Calvin Coolidge to work jointly with Edward T. Clark, a Massachusetts Republican organizer whom he retained from his vice-presidential staff, as Secretaries to the President (a position equivalent to the modern White House Chief of Staff). Perhaps the most powerful person in Coolidge's Cabinet was Secretary of the Treasury Andrew Mellon, who controlled the administration's financial policies and was regarded by many, including House Minority Leader John Nance Garner, as more powerful than Coolidge himself. Secretary of Commerce Herbert Hoover also held a prominent place in Coolidge's Cabinet, in part because Coolidge found value in Hoover's ability to win positive publicity with
John Calvin Coolidge Sr. John Calvin Coolidge Sr. John Calvin Coolidge Sr. (March 31, 1845 – March 18, 1926) was an American politician and businessman from Vermont, and the father of John Calvin Coolidge Jr., the 30th President of the United States. He administered the presidential oath of office to his son at their family homestead on the early morning of August 3, 1923, following the death of President Warren G. Harding. Born in Plymouth, Vermont, John C. Coolidge was a farmer and store owner, and worked at a variety of other occupations, including banker and insurance broker. In addition, he was a veteran