This unmissable collection edited by Gordon L. Crovitz and Jeremy Rabkin tackles the high-stakes battle over executive power and separation of powers, drawing on the Reagan administration's clashes with congressional activism, the War Powers Resolution, and foreign policy setbacks at the UN to reveal how legal constraints on the executive branch threaten presidential authority, executive leadership, and effective public policy, essential reading for anyone grappling with the balance of powers between the legislative and executive branches.