This paper closely studies Scotland v Canada to reveal the normative and substantive justice challenges facing immigration detainees across Canada. The Scotland decision at the Ontario Superior Court certified a habeas corpus writ as an individual remedy to release Mr. Ricardo Scotland from a pointless, seventeen-month incarceration. The decision frames Mr. Scotland’s detention as anomalous or divergent from an otherwise-functioning system. Against this view, this paper argues that access to habeas corpus cannot remedy the detention system’s scale of injustices. The paper contextualizes Mr. Scotland’s incarceration and the Superior Court decision against two primary claims: first, that the Canadian immigration and refugee determination system is arbitrarily biased against certain minoritized individuals, therefore transforming some people into detainable bodies; and second, that the global criminalization of migration trend has nested an arc of penal practices into Canadian policymaking and law, and this arc has seemingly normalized indefinite detention for some migrants. The paper concludes that restoration of access to habeas corpus cannot be understood as a substantive remedy to address the miscarriages of justice in the Canadian detention system.