This chapter focuses on the ways that US jurisdictional efforts invited innovations in governance essential to global imperial power. It considers a range of extraterritorial foreign-policy efforts that cut across traditional jurisdictional categories in the formative era of 1930–1950, including experimentation with extraterritorial trade zones, networks, and jurisdiction over strategic but static resource regimes in carefully delineated extraterritorial zones in oceanic spaces. The emerging regime of US hegemony, a full-spectrum imperial dominance, proved increasingly amenable to assertions of extraterritorial jurisdiction. The implementation of subzone manufacturing indicated a blurring of the foreign/domestic divide even within the zones, shifting categories of state space in ways found in extraterritorial zones and territorial possessions in far-flung regions of the world. The United States had something of a double movement of jurisdictional expression – one toward new areas of extraterritorial state space in the marginal seas and continental shelf as claimed by Truman in September 1945.