"The White House Plumbers"
"The Plumbers," as they were commonly termed, were a White House Special Investigations Unit, established by President Richard Nixon in July, 1971. This was a reaction after Daniel Ellsberg had leaked what became known as The Pentagon Papers to the New York Times, and the Times began publishing excerpts from them in June, 1971.
Members of the Plumbers unit were responsible for the Watergate break-ins that resulted in the scandal that eventually brought down the Nixon presidency.