http://en.wikipedia.org/wiki/Business_Plothe Business Plot, The Plot Against FDR, or The White House Putsch, was a conspiracy involving several wealthy businessmen to overthrow the presidency of Franklin D. Roosevelt in 1933.
Purported details of the matter came to light when retired Marine Corps Major General Smedley Butler testified before a Congressional committee that a group of men had attempted to recruit him to serve as the leader of a plot and to assume and wield power once the coup was successful. Butler testified before the McCormack-Dickstein Committee in 1934 [1]. In his testimony, Butler claimed that a group of several men had approached him as part of a plot to overthrow Roosevelt in a military coup. One of the alleged plotters, Gerald MacGuire, vehemently denied any such plot. In their final report, the Congressional committee supported Butler's allegations on the existence of the plot,[2] but no prosecutions or further investigations followed, and the matter was mostly forgotten.
General Butler claimed that the American Liberty League was the primary means of funding the plot. The main backers were the Du Pont family, as well as leaders of U.S. Steel, General Motors, Standard Oil, Chase National Bank, and Goodyear Tire and Rubber Company.
A BBC documentary claims Prescott Bush, father and grandfather to the 41st and 43rd US Presidents respectively, was also connected.[3]