Whistleblowing has a long and predictably contentious history in America. What distinguishes essential whistleblowing from detrimental leaking? In assessing answers to that question, do the motivations of the individual revealing government secrets matter or should we focus primarily on the benefits and costs of their actions? Driving these tough questions is the considerable tension between the paramount need for secrecy to protect national security interests and the erosion of democratic governance that secrecy can abet.