With FDR, LBJ, and Nixon in the White House are you sure of that? Try this: Page 244 of WATERGATE: THE HIDDEN HISTORY by Lamar Waldron.
The funny part about this is, Califano, a high-ranking Democrat operative who was DNC attorney during Watergate, was working on a Robert Kennedy covert operation involving a coup against Castro at the Pentagon.
Nothing new under the sun.