Damous Nettles v. Randy Grounds ( 2015 )


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  •                 FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    DAMOUS D. NETTLES,                       No. 12-16935
    Petitioner-Appellant,
    D.C. No.
    v.                      1:11-cv-01201-
    AWI-JLT
    RANDY GROUNDS, Warden,
    Respondent-Appellee.
    Appeal from the United States District Court
    for the Eastern District of California
    Anthony W. Ishii, Senior District Judge, Presiding
    MATTA JUAN SANTOS,                       No. 13-15050
    Petitioner-Appellant,
    D.C. No.
    v.                      1:12-cv-01651-
    LJO-GSA
    K. HOLLAND and JEFFREY BEARD,
    Respondents-Appellees.          OPINION
    Appeal from the United States District Court
    for the Eastern District of California
    Lawrence J. O’Neill, District Judge, Presiding
    Argued and Submitted
    October 6, 2014—San Francisco, California
    2                     NETTLES V. GROUNDS
    Filed May 28, 2015
    Before: Sandra S. Ikuta, N. Randy Smith,
    and Mary H. Murguia, Circuit Judges.
    Opinion by Judge Ikuta;
    Partial Concurrence and Partial Dissent by Judge Murguia
    SUMMARY*
    Habeas Corpus
    The panel affirmed the district court’s dismissal of
    California state prisoner Damous Nettles’s habeas corpus
    petition seeking expungement of a prison rules violation
    report and restoration of thirty days of post-conviction credit;
    and reversed the district court’s dismissal of California state
    prisoner Matta Juan Santos’s habeas corpus petition claiming
    that the process by which the prison validated his gang
    involvement violated his due process rights and seeking
    release from his resulting confinement in the security housing
    unit.
    Applying Skinner v. Switzer, 
    131 S. Ct. 1289
    (2011), the
    panel held that a claim challenging prison disciplinary
    proceedings is cognizable in habeas only if it will
    “necessarily spell speedier release” from custody, meaning
    that the relief sought will either terminate custody, accelerate
    the future date of release from custody, or reduce the level of
    *
    This summary constitutes no part of the opinion of the court. It has
    been prepared by court staff for the convenience of the reader.
    NETTLES V. GROUNDS                        3
    custody; and that to the extent this court’s prior decisions
    held that a claim is cognizable in habeas if success on the
    claim is likely to, or has the mere potential to, affect the
    length of a petitioner’s confinement, they are overruled as
    irreconcilable with Skinner.
    The panel held that because neither the expungement of
    the rules violation report nor restoration of the lost good-time
    credits would necessarily accelerate the future date of
    Nettles’s release from custody, his claim is not cognizable
    under the habeas statute.
    The panel wrote that it remains bound by the
    determination in Bostic v. Carlson, 
    884 F.2d 1267
    (9th Cir.
    1989), that there is habeas jurisdiction over a claim that
    would result in release from disciplinary segregation to the
    general prison population. The panel therefore held that the
    district court erred in dismissing Santos’s petition that seeks
    a remedy – expungement of the gang validation and release
    from the security housing unit to the general population – that
    can fairly be described as a quantum change in the level of
    custody. The panel remanded for further proceedings on the
    merits of Santos’s claim.
    Judge Murguia concurred in part and dissented in part.
    She disagreed with the majority that a footnote of dicta in
    Skinner defines the scope of habeas jurisdiction and abrogates
    the decisions in Bostic (habeas jurisdiction is proper when a
    prisoner seeks expungement of a disciplinary finding if
    “expungement is likely to accelerate the prisoner’s eligibility
    for parole”), and Docken v. Chase, 
    393 F.3d 1024
    (9th Cir.
    2004) (habeas jurisdiction is proper when a prisoner’s
    challenge to parole procedures “could potentially affect the
    duration of . . . confinement”). She would reverse and
    4                 NETTLES V. GROUNDS
    remand in both cases because Santos and Nettles have each
    asserted a cognizable habeas claim under the law of this
    circuit.
    COUNSEL
    Monica Knox (argued), Assistant Federal Defender; Heather
    Williams, Federal Defender, Sacramento, California, for
    Petitioner-Appellant Damous D. Nettles.
    Peggy Sasso (argued), Assistant Federal Defender; Heather
    Williams, Federal Defender, Fresno, California, for
    Petitioner-Appellant Matta Juan Santos.
    Andrew R. Woodrow (argued), Deputy Attorney General;
    Kamala D. Harris, Attorney General of California; Jennifer
    A. Neill, Senior Assistant Attorney General; Phillip J.
    Lindsay, Supervising Deputy Attorney General, Sacramento,
    California, for Respondent-Appellee Randy Grounds,
    Warden.
    Amy Daniel (argued), Deputy Attorney General; Kamala D.
    Harris, Attorney General of California; Jennifer A. Neill,
    Senior Assistant Attorney General; Jessica N. Blonien,
    Supervising Deputy Attorney General, Sacramento,
    California, for Respondents-Appellees K. Holland and Jeffrey
    Beard.
    NETTLES V. GROUNDS                               5
    OPINION
    IKUTA, Circuit Judge:
    The two appeals consolidated in this opinion require us to
    identify the appropriate standard for determining whether a
    claim is cognizable under the federal habeas statute.1
    Applying Skinner v. Switzer, we conclude that a claim
    challenging prison disciplinary proceedings is cognizable in
    habeas only if it will “necessarily spell speedier release” from
    custody, meaning that the relief sought will either terminate
    custody, accelerate the future date of release from custody, or
    reduce the level of custody. 
    131 S. Ct. 1289
    , 1299 n.13
    (2011) (emphasis added) (internal quotation marks omitted)
    (citing Wilkinson v. Dotson, 
    544 U.S. 74
    , 86 (2005) (Scalia,
    J., concurring)). To the extent our prior decisions held that a
    claim is cognizable in habeas if success on the claim is likely
    to, or has the mere potential to, affect the length of a
    petitioner’s confinement, they are overruled as irreconcilable
    with Skinner. See Blair v. Martel, 
    645 F.3d 1151
    , 1157 (9th
    Cir. 2011).
    I
    Damous Nettles and Matta Juan Santos, both prisoners in
    California state prisons, appeal the district court’s dismissal
    of their habeas petitions.
    A
    In 1990, Nettles was convicted in California of attempted
    first degree murder with use of a firearm, and other offenses.
    1
    These appeals are ordered consolidated for purposes of this disposition.
    6                      NETTLES V. GROUNDS
    The victim was a woman who had filed a complaint against
    Nettles’s brother. In order to prevent her from testifying,
    Nettles took the victim down an alley, ordered her onto her
    hands and knees, and told her “You’re not going to testify
    against my brother. I’m going to kill you.” Nettles then shot
    her twice in the left ear and left her in the alley. The victim
    did not die, but was seriously injured and disfigured.
    Nettles was sentenced to prison for a determinate term of
    twelve years and a life term with the possibility of parole for
    his convictions for attempted murder and dissuading and
    conspiring to dissuade a witness from attending or giving
    testimony at trial. His minimum eligible parole date was
    October 19, 2005. An initial parole consideration hearing
    was held in 2004. Before that hearing, prison staff had issued
    some thirty-nine rules violations reports (CDC Form 115) to
    Nettles. These reports are issued for misconduct that “is
    believed to be a violation of law or is not minor in nature.”
