1. Theodore Roosevelt (1901-1909). Regulation of trusts
Anthracite Coal Strike
Panama Canal
Monroe Doctrine and the Roosevelt corollary
Railroad regulation
Simplified spelling
The Brownsville episode
Conservation of natural resources
Woman suffrage
2. William Howard Taft (1909-1913). Continuing the conservation agenda
Dollar diplomacy
Judicial recall
Trusts and the Sherman Antitrust Act
Future of the Republican Party and the 1912 election
Presidential power
3. Woodrow Wilson (1913-1921). Tariff reduction
Tariff Reserve Act
Segregation in the federal government
U.S.-Mexican relations
Immigration literacy test
Regulation of child labor
U.S. neutrality in the Great War
U.S. entry into the Great War
Versailles Treaty and the League of Nations
4. Warren G. Harding (1921-1923). Compensatory Treaty with Colombia
Racial equality
Restoration of tariffs
Washington Conference on the Limitation of Armament
The soldiers' bonus
5. Calvin Coolidge (1923-1929). Tax relief
National Origins Act
U.S. intervention in Nicaragua
McNary-Haugen Bill
Kellogg-Briand Peace Pact.