Debates on borders in both normative political theory and critical border studies tend to focus on the spatiality of bordering. This article evaluates this territorialist epistemology by identifying the complex temporality of borders and highlighting the specific normative challenges that it engenders. In particular, it argues for the centrality of time–space governance as a frame for examining bordering processes. This challenge is exemplified through contemporary debates on the movement of people and theoretical arguments about how to construct migration policy. The (...) article contends that complex temporality necessitates an orientation to the future that reconfigures the manner in which theorists should address the time–space governance of migration. (shrink)