the President of the United States to play in the organization. MacMahon concluded that it was inappropriate for the President to lead the WPA, and that an independent administrator should be chosen. Administration in Foreign Affairs MacMahon's work Administration in Foreign Affairs focused on how to effectively organize the government to create foreign policy. Clarence Thurber, writing in the Western Political Quarterly called the book "the best general volume that has appeared on the administration of foreign affairs in the United States", and other reviewers were similarly positive. In the book, MacMahon proposed that foreign policy problems should be handled by a single, centralized "Department of Foreign Affairs", which would handle all matters of foreign affairs, including all US programs operating abroad, particularly with regard to integrating economic policy into the State Department. This recommendation was "most controversial" and contradicted the findings of several government commissions on the subject. Federalism Late in his career, MacMahon developed an interest in federalism, publishing three books on the subject. His first work on federalism was the collection Federalism, Mature and Emergent, which he edited. In his introduction to the book, MacMahon wrote about the process of European integration, and the gradual move towards a federalist Europe. MacMahon also wrote two books on the subject of federalism himself: Delegation and Autonomy (1962) and Administering Federalism in a Democracy (1972). Delegation and Autonomy Delegation and Autonomy was based on a series of lectures that MacMahon delivered at the Indian Institute of Public Administration in 1960. Though the lectures were delivered in India, MacMahon focuses primarily on the American experience of federalism and decentralization. MacMahon focused on the economic and administrative challenges in decentralization. The book was not revolutionary, but received a good reception among reviewers, one of whom called it "a systematic compendium, rich in illustrations, but still richer in suggestive analysis." Administering Federalism in a Democracy Published in 1972, Administering Federalism in a Democracy was MacMahon's last major work. The work focused on the nature of American federalism, with an emphasis on the institutions involved. The book was not as well received as many of MacMahon's earlier pieces, and was criticized for avoiding many of the relevant issues in American politics such as racism and the differences between the states in America. William Stewart wrote that the book "presents material which is already available elsewhere" and avoids "the issues ... at the heart of