In 1934, Butler came forward and reported to the U.S. Congress that a group of wealthy pro-Fascist industrialists had been plotting to overthrow the government of President Franklin D. Roosevelt in a military coup. Even though the congressional investigating committee corroborated most of the specifics of his testimony, no further action was taken.
Smedley Butler was noted for his outspoken anti-interventionist views, and his book "War Is a Racket".
http://en.wikipedia.org/wiki/Smedley_ButlerWar Is a Racket (1935) is a short work by former U.S. Marine Major General Smedley Darlington Butler, in which Butler discusses how business interests have commercially benefited from warfare. Butler points to a variety of examples, mostly from World War I, where industrialists whose operations were subsidised by public funding were able to generate substantial profits essentially from mass human suffering.
http://en.wikipedia.org/wiki/War_Is_a_Racket