    Cal. Code Regs. tit. 15, § 3312(a)(3). He also received
    numerous citations for lesser types of misconduct. See 
    id. § 3312(a)(2)
    (noting that “documentation of minor
    misconduct” should be “documented on a CDC Form
    128-A”). At his initial parole hearing in 2004, the Board of
    Prison Terms (now the Board of Parole Hearings, or Board)2
    deemed Nettles to be unsuitable for parole and declined to set
    a parole date. It scheduled the next parole suitability hearing
    for 2006, but the date was postponed several times.
    After 2004, Nettles received seven additional rules
    violations reports. On February 26, 2008, staff issued Nettles
    2
    At the time of the hearing, the Board was referred to as the Board of
    Prison Terms. This entity was replaced by the Board of Parole Hearings
    in 2005. See Cal. Gov’t Code § 12838.4.
    NETTLES V. GROUNDS                       7
    a rules violation report for threatening to stab a corrections
    officer. After an investigation of the incident and a hearing,
    Nettles was found guilty, and given a four-month term in the
    segregated housing unit. He also lost thirty days of post-
    conviction credit.
    On July 30, 2009, the Board convened a second parole
    suitability hearing for Nettles. At the hearing, the presiding
    commissioner first described the facts of Nettles’s crime,
    characterizing it as “one of the most atrocious and cruel acts
    I’ve read” and stating that Nettles’s motive was “ridiculously
    heinous.”
    The commissioner then reviewed Nettles’s prior criminal
    history. Nettles had a long string of convictions beginning at
    age seventeen, and had been in and out of prison for offenses
    including possession of drugs, assault with a deadly weapon,
    battery on a peace officer, and robbery. Nettles was on parole
    for the robbery conviction when he committed the attempted
    murder for which he was sentenced to life imprisonment.
    The commissioner stated that Nettles’s lengthy criminal
    history illustrated his inability to learn from prior
    imprisonments.
    The commissioner next explained the hearing panel’s
    concerns about Nettles’s mental state and attitude about the
    crime. In the hearing panel’s view, Nettles’s letter to the
    victim did not express true remorse. Further, Nettles had not
    taken responsibility for his conduct and lacked insight that
    would enable him to change his behavior. The commissioner
    discussed a May 2007 psychological report, which gave
    Nettles “a rating of overall moderate likelihood to become
    involved in a violent offense if released.” Finally, the
    commissioner stated that Nettles was argumentative and
    8                   NETTLES V. GROUNDS
    stubborn, “challenge[d] authority at every given opportunity”
    and refused to restrain himself, as evidenced by his numerous
    rules violations. The commissioner noted the forty-six rules
    violation reports that had been issued to Nettles while he was
    in prison. Nettles “continued to display negative behavior
    while incarcerated,” and as a result was placed in segregated
    housing. Moreover, Nettles had not taken any significant
    steps to gain skills to function outside of prison.
    Nevertheless, the commissioner noted some positive steps
    Nettles had taken, including a slight reduction in the number
    of rules violations reports issued to Nettles in recent years.
    The hearing panel concluded that Nettles was unsuitable
    for parole because he “still pose[d] an unreasonable risk of
    danger if released from prison.” This finding was “based on
    weighing the considerations provided in the California Code
    of Regulations.” As authorized by the regulations, 
    id. § 2306,
    the commissioner made recommendations regarding “what
    steps may be undertaken to enhance the possibility of a grant
    of parole at a future hearing,” 
    id. § 2304,
    telling Nettles that
    “[f]or next time, you certainly need to become and remain
    disciplinary free.”
    On January 23, 2009, Nettles filed a habeas petition in the
    Superior Court of California claiming, in relevant part, that
    the 2008 rules violation report was illegal, and that the
    disciplinary proceedings held in connection with the 2008
    rules violation report violated his due process rights. The
    Superior Court denied the petition, concluding that Nettles
    failed to exhaust his administrative remedies concerning these
    NETTLES V. GROUNDS                                 9
    claims.3 The California Court of Appeal and California
    Supreme Court then summarily denied the petition.
    On June 10, 2011, Nettles filed a habeas petition in
    federal court seeking, among other things, “restoration of
    good time,” presumably referring to the loss of thirty days of
    post-conviction credits as a result of the 2008 disciplinary
    decision, and expungement of the February 26, 2008 rules
    violation report. After being ordered to respond, the state
    moved to dismiss the petition, arguing that the court lacked
    jurisdiction to entertain the petition because the 2008
    disciplinary decision did not impact the fact or duration of
    Nettles’s confinement. Nettles opposed the motion, arguing
    that the disciplinary decision impacted the duration of his
    confinement because it delayed his parole hearing and
    constituted grounds for future denial of parole.
    The district court dismissed Nettles’s petition, holding
    that he could not show that expungement of the 2008 rules
    violation report was likely to accelerate his eligibility for
    parole. Nettles timely appealed the district court’s decision.
    B
    Santos was convicted in 1996 under California Penal
    Code section 209(a) for participating in a kidnap-for-ransom
    scheme. He was sentenced to a term of life in prison with the
    possibility of parole plus nine years.
    3
    As the state acknowledges, it did not argue to the district court that
    Nettles’s claim was procedurally barred. Nor does the state raise this issue
    on appeal. Therefore, we do not address it.
    10                 NETTLES V. GROUNDS
    After prison investigators verified allegations that Santos
    was a currently active member of the Mexican Mafia, a
    prison official validated the gang-involvement determination
    on February 10, 2011. See Cal. Code Regs. tit. 15, § 3378.
    As a result of this gang validation, Santos was removed from
    the general prison population and confined in the security
    housing unit (SHU) indefinitely.
    Santos claims that the SHU is a “prison within a prison
    where prisoner[s] are denied virtually all privileges.”
    According to Santos, prisoners placed in the SHU spend
    approximately twenty-two hours per day in their cells, receive
    all meals in their cells, are denied contact visits and phone
    access, and are not allowed to participate in training or
    education activities. Additionally, a prisoner is ineligible to
    earn post-conviction credits under California Penal Code
    section 2933(b) or program credit reductions under California
    Penal Code section 2933.05 during the time the prisoner is
    placed in the SHU. Cal. Penal Code § 2933.6.
    Santos administratively appealed his gang validation.
    After his third and final administrative appeal was denied,
    Santos filed a petition for a writ of habeas corpus in the
    Superior Court of California arguing, among other things, that
    the allegations of his gang involvement were false, and that
    there was no evidence supporting the gang validation. Santos
    demanded that the prison expunge the gang validation from
    his file and release him to the general prison population. The
    Superior Court denied Santos’s petition, finding that
    sufficient evidence supported the gang validation. The
    California Court of Appeal and California Supreme Court
    summarily denied the petition.
    NETTLES V. GROUNDS                       11
    On October 9, 2012, Santos filed a petition for a writ of
    habeas corpus in federal court, arguing that the gang
    validation violated his due process rights because it was
    “based on false, unreliable and insufficient information.” He
    sought release from the SHU. The district court dismissed
    the petition on the ground that Santos’s claims were not
    cognizable under the federal habeas statute, as they concerned
    the conditions, rather than the fact or duration, of his
    confinement. Santos timely appealed the district court’s
    decision.
    II
    We review de novo a district court’s decision to deny a
    petition for habeas corpus. Bailey v. Hill, 
    599 F.3d 976
    , 978
    (9th Cir. 2010). We also review de novo a district court’s
    determination that it does not have jurisdiction over a habeas
    corpus petition. 
