One Nation Under Surveillance: A New Social Contract to Defend Freedom Without Sacrificing Liberty

What limits, if any, should be placed on a government's efforts to spy on its citizens in the interests of national security? Spying on foreigners has long been regarded as an unseemly but necessary enterprise. Spying on one's own citizens in a democracy, by contrast, has historically been subject to various forms of legal and political restraint. For most of the twentieth century these regimes were kept distinct. That position is no longer tenable. Modern threats do not respect national bo...