Classified documents leaked by private contractor Edward Snowden have raised serious concerns about privacy rights both in the United States and internationally. Beyond the question of personal privacy in the digital age, however, are a set of structural questions as well: How can the judicial process be transparent while still preserving state secrets? How can we draw a line to distinguish between domestic surveillance and foreign spying? How does spying strain the relationship between the President and Congress? As historian David Hadley describes these are questions that have bedeviled American policy-makers, politicians, and citizens for over a century. Read more here.