    Id. Both Nettles’s
    and Santos’s appeals require us to
    determine when we lack jurisdiction over a claim raised in a
    habeas petition. By statute, federal courts must “entertain an
    application for a writ of habeas corpus in behalf of a person
    in custody pursuant to the judgment of a State court only on
    the ground that he is in custody in violation of the
    Constitution or laws or treaties of the United States.” 28
    U.S.C. § 2254(a); see also 28 U.S.C. § 2241(c)(3).
    According to the Supreme Court, this language, as well as
    “the common-law history of the writ” makes clear “that the
    essence of habeas corpus is an attack by a person in custody
    upon the legality of that custody, and that the traditional
    function of the writ is to secure release from illegal custody.”
    Preiser v. Rodriguez, 
    411 U.S. 475
    , 484 (1973).
    12                     NETTLES V. GROUNDS
    In the leading case of Preiser, the Court considered
    whether prisoners who had lost good-time credits as a result
    of disciplinary proceedings could bring an action under
    42 U.S.C. § 19834 for restoration of the credits on the ground
    that the proceedings violated their due process rights, or
    whether they were limited to bringing a habeas petition. 
    Id. at 476–77.
    The prisoners would have been entitled to
    immediate release from prison if their good-time credits had
    been restored. 
    Id. Because analyzing
    this issue required an inquiry into the
    respective spheres of habeas and civil rights actions, the
    Court first gave federal courts guidance as to what types of
    cases sounded in habeas. According to the Court, “when a
    state prisoner is challenging the very fact or duration of his
    physical imprisonment, and the relief he seeks is a
    determination that he is entitled to immediate release or a
    speedier release from that imprisonment, his sole federal
    remedy is a writ of habeas corpus.” 
    Id. at 500.
    The Court
    noted that the scope of habeas had evolved over the years. 
    Id. at 485.
    A person is deemed to be “in custody” for purposes
    of habeas when a person is subject to parole, 
    id. at 486
    n.7
    (citing Jones v. Cunningham, 
    371 U.S. 236
    (1963)), or even
    when the person is released on bail or on the person’s own
    recognizance, 
    id. (citing Hensley
    v. Municipal Court,
    
    411 U.S. 345
    (1973)). In addition, a prisoner is deemed to be
    seeking “release” from custody even when the prisoner will
    not gain freedom, but will be released into a different form of
    4
    Section 1983 provides that: “Every person who, under color of [state
    law] . . . subjects, or causes to be subjected, any citizen of the United
    States or other person within the jurisdiction thereof to the deprivation of
    any rights, privileges, or immunities secured by the Constitution and laws,
    shall be liable to the party injured . . . .” 42 U.S.C. § 1983.
    NETTLES V. GROUNDS                              13
    custody. See 
    id. at 486
    (stating that the writ of habeas corpus
    is available to obtain release from the wrong institution to the
    correct institution) (citing Humphrey v. Cady, 
    405 U.S. 504
    (1972) and In re Bonner, 
    151 U.S. 242
    (1894)). Finally, “the
    federal habeas corpus statute does not deny the federal courts
    power to fashion appropriate relief other than immediate
    release.” 
    Id. at 487
    (internal quotation marks omitted). For
    instance, prisoners can challenge an unlawful loss of good-
    time credits even if restoration of such credits “merely
    shortened the length of their confinement, rather than
    required immediate discharge from that confinement.” 
    Id. Turning next
    to the appropriate scope of § 1983, the Court
    ruled that where prisoners challenged the fact or duration of
    their imprisonment, and sought immediate or speedier release
    from that imprisonment, they were precluded from bringing
    that challenge in a civil rights action under § 1983. 
    Id. at 500.
    The Court reasoned that although “the literal terms of § 1983
    might seem to cover” claims that a prisoner’s confinement
    violated the Constitution, 
    id. at 489,
    there was, as the Court
    later put it, “an implicit exception from § 1983’s otherwise
    broad scope for actions that lie ‘within the core of habeas
    corpus,’” Wilkinson v. Dotson, 
    544 U.S. 74
    , 79 (2005)
    (quoting 
    Preiser, 411 U.S. at 487
    ). Because Congress passed
    the more specific habeas statute, requiring exhaustion of state
    remedies, to cover state prisoners’ constitutional challenges
    to their convictions and sentences, any prisoner complaint
    lying at “the core of habeas corpus” had to be brought by
    means of a habeas petition, not under § 1983. 
    Preiser, 411 U.S. at 489
    –90.5
    5
    Heck v. Humphrey further limited the scope of § 1983, holding that
    claims for damages that necessarily imply the invalidity of a conviction or
    sentence are cognizable under § 1983 only if the plaintiff proves that the
    14                     NETTLES V. GROUNDS
    The Court then examined the prisoners’ claims in light of
    these rulings. Because the prisoners in Preiser brought a
    challenge seeking relief that would result in immediate
    release from prison, their claims “fell squarely within [the]
    traditional scope of habeas corpus.” 
    Id. at 487
    . Because the
    claims were “within the core of habeas corpus,” that was the
    prisoners’ exclusive remedy, and they were precluded from
    bringing the action under § 1983. 
    Id. at 487
    –88, 500.
    Although Preiser helps delineate the core of habeas, it did
    not delineate the outer limits of habeas jurisdiction, the
    question before us here. Indeed, Preiser held this issue open,
    stating that “we need not in this case explore the appropriate
    limits of habeas corpus as an alternative remedy to a proper
    action under § 1983.” 
    Id. at 500.
    We addressed this issue in cases following Preiser, and
    made clear that habeas jurisdiction was available only for
    claims that had some nexus to shortening the length of
    confinement. We did not, however, fully delineate the
    contours of this nexus. In Crawford v. Bell, we held that
    habeas did not extend to challenges to the “terms and
    conditions” of a prisoner’s incarceration, where the
    appropriate remedy would not include “release from
    confinement.” 
    599 F.2d 890
    , 891–92 (9th Cir. 1979). In
    Bostic v. Carlson, we held that a prisoner could bring a
    petition in habeas to seek relief from various disciplinary
    conviction or sentence has been reversed, expunged, or declared invalid.
    
    512 U.S. 477
    , 486–87 (1994). In establishing this “favorable termination”
    rule, the Court reasoned that the sort of action described in Heck is most
    closely analogous to the common-law cause of action for malicious
    prosecution, which requires “termination of the prior criminal proceeding
    in favor of the accused.” 
    Id. at 484.
                        NETTLES V. GROUNDS                        15
    decisions that resulted in “forfeiture of statutory good time or
    segregation from the general prison population,” where the
    relief was for “expungement of the incident from his
    disciplinary record” so long as such “expungement is likely
    to accelerate the prisoner’s eligibility for parole.” 
    884 F.2d 1267
    , 1269 (9th Cir. 1989). In Ramirez v. Galaza, we stated
    that a prisoner could not bring a habeas petition to seek
    expungement of a disciplinary charge where “a successful
    challenge to a prison condition will not necessarily shorten
    the prisoner’s sentence.” 
    334 F.3d 850
    , 859 (9th Cir. 2003).
    In Docken v. Chase, we held that prisoners could bring claims
    in a habeas petition “challenging aspects of their parole
    review” so long as success on the claims “could potentially
    affect the duration of their confinement.” 
