Noted political scientist Benjamin Ginsberg has written an essential text for courses on the United States presidency. An invaluable resource, Ginsberg's comprehensive analysis emphasizes the historical, constitutional, and legal dimensions of presidential power. He explores the history and essential aspects of the office, the president's relationship to the rest of the executive branch and to a subordinated Congress, and the evolution of the American president from policy executor to policy maker. Compelling photo essays delve into topics of special interest, including First Spouses, Presidential Eligibility, and Congressional Investigations of the White House.