533US2 724 Unit: $U87 [10-21-02 18:35:10] PAGES PGT: OPIN ZADVYDAS v. DAVIS Kennedy, J., dissenting were released. 65 Fed. Reg. 80285 (2000); Reply Brief for Petitioners in No. 00–38, p. 15. As a result, although the alien carries the burden to prove detention is no longer justified, there is no showing this is an unreasonable burden. Like the parolee in Morrissey, who was aware of the conditions of his release, the aliens in the instant cases have notice, constructive or actual, that the INA imposes as a consequence of the commission of certain crimes not only deportation but also the possibility of continued detention in cases where deportation is not immediately feasible. And like the prisoner in Board of Pardons v. Allen, who sought federalcourt review of the discretionary decision denying him parole eligibility, removable aliens held pending deportation have a due process liberty right to have the INS conduct the review procedures in place. See 482 U. S., at 381. Were the INS, in an arbitrary or categorical manner, to deny an alien access to the administrative processes in place to review continued detention, habeas jurisdiction would lie to redress the due process violation caused by the denial of the mandated procedures under 8 CFR § 241.4 (2001). This is not the posture of the instant cases, however. Neither Zadvydas nor Ma argues that the Attorney General has applied the procedures in an improper manner; they challenge only the Attorney General’s authority to detain at all where removal is no longer foreseeable. The Government has conceded that habeas jurisdiction is available under 28 U. S. C. § 2241 to review an alien’s challenge to detention following entry of a final order of deportation, Brief for Respondents in No. 99–7791, at 9–10, n. 7; Tr. of Oral Arg. 59, although it does not detail what the nature of the habeas review would be. As a result, we need not decide today whether, and to what extent, a habeas court could review the Attorney General’s determination that a detained alien continues to be dangerous or a flight risk. Given the undeniable deprivation of liberty caused by the detention, there might be substantial questions concerning the severity nec-