    393 F.3d 1024
    ,
    1031 (9th Cir. 2004) (emphasis omitted). These cases
    together establish that habeas jurisdiction is available only for
    claims that, if successful, would have some shortening effect
    on the length of a person’s custody. We have not made clear,
    however, whether a claim has to necessarily, likely, or merely
    potentially accelerate release from confinement to be
    cognizable in habeas.
    In Skinner v. Switzer, the Supreme Court again confronted
    the question, “[w]hen may a state prisoner, complaining of
    unconstitutional state action, pursue a civil rights claim under
    § 1983, and when is habeas corpus the prisoner’s sole
    remedy?” 
    Skinner, 131 S. Ct. at 1298
    . In Skinner, the Court
    considered a prisoner’s lawsuit against a Texas district
    attorney for failing to provide DNA testing the prisoner
    requested. 
    Id. at 1295.
    The Court concluded that the prisoner
    could assert that claim in an action under § 1983 rather than
    in a petition for a writ of habeas corpus because a judgment
    that simply orders DNA tests will not necessarily imply the
    16                     NETTLES V. GROUNDS
    unlawfulness of the state’s custody or spell speedier release.
    
    Id. at 1293.6
    In reaching this conclusion, Skinner relied on Wilkinson
    v. Dotson, an earlier Supreme Court decision holding that
    prisoners could challenge the retroactive application of parole
    guidelines under § 1983 because their claims did not lie at the
    “core of habeas corpus.” 
    Dotson, 544 U.S. at 82
    (internal
    quotation marks omitted). Skinner explained that “Dotson
    declared . . . in no uncertain terms, that when a prisoner’s
    claim would not ‘necessarily spell speedier release,’ that
    claim does not lie at ‘the core of habeas corpus,’ and may be
    brought, if at all, under § 1983.” 
    Skinner, 131 S. Ct. at 1299
    n.13 (emphasis added). Citing Justice Scalia’s concurrence
    in Dotson, Skinner indicated that the Court had never
    “recognized habeas as the sole remedy, or even an available
    one, where the relief sought would ‘neither terminat[e]
    custody, accelerat[e] the future date of release from custody,
    nor reduc[e] the level of custody.’” 
    Id. at 1299
    (emphasis
    added) (quoting 
    Dotson, 544 U.S. at 86
    (Scalia, J.,
    concurring)). Accordingly, Skinner adopted the line between
    6
    The Court previously indicated that a claim that does not imply the
    invalidity of the underlying conviction or “necessarily” affect the duration
    of time to be served, is not a claim on which habeas relief can be granted.
    Muhammad v. Close, 
    540 U.S. 749
    , 754–55 (2004) (per curiam). In
    Close, the Supreme Court limited the applicability of Heck by holding that
    its favorable termination requirement was not applicable, and the prisoner
    could bring a § 1983 claim, when the prisoner challenged administrative
    determinations that did not “raise any implication about the validity of the
    underlying conviction” or “necessarily” affect “the duration of time to be
    served,” because such a challenge “raised no claim on which habeas relief
    could have been granted on any recognized theory.” 
    Id. NETTLES V.
    GROUNDS                                17
    § 1983 claims and habeas actions that it discerned in Dotson.
    Id.7
    Applying Skinner’s ruling on the outer limits of habeas
    jurisdiction, we stated that federal courts lack habeas
    jurisdiction to consider claims for constitutional violations
    that do not necessarily spell speedier release. See 
    Blair, 645 F.3d at 1157
    . In Blair, we considered whether a state
    prisoner could bring a habeas petition claiming that the
    California Supreme Court’s delay in processing his direct
    appeal deprived him of due process. 
    Id. We dismissed
    this
    claim, in part because we lacked habeas jurisdiction. 
    Id. at 1157–58.
    We explained that Dotson and Skinner “distinguish
    between claims that necessarily imply the invalidity of a
    conviction,” which must be brought in a habeas petition, and
    “claims for constitutional violations that do not necessarily
    spell speedier release and thus do not lie at the core of habeas
    corpus, which may be brought, if at all, under § 1983.” 
    Id. at 1157.
    Because the prisoner’s claim did not challenge the
    validity of his conviction or “necessarily spell speedier
    7
    The dissent argues that we are not bound by Skinner’s distinction
    between claims that may be brought in a habeas action and those that may
    be brought in a § 1983 claim because Skinner’s interpretation of Dotson
    is wrong. But, of course, we are bound by the Supreme Court’s
    statements and its characterization of its own precedent, regardless
    whether we believe our interpretation of its precedents is superior. Cf.
    Hart v. Massanari, 
    266 F.3d 1155
    , 1171 (9th Cir. 2001) (“A decision of
    the Supreme Court will control that corner of the law unless and until the
    Supreme Court itself overrules or modifies it. Judges of the inferior courts
    may voice their criticisms, but follow it they must.”); Rodriguez de Quijas
    v. Shearson/Am. Express, Inc., 
    490 U.S. 477
    , 484 (1989) (“If a precedent
    of this Court has direct application in a case, yet appears to rest on reasons
    rejected in some other line of decisions, the Court of Appeals should
    follow the case which directly controls, leaving to this Court the
    prerogative of overruling its own decisions.”).
    18                     NETTLES V. GROUNDS
    release,” we concluded that it “belongs in a § 1983 complaint,
    not a habeas petition.” 
    Id. at 1157–58;
    see also Griffin v.
    Gomez, 
    741 F.3d 10
    , 17 & n.15 (9th Cir. 2014) (“Though we
    had held that [an order requiring a change in conditions of
    confinement] could issue on a habeas petition, the Supreme
    Court [in 
    Skinner, 131 S. Ct. at 1299
    n.13] has since held
    otherwise.”). But see Thornton v. Brown, 
    757 F.3d 834
    , 841
    & n.4 (9th Cir. 2013) (stating in passing that § 1983 and
    habeas may provide alternative means to challenge prison
    conditions, and noting parenthetically that Skinner raised, but
    did not decide “the question whether ‘habeas [is] the sole
    remedy, or even an available one,’ for certain types of claims
    (quoting 
    Skinner, 131 S. Ct. at 1299
    ) (alteration in original)).
    We now reaffirm our statements in Blair and Griffin, and
    hold that we are bound by the Court’s express statement in
    Skinner that relief is available to a prisoner under the federal
    habeas statute only if success on the claim would “necessarily
    spell speedier release” from custody, which Skinner
    suggested would include termination of custody, acceleration
    of the future date of release from custody, or reduction of the
    level of custody. See 
    Skinner, 131 S. Ct. at 1299
    & n.13.8
    This conclusion is not only consistent with the plain language
    of Skinner and our own previous interpretations of that case,
    it is also consistent with the Court’s precedents and the
    common law history of the writ. See 
    Preiser, 411 U.S. at 484
    –86; 
    Dotson, 544 U.S. at 85
    –87 (Scalia, J., concurring);
    Muhammad v. Close, 
    540 U.S. 749
    , 754–55 (2004) (per
    curiam) (holding that a prisoner “raised no claim on which
    habeas relief could have been granted on any recognized
    8
    The dissent complains that our reading of Skinner is “strained,” but our
    interpretation is consistent with the interpretation adopted by two prior
    panels. See 
    Blair, 645 F.3d at 1157
    –58; 
    Griffin, 741 F.3d at 17
    & n.15.
