| Theodore Roosevelt | 1901 - 1909 |
| Wlliam Howard Taft | 1909 - 1913 |
| Thomas Woodrow Wilson | 1913 - 1921 |
| Warren Harding | 1921 - 1923 (śmierć) |
| John Calvin Coolidge | 1923 - 1929 |
| Herbert Clark Hoover | 1929 - 1933 |
| Franklin Delano Roosevelt | 1933 - 1945 |
| Harry Truman | 1945 - 1953 |