The purpose of this article is to show how the political discourse of danger and control of migratory flows in the Global North has transformed the Westphalian concept of border linked to territory, expanding its scope of action within countries and extraterritorially to anticipate threats. Thus, we will analyze some of the technological, bureaucratic, and legal-punitive devices deployed in the border areas from the outlook of the theoretical proposals of the critical border studies approach, focusing on the exceptionality of the actions of sovereign power and/or daily securitarian practices. Through these approaches, borders can be understood as a complex and articulated security network at several levels, where exceptional and routine dynamics are implemented involving numerous actors in their various dimensions, normalizing violence on migrants and refugees, who will become homo sacer.