    NETTLES V. GROUNDS                               19
    theory” where the administrative determinations he
    challenged neither raised an implication about the validity of
    the underlying conviction nor necessarily affected the
    duration of time to be served). Accordingly, we conclude that
    under Skinner, in cases involving challenges to prison
    disciplinary proceedings, the writ of habeas corpus extends
    only to claims that, if successful, will “necessarily spell
    speedier release.” See 
    Skinner, 131 S. Ct. at 1299
    n.13
    (emphasis added). To the extent our cases have indicated that
    the writ of habeas corpus may extend to claims that, if
    successful, would merely be likely to or have the potential to
    lead to a speedier release, they are superceded by the
    Supreme Court’s rulings. See Miller v. Gammie, 
    335 F.3d 889
    , 893 (9th Cir. 2003) (“[W]here the reasoning or theory of
    our prior circuit authority is clearly irreconcilable with the
    reasoning or theory of intervening higher authority, a three-
    judge panel should consider itself bound by the later and
    controlling authority, and should reject the prior circuit
    opinion as having been effectively overruled.”). Prisoners
    seeking to bring other challenges to prison conditions may
    have recourse to § 1983, which allows them to bring claims
    without exhausting state remedies or facing the highly
    deferential standard of review applicable to habeas claims.9
    9
    The clarity provided by Skinner’s distinction between habeas and
    § 1983 actions not only provides guidance to prisoners regarding the
    correct form of action for their claims, but also resolves much of the
    understandable confusion of prison officials regarding which prisoner
    claims are cognizable in habeas. In these appeals, for instance, the state
    argued in favor of interpreting Skinner as precluding habeas petitions for
    claims that do not lie at the core of habeas, even though such a rule
    channels prisoner claims towards the more flexible § 1983 cause of action.
    In Skinner itself, by contrast, the state took the opposite position, urging
    that an action raising a due process claim relating to DNA testing was at
    20                   NETTLES V. GROUNDS
    III
    We now apply these principles to the habeas petitions
    filed by Nettles and Santos.
    A
    Nettles seeks two forms of relief. First, he seeks
    expungement of the February 26, 2008 rules violation report
    for threatening to stab a corrections officer. Second, he seeks
    restoration of the thirty days of post-conviction credit that
    were lost based on a finding that he was guilty of the alleged
    rules violation. We must determine whether either of these
    forms of relief will “necessarily spell speedier release” from
    custody. See 
    Skinner, 131 S. Ct. at 1299
    n.13.
    1
    In order to understand Nettles’s arguments that both
    claims are cognizable in habeas, it is first necessary to review
    certain aspects of California’s parole system. If a prisoner,
    like Nettles, has been given a life sentence with the
    possibility of parole, the earliest date on which such a
    prisoner may be released on parole is termed the “minimum
    eligible parole date.” Cal. Code Regs. tit.15, § 2000(b)(67).
    This date is set by statute, and the California Department of
    Corrections is responsible for calculating it. 
    Id. § 2400.
    One year before a prisoner reaches the minimum eligible
    parole date, the Board (or a panel of two or more
    commissioners) meets with the inmate, and sets a parole
    “the core of the criminal proceeding itself” and had to be brought in
    
    habeas. 131 S. Ct. at 1299
    n.13 (quoting oral argument transcript).
    NETTLES V. GROUNDS                       21
    release date “unless it determines that the gravity” of the
    prisoner’s offenses “is such that consideration of the public
    safety requires a more lengthy period of incarceration.” Cal.
    Penal Code § 3041(b); see also Cal. Code Regs. tit. 15,
    § 2281(b) (listing information considered in determining
    whether a prisoner is suitable for release on parole). If the
    Board decides not to set a parole release date, the Board will
    schedule the next hearing for a period ranging from three to
    fifteen years, depending on statutory criteria. Cal. Penal
    Code § 3041.5(b)(3).
    If the Board determines that the prisoner is suitable for
    parole, it will calculate a parole date in the manner required
    by the regulations. Cal. Code Regs. tit. 15, §§ 2289, 2317.
    First, the Board calculates a base term, using a matrix set out
    in the regulations. 
    Id. §§ 2282,
    2403. Among other factors,
    the Board may consider post-conviction credit accrued by the
    prisoner for time served, but “[i]n no case may post
    conviction credit advance a release date earlier than the
    minimum eligible parole date.” 
    Id. § 2290(a).
    After the base
    term has been determined, the prisoner’s post-conviction
    credits are subtracted to determine the adjusted term. 
    Id. § 2411(a).
    If this calculation establishes that the prisoner has
    served time equal to or greater than the adjusted term, the
    prisoner is entitled to release. 
    Id. § 2289.
    2
    Nettles argues that expunging the 2008 rules violation
    report from his record is reasonably likely to accelerate his
    release. He argues that under California law, the Board “shall
    normally set a parole release date” unless the Board
    determines that “the inmate constitutes a current threat to
    public safety.” See In re Lawrence, 
    190 P.3d 535
    , 546, 553
    22                  NETTLES V. GROUNDS
    (Cal. 2008) (internal quotation marks omitted). Nettles
    argues that without the 2008 rules violation on his record, he
    would be able to present the Board fifteen years free of any
    actions relating to drugs or violence, and this would have
    some effect in accelerating his release. While acknowledging
    that the 2009 hearing panel might not have found him eligible
    for parole, even without the 2008 rules violation report,
    Nettles claims that at a minimum, the Board would have
    scheduled the next parole suitability hearing at an earlier date,
    or that Nettles would be able to accelerate the next hearing
    due to a “change in circumstances.” Cal. Penal Code
    § 3041.5(d). Further, Nettles claims that the existence of the
    2008 rules violation report on his record will detract from the
    Board’s consideration of his parole suitability for years to
    come. Because the expungement relief Nettles requests will
    prevent these roadblocks to parole, Nettles contends his
    claims are cognizable in habeas.
    We reject these arguments, because the effect of an
    expungement of the 2008 rules violation report is too
    attenuated to meet the Skinner standard. While the 2008 rules
    violation report will likely have some effect on the Board’s
    consideration, there is no basis for concluding that the
    expungement of this report from the record will “necessarily
    spell speedier release” for Nettles. See 
    Skinner, 131 S. Ct. at 1299
    n.13. Nor will it necessarily terminate Nettles’s
    custody, accelerate the future date of his release, or reduce his
    level of custody. See 
    id. The effect
    of a rules violation on
    parole suitability is a matter of state law or regulation, and,
    under California law, a rules violation is merely one factor
    the parole board considers to determine whether a prisoner
    “constitutes a current threat to public safety,” 
    Lawrence, 190 P.3d at 553
    ; it is not determinative, see Cal. Code Regs.
    tit. 15, § 2281(b) (directing the parole board to consider “[a]ll
    NETTLES V. GROUNDS                       23
    relevant, reliable information” in determining suitability for
    parole). Here, the Board considered a range of relevant
    factors bearing on Nettles’s future dangerousness, including
    his inability to learn from prior imprisonments, his lack of
    insight and remorse regarding his crimes, and his
    argumentative and stubborn attitude. Even if successful,
    Nettles “will not necessarily shorten the length of his
    confinement” because “[t]he parole board will still have the
    authority to deny . . . parole on the basis of any of the
    grounds presently available to it in evaluating such a request.”
