The Bush Administration has notoriously argued that detainees at Guantanamo do not enjoy constitutional rights because they are held outside American borders‎.‎ But where do rules about territorial legal limits such as this one come from‎?‎ Why does geography make a difference for what legal rules apply‎?‎ Most people intuitively understand that location affects constitutional rights‎,‎ but the legal and political basis for territorial jurisdiction is poorly understood‎.‎ In this novel and accessible treatment of territoriality in American law and foreign policy‎,‎ Kal Raustiala begins by tracing the history of the subject from its origins in post‎-revolutionary America to the Indian wars and overseas imperialism of the 19th century‎.‎ He then takes the reader through the Cold War and the globalization era before closing with a powerful explanation of America‎'‎s attempt to increase its extraterritorial power in the post‎-9/11 world‎.‎ As American power has grown‎,‎ our understanding of extraterritorial legal rights has expanded too‎,‎ and Raustiala illuminates why A‎.‎‎.‎‎.‎