Constraint and the threats, decisions, and pressures that are part of being commander in chief. Goldsmith notes that the powers our post-9/11 commanders in chief assumed have been met with thousands of barely visible legal and political constraints—enforced by congressional committees, government lawyers, courts, and the media—that have transformed our unprecedentedly powerful presidency into one that is also unprecedentedly accountable.