    See 
    Ramirez, 334 F.3d at 859
    (first alteration in original)
    (internal quotation marks omitted). As Close pointed out,
    even when a challenge to prison disciplinary proceedings
    “may affect the duration of time to be served (by bearing on
    the award or revocation of good-time credits),” where “it is
    not necessarily so,” a challenge to such proceedings “raise[s]
    no claim on which habeas relief could have been 
    granted.” 540 U.S. at 754
    –55 (emphasis added). Therefore, this claim
    is not cognizable in habeas.
    Nettles also argues that a restoration of post-conviction
    credits would have an effect on the duration of his
    confinement. While he acknowledges that restoring the post-
    conviction credits would not impact his minimum eligible
    parole date, which had already passed at the time he was
    deprived of the credits, Nettles contends that restoration of
    the credits will reduce the term he must serve before being
    released, once the Board determines he is eligible for parole
    and sets a term for his release.
    Again, we reject this argument. Although the loss of
    post-conviction credit could lead to a longer term under some
    circumstances, the effect in Nettles’s case is far too
    attenuated to meet the standard set forth in Skinner. First, the
    24                  NETTLES V. GROUNDS
    Board has not yet found Nettles to be suitable for parole, and
    it is unknown whether the Board will do so at the next parole
    hearing. If Nettles is eventually found suitable for parole, and
    a term is calculated, a deprivation of post-conviction credits
    could affect his release date only if the base term exceeded
    the time already served. See Cal. Code Regs. tit. 15, § 2289.
    Without knowing how many years Nettles will serve before
    the Board finds him suitable for parole or the length of his
    base term, we cannot conclude that restoration of the lost
    good-time credits would necessarily affect the duration of
    Nettles’s confinement if and when the Board finds him
    suitable for parole.
    Because neither expungement of the 2008 rules violation
    report nor restoration of the lost good-time credits would
    necessarily accelerate the future date of Nettles’s release from
    custody, we hold that his claim is not cognizable under the
    federal habeas statute. See 
    Skinner, 131 S. Ct. at 1299
    &
    n.13.
    B
    We next turn to Santos’s claim seeking expungement of
    the gang validation from his record and release from the SHU
    to the general prison population. If successful, Santos’s claim
    would result in immediate release from the SHU, but would
    not result in immediate release from prison.
    We have previously held that “[h]abeas corpus
    jurisdiction is also available for a prisoner’s claims that he
    has been subjected to greater restrictions of his liberty, such
    as disciplinary segregation, without due process of law.”
    
    Bostic, 884 F.2d at 1269
    . The Seventh Circuit has similarly
    concluded:
    NETTLES V. GROUNDS                       25
    If the prisoner is seeking what can fairly be
    described as a quantum change in the level of
    custody—whether outright freedom, or
    freedom subject to the limited reporting and
    financial constraints of bond or parole or
    probation, or the run of the prison in contrast
    to the approximation to solitary confinement
    that is disciplinary segregation—then habeas
    corpus is his remedy.
    Graham v. Broglin, 
    922 F.2d 379
    , 381 (7th Cir. 1991). In
    reaching this conclusion, Graham distinguished challenges
    seeking release from one type of custody to another from
    cases challenging prison conditions. See 
    id. (stating that
    if a
    prisoner is “seeking a different program or location or
    environment, then he is challenging the conditions rather than
    the fact of his confinement and his remedy is under civil
    rights law, even if, as will usually be the case, the program or
    location or environment that he is challenging is more
    restrictive than the alternative that he seeks.”).
    We are bound by our ruling in Bostic, because the
    Supreme Court’s case law is not “clearly irreconcilable” with
    our earlier determination that we have habeas jurisdiction
    over a claim that would result in release from disciplinary
    segregation to the general prison population. See 
    Gammie, 335 F.3d at 893
    . The Court has long indicated that a
    prisoner’s claim for release from one form of custody to
    another, less restrictive form of custody, can be brought in a
    habeas petition. See 
    Skinner, 131 S. Ct. at 1299
    (suggesting
    that habeas was available where the relief sought would
    reduce the level of custody); 
    Preiser, 411 U.S. at 486
    (stating
    there is habeas jurisdiction for claims seeking release on
    parole, bail, or on one’s own recognizance); see also Garlotte
    26                     NETTLES V. GROUNDS
    v. Fordice, 
    515 U.S. 39
    , 47 (1995) (prisoner’s claim seeking
    speedier release from imprisonment to parole was cognizable
    in habeas). And the Court has not directly addressed the
    question whether a challenge to the degree of constraints in
    prison (such as a release from administrative or disciplinary
    segregation) is a claim seeking release from custody, or
    merely a challenge to conditions of confinement. See 
    Close, 540 U.S. at 751
    n.1 (declining to rule on the question whether
    a prisoner might have a habeas claim to challenge “special
    disciplinary confinement for infraction of prison rules”); see
    also 
    Dotson, 544 U.S. at 86
    (Scalia, J. concurring)
    (suggesting that “permissible habeas relief” could include a
    “quantum change in the level of custody”) (citing 
    Graham, 922 F.2d at 381
    )). Accordingly, we remain bound by the
    determination in Bostic that a prisoner can seek expungement
    of an incident from his disciplinary record when that would
    lead to speedier release from disciplinary segregation.10 See
    
    Bostic, 884 F.2d at 1269
    . As suggested in Graham, however,
    a prisoner who is not seeking a quantum change in the level
    of custody, such as release from disciplinary segregation to
    the general prison population, or release from prison on bond,
    10
    After concluding it had no need to address the validity of an order
    releasing a prisoner from disciplinary segregation, Griffin nevertheless
    noted in passing that Skinner now precluded such an order from issuing
    in a habeas petition. See 
    Griffin, 741 F.3d at 17
    –18 & nn. 14–15. While
    we agree with Griffin’s conclusion that Skinner precludes a prisoner from
    challenging conditions of confinement in habeas, we disagree with
    Griffin’s extension of this rule to preclude habeas challenges to quantum
    changes in levels of custody. Because Griffin uttered this overly
    restrictive gloss on Skinner “casually and without analysis,” and “in
    passing without due consideration of the alternatives” as “a prelude to
    another legal issue that command[ed] the panel’s full attention,” it is not
    binding precedent in our circuit. In re Wal–Mart Wage & Hour Emp’t
    Practices Litig., 
    737 F.3d 1262
    , 1268 n.8 (9th Cir. 2013); see also In re
    Magnacom Wireless, LLC, 
    503 F.3d 984
    , 993–94 (9th Cir. 2007).
    NETTLES V. GROUNDS                               27
    parole, or probation, but is merely “seeking a different
    program or location or environment” even if “the program or
    location or environment that he is challenging is more
    restrictive than the alternative that he seeks,” does not meet
    the requirement in Skinner.11 See 
    Graham, 922 F.2d at 381
    .
    Here, Santos claims that the process by which he was
    validated as a gang member violated his due process rights,
    and, as a result of this unconstitutional validation, he was
    confined in the SHU, which is a disciplinary segregation
    facility imposing a greater quantum of custody. The remedy
    Santos seeks of expungement of the gang validation from his
    record and release from the SHU to the general prison
    population, “can fairly be described as a quantum change in
    the level of custody.” See 
    id. at 381.
    Additionally, success
    on his claim would result in his immediate release from the
    SHU to the general prison population. His claim that he has
    11
    Prior to Skinner, there was a circuit split over “the question of the
    propriety of using a writ of habeas corpus to obtain review of the
    conditions of confinement, as distinct from the fact or length of
    confinement.” Spencer v. Haynes, 
    774 F.3d 467
    , 470–71 & n.6 (8th Cir.
