After only four months as VCSA, Haig returned to the Nixon administration at the height of the Watergate affair as White House chief of staff in May 1973. Retaining his Army commission, he remained in the position until September 21, 1974, ultimately overseeing the transition to the presidency of Gerald Ford following Nixon's resignation on August 9, 1974.Haig has been largely credited with keeping the government running while President Nixon was preoccupied with Watergate and was essentially seen as the "acting president" during Nixon's last few months in office. During July and early August 1974, Haig played an instrumental role in finally persuading Nixon to resign. Haig presented several pardon options to Ford a few days before Nixon eventually resigned. In this regard, in his 1999 book "Shadow", author Bob Woodward describes Haig's role as the point man between Nixon and Ford during the final days of Nixon's presidency. According to Woodward, Haig played a major behind-the-scenes role in the delicate negotiations of the transfer of power from President Nixon to President Ford. Indeed, about one month after taking office, Ford did pardon Nixon, resulting in much controversy.