Kennedy’s tax reform policies, which sought to place a heavier burden on the superrich, were a primary source of friction. When the president—who was concerned about the flight of capital in the emerging era of the global market—tried to crack down on overseas tax shelters, international bankers like David Rockefeller cried foul. Wall Street financiers saw the Kennedy move as an assault on their ability to transfer wealth to any corner of the globe as they saw fit.

