Ayelet Shachar’s The Shifting Border deploys a powerful map metaphor to support rethinking of borders and their functions. I interrogate this metaphor, developing some of the representational, constructive, and normative functions of maps, along with their connections to legal mechanisms for decoupling migration from territory. I survey three responses to the extra-territorialization of migration: a cynical response that rejects the possibility of migration justice, an abolitionist response connected to open borders, and a revisionist response that advocates for widescale institutional reform. The revisionist response illuminates how Shachar’s essay challenges us to reflect on what sorts of maps and accompanying social and political organizations would best support migrant justice.