Affirmed by published opinion. Judge WILKINS wrote the opinion, in which Judge RUSSELL and Judge OSTEEN joined.
OPINION
In 1981, the General Assembly of South Carolina' provided for a supervised furlough program ' for prisoners; however, inmates who had committed specified crimes were excluded from participation in the program. See S.C.Code Ann. § 24-13-710 (Law.Co-op. Supp.1981). 1 Two years later, the General Assembly enacted a statute providing for the mandatory release on supervised furlough of all prison inmates serving sentences of less than life imprisonment six months prior to the expiration of their sentences. See S.C.Code Ann. § 24-13-720 (Law.Coop. 1989). Although this latter provision referenced § 24-13-710, it did not address specifically whether inmates excluded from participation in the supervised furlough program of § 24-13-710 were also excluded from participation in the mandatory furlough program of §. 24-13-720. In 1993,' the General Assembly amended § 24-13-720 to incorporate the eligibility criteria contained in § 24-13-710 and to make the program permissive rather than mandatory. See S.C.Code Ann. § 24-13-720 (Law.Co-op.Supp.1993).
Considering the relationship between the two-statutes, the Supreme Court of South Carolina held that the exclusions contained in § 24-13-7710 did not apply to inmates entitled to mandatory release on furlough under § 24-13-720 as that statute was originally enacted.
See Plyler v. Evatt,
This action subsequently was filed in federal district court by members of the plaintiff class of inmates involved in the state litigation, claiming that application of the 1993 version of § 24-13-720 to prisoners serving sentences of less than life imprisonment for crimes committed between the 1983 enactment of § 24-13-720 and its amendment in 1993 violated the Ex Post Facto Clause of the United States Constitution. 2 See. U.S. Const, art. I, § 10, el. 1. The district court agreed and accordingly enjoined application of the amended statute to the Inmates. The State 3 now appeals that decision, asserting two alternative arguments. First, the State contends that because this litigation essentially amounts to an appeal of the ex post facto ruling of the Supreme Court of South Carolina in Plyler, we lack subject-matter jurisdiction under the Rooker-Feldman doctrine. Second, the State maintains that application of the amended version of §,24-13-720 to the Inmates does not violate the Ex Post Facto Clause because the furlough program in question is not a part of the Inmates’ sentences. For the reasons that follow, we affirm.
I.
The “supervised furlough program” allows “carefully screened and selected inmates who have served the mandatory minimum sentence as required by law ... to be released on furlough” subject to “policies, procedures, guidelines, and cooperative agreementfs]” developed by the Department of Corrections and the Parole and Community Corrections Board. S.C.Code Ann. § 24-13-710 (Law. Co-op.Supp.1983). The General Assembly later enacted the provision at issue in this case, which provided:
Unless sentenced to life i[m]prisonment, an inmate under the jurisdiction or control of the Department of Corrections shall, within six months of the expiration of his sentence, be placed with the program provided for in § 24-13-710 and shall be subject to every rule, regulation, and condition of such program. No inmate otherwise eligible under the provisions of this section for placement with the program under § 24-13-710 may be so placed unless he has maintained a clear disciplinary record for at least six months prior to eligibility for placement with such program.
S.C.Code Ann. § 24-13-720 (Law.Coop.1989). While § 24-13-710 excludes any inmate who is incarcerated for certain crimes or who has “been committed to the State Department of Corrections with a total sentence of five years or less as the first or second adult commitment for a criminal offense for which the inmate received a sentence of one year or more,” S.C.Code Ann. § 24-13-710, these limitations were not expressly incorporated in § 24-13-720.
Although the program is termed a “furlough,” inmates released under it agree to conditions identical in all material respects to the conditions imposed on parolees concerning, inter alia, residence, employment, use of illegal drugs, and possession of weapons. Inmates who violate these conditions are subject to revocation proceedings before the Department of Probation, Parole, and Pardon Services. Moreover, inmates who participate in the furlough program report to, and are supervised by, state parole officers. 4
In 1993, the General Assembly significantly amended § 24-13-720. The amended statute provides:
Unless sentenced to life imprisonment, an inmate under the jurisdiction or control of the Department of Corrections who has not been convicted of a violent crime ... *731 may, within six months of the expiration of his sentence, be placed with the program provided for in Section 24-13-710 and is subject to every rule, regulation, and condition of the program. No inmate otherwise eligible under the provisions of this section for placement with the program may be so placed unless he has qualified under the selection criteria and process authorized by the provisions of Section -2^-18-710. He must also have maintained a clear disciplinary .record for at least six months prior to eligibility for placement with the program.
S.C.Code Ann. § 24-13-720 (Law.Co-op. Supp.1993) (emphasis added).
