The Obama administration is shaping up to be one of the most consequential in recent American history. In the revised edition of this book, now including new two chapters assessing the Obama administration and federalism and Obama as commander-in-chief, a diverse group of presidential scholars steps back from the partisan debate to consider the Obama presidency through the lens of the U.S. Constitution's theory, structure, and powers. This timely look at the Obama presidency establishes a constitutional yardstick of interest to scholars of the presidency, constitutional thought, and American political thought.