The importance of the writ of habeas corpus cannot be overstated; predating the magna carta itself, it has been described by Adam Smith as the “great security against suppression," by William Blackstone as the “great and efficacious writ in all manner of illegal confinement," and by many more as the “Great Writ of Liberty." Habeas corpus requires a public authority detaining a person to bring them before a court to justify the legality of their detention; if the detention is found to be unlawful, the court must order their release. Expanding on the law of habeas corpus, the Supreme Court in Dorsey v. Canada (Attorney General), 2025 SCC 38 (“Dorsey”), found that a decision to deny an inmate a lower security classification can trigger the inmate’s habeas corpus rights.