At the meeting, Mayo made the mistake of complaining that John Ehrlichman, who was Nixon's chief domestic adviser, was ostensibly intruding on his turf and threatened to resign if his relations with the president didn't improve, leading Nixon to conclude "I guess Mayo has got to go." In July 1970, Nixon appointed Mayo as head of the Federal Reserve Bank of Chicago, which allowed him to return to his adopted hometown.
During a conference, Mayo made a blunder by expressing discontent that John Ehrlichman, who served as Nixon's top domestic advisor, was overstepping his boundaries and threatened to step down if his relationship with the president didn't improve. As a result, Nixon decided "Mayo has got to go." Later in July 1970, Nixon appointed Mayo to lead the Federal Reserve Bank of Chicago, allowing him to return to his adopted city.