H. R. Haldeman was an American political operative who served as White House Chief of Staff under President Richard Nixon during the Watergate scandal. His role in the administration positioned him as a key figure in the events surrounding the scandal, which ultimately led to a significant constitutional crisis and Nixon's resignation. Haldeman was known for his close relationship with Nixon and was heavily involved in orchestrating the administration's response to the Watergate break-in and its subsequent fallout.