During his first term in office, Pres. George W. Bush made reference to the 'unitary executive' ninety-five times, as part of signing statements, proclamations, and executive orders. Pres. Barack Obama's actions continue to make issues of executive power as timely as ever. Unitary executive theory stems from interpretation of the constitutional assertion that the president is vested with the 'executive power' of the United States. In this groundbreaking collection of studies, eleven presidential scholars examine for the first time the origins, development, use, and future of this theory. "The...