This book presents the most significant speeches and writings of American constitutional conservatives during the period 1900-1930. Figures such as William Howard Taft, Calvin Coolidge, Elihu Root, Warren Harding, and David Jayne Hill present the alternative arguments that challenged the leading Progressive views of the period. Issues such as natural rights, civil rights, economic regulation, federalism, executive power, political parties, and foreign policy are addressed in these primary sources, many of which are reproduced for the first time. The readings in this book are relevant not only for understanding the political issues of the Progressive Era, but also for understanding the foundations of contemporary American conservatism.