Financier Andrew Mellon was born in Pittsburg Pennslyvania on March 24, 1855. He showed an early interest in business and quickly took over his father's bank. He financed some of the biggest companies as they grew. By 1920 when he was appointed Secretary of the Treasury under President Harding he was one of the richest people in America.. His was a family banking fortune that Mellon used to advance his interests in coal, aluminum and oil.
Although opinion is divided about Mellon's motives, it is clear that his priority was tax reduction for the wealthy. He was also instrumental in blocking American participation in the League of Nations after World War I.