Actually congressional testimony is easily buried -
The Business Plot was an alleged political conspiracy in 1933 in the United States. Retired Marine Corps Major General Smedley Butler claimed that wealthy businessmen were plotting to create a fascist veterans' organization with Butler as its leader and use it in a coup d'état to overthrow President Franklin D. Roosevelt. In 1934, Butler testified before the United States House of Representatives Special Committee on Un-American Activities (the "McCormack-Dickstein Committee") on these claims.[1] No one was prosecuted.
At the time of the incidents, news media dismissed the plot, with a New York Times editorial characterizing it as a "gigantic hoax".[2] While historians have questioned whether or not a coup was actually close to execution, most agree that some sort of "wild scheme" was contemplated and discussed.[3][4][5][6]