Cite as: 533 U. S. 678 (2001)
Syllabus
basic method for obtaining review of continued custody after a deportation order becomes final, and none of the statutory provisions limiting judicial review of removal decisions applies here. Pp. 687-688.
2. The post-removal-period detention statute, read in light of the Constitution's demands, implicitly limits an alien's detention to a period reasonably necessary to bring about that alien's removal from the United States, and does not permit indefinite detention. Pp. 688-699.
(a) A statute permitting indefinite detention would raise serious constitutional questions. Freedom from imprisonment lies at the heart of the liberty protected by the Due Process Clause. Government detention violates the Clause unless it is ordered in a criminal proceeding with adequate procedural safeguards or a special justification outweighs the individual's liberty interest. The instant proceedings are civil and assumed to be nonpunitive, and the Government proffers no sufficiently strong justification for indefinite civil detention under this statute. The first justification—preventing flight—is weak or nonexistent where removal seems a remote possibility. Preventive detention based on the second justification—protecting the community—has been upheld only when limited to specially dangerous individuals and subject to strong procedural protections. When preventive detention is potentially indefinite, this dangerousness rationale must also be accompanied by some other special circumstance, such as mental illness, that helps to create the danger. The civil confinement here is potentially permanent, and once the flight risk justification evaporates, the only special circumstance is the alien's removable status, which bears no relation to dangerousness. Moreover, the sole procedural protections here are found in administrative proceedings, where the alien bears the burden of proving he is not dangerous, without (according to the Government) significant later judicial review. The Constitution may well preclude granting an administrative body unreviewable authority to make determinations implicating fundamental rights. Pp. 690-692.
(b) Shaughnessy v. United States ex rel. Mezei, 345 U. S. 206—in which an alien was indefinitely detained as he attempted to reenter the country—does not support the Government's argument that alien status itself can justify indefinite detention. Once an alien enters the country, the legal circumstance changes, for the Due Process Clause applies to all persons within the United States, including aliens, whether their presence is lawful, unlawful, temporary, or permanent. Nor do cases holding that, because Congress has plenary power to create immigration law, the Judicial Branch must defer to Executive and Legislative Branch decisionmaking in that area help the Government, because that power is subject to constitutional limits. Finally, the aliens' liberty interest is not diminished by their lack of a legal right to live at large, for the choice at issue here is between imprisonment and supervision under
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