5
Later that year, the Supreme Court of South Carolina issued a decision regarding the scope of § 24-13-720 as it existed prior to the 1993 amendment, holding that the conditions for participation in the furlough program under § 24-13-710 did not apply to inmates entitled to mandatory release on furlough pursuant to § 24-13-720.
See Plyler v. Evatt,
The Inmates subsequently filed this action in federal district court, seeking declaratory and injunctive relief on the basis that application of § 24-13-720 as amended in 1993 to prisoners serving sentences of less than life imprisonment for crimes committed between the enactment of § 24-13-720 in 1983 and its amendment in 1993 would violate the Ex Post Facto Clause of the United States Constitution. The district court concluded that application of the amended version of § 24-13-720 to such prisoners would retroactively increase punishment for their crimes and therefore was ex post facto.
See generally Collins v. Youngblood,
II.
The State first argues that we lack subject-matter jurisdiction to consider the Inmates’ ex post facto claim because a ruling in favor of the Inmates would nullify the contrary judgment of the Supreme Court of South Carolina in
Plyler,
thereby' violating the
Rooker-Feldman
doctrine.
See District of Columbia Ct. App. v. Feldman,
Here, the State contends that the Inmates effectively are seeking review of the decision of the South Carolina Supreme Court that “[tjhere is no ex post facto violation in applying [§ 24-13-720 as amended in 1993] to individuals who committed offenses before its effective date.”
Plyler,
In order to determine whether the Supreme Court of South Carolina decided the ex post facto issue in
Plyler,
review of the proceedings in state court is necessary. As the Inmates correctly point out, the primary issue before the court in
Plyler
concerned the proper construction of § 24-13-720 as it existed prior to the 1993 amendment. Before rendering a decision, however, the court requested supplemental briefing on the question of whether the 1993 amendment to § 24-13-720 rendered the litigation moot. In responding to that question, the State argued in part that “application of the amended version [of § 24-13-720] to all inmates would not violate the prohibition against ex post facto laws.” Supplemental Brief of Appellants at 10,
Plyler v. Evatt,
Having determined that the issue of whether application to the Inmates' of the 1993 amendment to § 24-13-720 violates the Ex Post Facto Clause was actually decided, it is self-evident that the present litigation essentially amounts to nothing more than an attempt to seek review of that decision by a lower federal court. . The ruling sought by the Inmates — that application to them of the 1993 amendment to § 24-13-720 violates the Ex Post Facto Clause — would nullify the contrary holding of the Supreme Court of-South Carolina in Plyler to the extent that holding relied on an interpretation of the- United States Constitution. Accordingly, the Rook-er-Feldman doctrine bars subject-matter jurisdiction unless this action is one for habe-as corpus relief.
The Inmates maintain that their request for relief sounds in habeas corpus and that as such it has been exempted by Congress from the ambit of the
Roóker-Feldman
doctrine.
See Jordahl,
III.
The constitutional provision on which the Inmates rely forbids the States from enacting “any ... ex post facto Law.” U.S. Const, art. I, § 10, cl. 1. Generally speaking, the •Ex Post Facto Clause prohibits,
inter alia,
the enactment, of “any law-‘which imposes a punishment for an act which was- not punishable at the-time it was committed; or imposes additional punishment to that then prescribed.’ ”
Weaver v. Graham,
A law violates the Ex Post Facto Clause when it is
retrospective
— i.e., when it applies to events predating its enactment— and it disadvantages those to whom it applies.
See Lynce v. Mathis,
— U.S. -, -,
We begin by noting that there is no question presented regarding the first prong of the ex post facto analysis,
i.e.,
whether the 1993 amendment to § 24-13-720 is retrospective as applied to the Inmates. In
Plyler,
the Supreme Court of South Carolina plainly held that § 24-13-720 as originally enacted entitled - all inmates serving sentences of less than life imprisonment to mandatory release on furlough six months prior to the expiration of their sentences.
See Plyler,
We now turn to the second prong of the ex post facto analysis: Whether application of the amended version of § 24-13-720 to prisoners serving sentences of less than life imprisonment for crimes committed between the enactment of § 24-13-720 in 1983 and its amendment in 1993 would amount to an increase in punishment for crimes previously committed. The State maintains that § 24-13-720 is a furlough program designed to alleviate prison overcrowding and that as such it is not a part of the Inmates’ sentences. Therefore, the State claims that the alteration of the program cannot be considered an unconstitutional increase in punishment.
The Supreme Court has recently and emphatically rejected precisely this argument as irrelevant to an ex post facto inquiry.