    2014) (quoting Bell v. Wolfish, 
    441 U.S. 520
    , 526 n.6 (1979)). As
    explained in Spencer, the D.C., Second, Third, Fourth, and Sixth Circuits
    “firmly [stood] in the camp of allowing conditions-of-confinement claims
    to be brought in the habeas corpus context,” whereas the Eighth, Fifth,
    Seventh, Ninth, and Tenth Circuits held that habeas petitions are not
    “appropriate procedural vehicles by which to remedy conditions-of-
    confinement claims.” 
    Id. Skinner goes
    a long way towards resolving this
    circuit split by holding that relief is available to a prisoner under the
    federal habeas statute only if success on the claim would “necessarily spell
    speedier release from custody,” including termination of custody,
    acceleration of the future date of release from custody, or reduction of the
    level of custody. See 
    Griffin, 741 F.3d at 17
    & n.15. But cf. Aamer v.
    Obama, 
    742 F.3d 1023
    , 1026 (D.C. Cir. 2014) (concluding, after Skinner
    was decided but without discussing it, that challenges to the conditions of
    confinement “properly sound in habeas corpus”).
    28                     NETTLES V. GROUNDS
    been subjected to greater restrictions of his liberty without
    due process of law is therefore properly brought as a petition
    for a writ of habeas corpus.12 See 
    Skinner, 131 S. Ct. at 1299
    & n.13; 
    Bostic, 884 F.2d at 1269
    . Because the district court
    erred in dismissing Santos’s petition, we remand to the
    district court for further proceedings on the merits of Santos’s
    claim.
    AFFIRMED IN APPEAL NO. 12-16935, REVERSED
    AND REMANDED IN APPEAL NO. 13-15050.
    MURGUIA, Circuit Judge, concurring in part, and dissenting
    in part:
    I disagree with the majority that the Supreme Court
    expressly “rul[ed] on the outer limits of habeas jurisdiction”
    in Skinner v. Switzer, 
    131 S. Ct. 1289
    (2011). See Majority
    17. Skinner addressed whether a prisoner’s civil rights action
    could proceed under 42 U.S.C. § 1983, and did not involve a
    federal habeas petitioner, much less the scope of relief
    available under 28 U.S.C. § 2254. See 
    Skinner, 131 S. Ct. at 1297
    (“We take up here only the questions whether there is
    federal-court subject-matter jurisdiction over Skinner’s
    complaint, and whether the claim he presses is cognizable
    12
    Because we conclude that Santos’s claim that his gang validation
    resulted in an increased level of custody is sufficient to render the claim
    cognizable under the federal habeas statute, we need not address Santos’s
    additional argument that his claim is cognizable because his gang
    validation also effectively deprived him of any meaningful opportunity for
    release on parole and resulted in the loss of the right to earn good-time
    credit.
    NETTLES V. GROUNDS                             29
    under § 1983.” (emphasis added)). To accept the majority’s
    strained reading of Skinner we have to believe that the
    Supreme Court, after leaving the issue open for over forty
    years,1 conclusively determined the outer boundaries of
    habeas jurisdiction in a footnote of a case that did not involve
    a habeas petition. We likewise must ignore the Court’s
    explicit limitation that its decision was not intended to forge
    new law, see 
    Skinner, 131 S. Ct. at 1299
    n.13 (stating that
    Skinner should not be interpreted to “mov[e] the line” drawn
    by the Court’s earlier decisions) (quoting Wilkinson v.
    Dotson, 
    544 U.S. 74
    , 84 (2005)), and accept that the Supreme
    Court implemented this drastic change to habeas jurisdiction
    through an ambiguous statement rather than by clear
    direction.
    Given these hurdles, I cannot agree with the majority that
    Skinner’s holding is clearly irreconcilable with our court’s
    decisions in Bostic v. Carlson, 
    884 F.2d 1267
    , 1269 (9th Cir.
    1989) (habeas jurisdiction is proper when a prisoner seeks
    expungement of a disciplinary finding if “expungement is
    likely to accelerate the prisoner’s eligibility for parole”), and
    Docken v. Chase, 
    393 F.3d 1024
    , 1031 (9th Cir. 2004)
    (habeas jurisdiction is proper when a prisoner’s challenge to
    parole procedures “could potentially affect the duration of . . .
    confinement”) (emphasis in original)). Even if the majority is
    correct that the footnote signals an answer to the issue the
    Supreme Court left open in Preiser, the majority is not free to
    disregard binding case law absent much clearer direction
    from the Supreme Court. See United States v. Green,
    
    722 F.3d 1146
    , 1150 (9th Cir. 2013). Because the majority’s
    1
    See Preiser v. Rodriguez, 
    411 U.S. 475
    , 500 (1973) (declining to
    address the “limits of habeas corpus as an alternative remedy to a proper
    action under [42 U.S.C.] § 1983”).
    30                 NETTLES V. GROUNDS
    holding exceeds the scope of authority granted to a three
    judge panel of our court, I must dissent.
    I
    By concluding that Bostic and Docken are clearly
    irreconcilable with Skinner, the majority fails to apply the
    requisite level of deference to our binding precedent. “As a
    three-judge panel of this circuit, we are bound by prior panel
    decisions . . . and can only reexamine them when their
    ‘reasoning or theory’ of that authority is ‘clearly
    irreconcilable’ with the reasoning or theory of intervening
    higher authority.” Rodriguez v. AT & T Mobility Servs. LLC,
    
    728 F.3d 975
    , 979 (9th Cir. 2013) (quoting Miller v. Gammie,
    
    335 F.3d 889
    , 893 (9th Cir. 2003) (en banc)). There is no
    question that “clearly irreconcilable” is a “high standard.”
    Lair v. Bullock, 
    697 F.3d 1200
    , 1207 (9th Cir. 2012) (internal
    quotation marks and citation omitted). Intervening higher
    authority is not clearly irreconcilable simply because there
    exists “‘some tension’ between the intervening higher
    authority and prior circuit precedent” or because “the
    intervening higher authority . . . ‘cast[s] doubt’ on the prior
    circuit precedent.” 
    Lair, 697 F.3d at 1207
    (internal citations
    omitted). Indeed, even “‘strong[] signals’” from the Supreme
    Court “aren’t enough” for a “three-judge panel to overrule
    existing circuit precedent.” 
    Green, 722 F.3d at 1150
    (quoting
    
    Miller, 335 F.3d at 900
    ).
    In Skinner, a state prisoner filed a § 1983 action alleging
    that the State’s refusal to release certain biological evidence
    for DNA testing violated his due process 
    rights. 131 S. Ct. at 1296
    . The State sought dismissal of Skinner’s complaint on
    the basis that Skinner was using his § 1983 action “as a
    platform for attacking his conviction”—a complaint the State
    NETTLES V. GROUNDS                       31
    argued could “be pursued, if at all, in an application for
    habeas corpus.” 
    Id. at 1299
    . The Supreme Court narrowly
    defined the issue implicated in Skinner, stating that the Court
    was addressing only whether Skinner’s claim could proceed
    under § 1983, not whether the same claim hypothetically
    could be brought in a habeas petition. 
    See 131 S. Ct. at 1297
    .
    Answering the narrow question before it, the Supreme Court
    held that Skinner’s claim was cognizable under § 1983
    because the claim did not implicate core habeas jurisdiction.
