Introduction : extra-legal measures and the problem of legitimacy / Clement Fatovic and Benjamin A. Kleinerman -- Prerogative power in Rome / Nomi Claire Lazar -- Violating divine law : emergency measures in Jewish law / Oren Gross -- Lockean prerogative : productive tensions / Leonard C. Feldman -- The limits of constitutional government : Alexander Hamilton on extraordinary power and executive discretion / George Thomas -- The Jeffersonian executive : more energetic, more responsible, and less stable / Jeremy D. Bailey -- Lincoln and executive power during the Civil War : an examination of one case: constitutional power or, in effect, an exercise of prerogative power? / Michael Kent Curtis -- Filling the void : democratic deliberation and the legitimization of extra-legal action / Clement Fatovic -- Emergency powers and terrorism-related regulation circa 2012 : perspectives on prerogative power in the United States / Mark Tushnet -- The irrelevance of prerogative power, and the evils of secret legal interpretation / Jack Goldsmith.