See Lynce,
— U.S. at - -,
*735
Similarly, here, the determination of whether application to the Inmates of the 1993 amendment to § 24-13-720 is ex post facto does not depend on whether the provision is “ ‘in some technical sense part of the sentence.’ ”
Id.
at -,
The application to the Inmates of the 1993 amendment to § 24-13-720 unquestionably has the effect of increasing the length of their incarceration. Pursuant to the 1983 version of the statute as interpreted by the Supreme Court of South Carolina, the Inmates would be entitled to release from incarceration on furlough six months prior to the expiration of their sentences, assuming the other criteria of the provision are satisfied. Under the statute as amended in 1993, however, prisoners who could not satisfy the additional requirements of § 24-13-710 would not be eligible to participate in the program and would be required to serve the final six months of their sentences in prison. As discussed- above, the program established by § 24-13-720 is indistinguishable from parole. . Thus, for all practical purposes the application to the Inmates of the 1993 amendment to § 24-13-720 deprives them of mandatory parole. As desirable as such a result may be — particularly in view of the violent nature of the crimes for which some of these individuals are incarcerated — such a retroactive change in the law is violative of the Ex Post Facto Clause.
See Lynce,
— U.S. at --,
IV.
In summary, in 1983 the General Assembly of South Carolina passed a statute that reduced by six months the incarcerative sentence of all inmates serving sentences of less *736 than life imprisonment, including those who had committed violent crimes. It is not for a court to question the wisdom of such a law, for clearly it was within the power of the state legislature to enact. Ten years later, the General Assembly elected to amen'd that law and to limit the class of inmates who would be entitled to the six-month reduction. We hold that Supreme Court and circuit precedent obligates us to declare the retroactive application of the 1993 amendment to § 24-13-720 to prisoners serving sentences of less than life imprisonment for crimes committed between the enactment of § 24-13-720 in 1983 and its amendment in 1993 unconstitutional as violative of the Ex Post Facto Clause of the United States Constitution. We also hold that under Preiser, an action asserting entitlement to release from physical confinement properly is considered in habeas corpus. We therefore conclude that although in substance this litigation seeks to overturn a decision of the Supreme Court of South Carolina, the Rooker-Feld-man doctrine does not operate to deprive us of subject-matter jurisdiction. Accordingly, we affirm. 10
AFFIRMED.
Notes
. The furlough program was amended in 1983 to impose additional restrictions on eligibility for participation. See S.C.Code Ann. § 24-13-710 (Law.Co-op.Supp.1983). Additionally, subsequent amendments have occurred that are not material- to this litigation. For ease of reference, we refer to § 24-13-710 as it existed in 1983. See id.
. We'refer to such prisoners collectively as "the Inmates.”
. This action originally named Parker Evatt, former Commissioner of the South Carolina Department of Corrections. Evatt subsequently was succeeded by Michael W. Moore as Director of the South Carolina Department of Corrections. For ease of reference, we refer to Moore as “the State” throughout this opinion.
.Indeed, during oral argument the State repeatedly asserted that the supervised furlough program is indistinguishable from parole.
. The statute was again amended, in a manner not material to this litigation, in 1995. See S.C.Code Ann. § 24-13-720 (Law.Co-op.Supp. 1996).
. The State did not raise this argument before the district court. However, questions concerning subject-matter jurisdiction may be raised at any time by either party or sua sponte by this court.
See North Carolina v. Ivory,
. We note that the Supreme Court of South Carolina did not specify whether its decision rested on an, interpretation of the state or federal Ex Post Facto Clause. See U.S. Const, art. I, § 10, cl. 1; S.C. Const, art. I, § 4. Resolution of this question is immaterial to the outcome of this litigation, however. To the extent the Supreme Court' of South Carolina relied on the South Carolina Constitution, the Rooker-Feldman doctrine is not implicated and subject-matter jurisdiction is present because this litigation presents a different question. To the extent the decision in Plyler involved application of the United States Constitution, subject-matter jurisdiction exists notwithstanding the Rooker-Feldman doctrine because, as discussed. below, this action sounds in habeas corpus.
. In light of this sequence of events, we are at a loss to explain the repeated assertions by counsel for the State that the Inmates initially raised the ex post facto issue and urged the Supreme Court of South Carolina to decide it. Counsel's statements are particularly baffling in view of the fact that he was an attorney of record in the proceedings before the state court. Of course, it is *733 immaterial to our determination of the jurisdictional question which party prompted the Supreme Court of South Carolina to consider whether application to the Inmates of the amended version of § 24-13-720 violates the Ex Post Facto Clause.
. The State has not argued that the Inmates’ ex post facto claim is barred by the new rule doctrine of
Teague v. Lane,
. We express no opinion concerning whether the State appropriately may seek reconsideration of the determination of the Supreme Court of South Carolina that the 1993 amendment to § 24-13-720 constituted a substantive change in the law rather than a clarification.
See Plyler,