    
    Id. at 1298.
    The Court reasoned that “[s]uccess in [Skinner’s]
    suit for DNA testing would not ‘necessarily imply’ the
    invalidity of his conviction” because a conclusion that DNA
    testing would ultimately prove Skinner’s innocence was
    anything but certain. 
    Id. This holding
    reiterated what the
    Court has previously held: “core” habeas claims—claims that
    necessarily spell immediate or speedier release from
    confinement—must be brought in habeas, while non-core
    claims may be brought under § 1983. See 
    Dotson, 544 U.S. at 81
    –82 (surveying governing Supreme Court authority).
    The majority reads Skinner differently, concluding that a
    single sentence of dicta in footnote 13 forecloses habeas
    jurisdiction for all non-core claims, including claims that
    closely relate to core habeas proceedings—i.e., claims that, if
    successful, will not necessarily result in speedier release but
    could affect the duration of confinement. See, e.g., 
    Bostic, 884 F.2d at 1269
    (expungement of a disciplinary finding if
    “expungement is likely to accelerate the prisoner’s eligibility
    for parole”); 
    Docken 393 F.3d at 1031
    (when challenged
    parole procedures “could potentially affect the duration of
    [the prisoner’s] confinement”)).
    The majority’s strained reading of Skinner hinges on the
    following sentence in footnote 13: “[Wilkinson v.] Dotson
    32                        NETTLES V. GROUNDS
    declared . . . in no uncertain terms, that when a prisoner’s
    claim would not ‘necessarily spell speedier release,’ that
    claim does not lie at ‘the core of habeas corpus,’ and may be
    brought, if at all, under § 1983.”2 
    Skinner, 131 S. Ct. at 1297
    n.13 (quoting 
    Dotson, 544 U.S. at 84
    ). Reading this
    statement in isolation, the majority creates what it coins “the
    Skinner standard” and determines that “we are bound by the
    Court’s express statement in Skinner that relief is available to
    a prisoner under the federal habeas statute only if success on
    the claim would ‘necessarily spell speedier release’ from
    custody.” In doing so, the majority abrogates our prior
    decisions in Bostic and Docken, where our court held that a
    2
    Footnote 13, in its entirety, reads as follows:
    Unlike the parole determinations at issue in Wilkinson
    v. Dotson, 
    544 U.S. 74
    , 
    125 S. Ct. 1242
    , 
    161 L. Ed. 2d 253
    (2005), Switzer urges, claims like Skinner’s require
    inquiry into the State’s proof at trial and therefore lie at
    “the core of the criminal proceeding itself.” Tr. of Oral
    41; see 
    id., at 33–34.
    Dotson declared, however, in no
    uncertain terms, that when a prisoner’s claim would not
    “necessarily spell speedier release,” that claim does not
    lie at “the core of habeas corpus,” and may be brought,
    if at all, under § 
    1983. 544 U.S., at 82
    , 
    125 S. Ct. 1242
               (majority opinion) (internal quotation marks omitted);
    see 
    id., at 85–86,
    125 S. Ct. 1242 
    (Scalia, J.,
    concurring). Whatever might be said of Switzer’s
    argument were we to recast our doctrine, Switzer’s
    position cannot be reconciled with the line our
    precedent currently draws. Nor can the dissent’s
    advocacy of a “retur[n] to first principles.” Post, at
    1303–1304. Given the importance of providing clear
    guidance to the lower courts, “we again see no reason
    for moving the line our cases draw.” 
    Dotson, 544 U.S., at 84
    , 
    125 S. Ct. 1242
    .
    
    Skinner, 131 S. Ct. at 1299
    n.13.
    NETTLES V. GROUNDS                                 33
    prisoner’s claims are properly brought under § 2254 so long
    as the claim, if successful, would likely accelerate parole
    eligibility, 
    Bostic, 884 F.2d at 1269
    , or “could potentially
    affect the duration of . . . confinement.” 
    Docken, 393 F.3d at 1031
    . I believe the majority is wrong and has exceeded its
    authority.3
    3
    Notably, the majority justifies its interpretation of Skinner by arguing
    that its opinion is “consistent with the interpretation adopted by two prior
    panels.” Majority at 18 n.8 (citing 
    Blair, 645 F.3d at 1157
    –58; 
    Griffin, 741 F.3d at 17
    & n.15). The majority’s reliance on these cases is curious,
    and most certainly misplaced, particularly because Griffin’s brief mention
    of habeas jurisdiction appears to conflict with the majority’s holding in
    Santos’s appeal. Griffin involved a California state prisoner who, like
    Santos, was a validated gang member who challenged his placement in the
    prison’s segregated security housing 
    unit. 741 F.3d at 11
    . In a 2006
    order, the district court granted Griffin’s habeas petition and ordered that
    he be released from segregated housing. 
    Id. at 14.
    The order was too late;
    Griffin had been charged in a federal RICO case and was in federal, not
    state, custody. 
    Id. Griffin was
    subsequently transferred back to state
    prison and he sought enforcement of the 2006 order. “Procedurally,” the
    case before this Court was “a mess.” 
    Id. at 17.
    Relevant here is the
    Griffin panel’s dicta involving the 2006 order, where the panel stated that
    although the Ninth Circuit had previously held that such orders could issue
    on habeas, “the Supreme Court has since held otherwise.” 
    Id. at 17
    &
    n.15 (citing 
    Skinner, 131 S. Ct. at 1299
    n.13). Here, the majority contends
    its interpretation of Skinner “is consistent” with Griffin’s, but the
    majority’s holding in Santos, where the petitioner seeks relief identical to
    the relief issued in the 2006 order, is in direct conflict with Griffin’s dicta.
    Majority at 25 (“The Court has long indicated that a prisoner’s claim for
    release from one form of custody to another, less restrictive form of
    custody, can be brought in a habeas petition.”); 
    id. at 27–28
    (Santos’s
    “claim that he has been subjected to greater restrictions of his liberty
    without due process of law is therefore properly brought as a petition for
    a writ of habeas corpus.”).
    The majority’s reliance on Blair is no more compelling. In Blair, a
    habeas petitioner argued that his right to due process was violated because
    the California Supreme Court was taking too long to resolve his direct
    34                      NETTLES V. GROUNDS
    To begin with, the “express statement” on which the
    majority relies is by no means a clear statement of intent by
    the Supreme Court. The sentence states that the Supreme
    Court’s decision in Dotson “declared . . . in no uncertain
    terms” that only core habeas claims can be pursued under
    § 2254. This statement, however, is inherently ambiguous
    given that nothing in Dotson’s holding or reasoning supports
    the legal conclusion. As in Skinner, Dotson involved only
    whether prisoners seeking relief under § 1983 could pursue
    those claims in a civil rights action or, the corollary, whether
    the prisoner’s claims implicated “core” habeas jurisdiction
    and were therefore Heck-barred. 
    See 544 U.S. at 82
    –84
    (noting prisoners can pursue relief under § 1983 without
    exhausting habeas remedy when success in the suit will not
    necessarily shorten the prisoner’s sentence). The Court in
    Dotson held that the prisoners’ claims—which alleged that
    the state’s retroactive application of harsher parole guidelines
    violated the Ex Post Facto clause—could proceed under
    
    appeal. 645 F.3d at 1153
    . By the time the claim reached the Ninth
    Circuit, the California Supreme Court had already affirmed the petitioner’s
    direct appeal on the merits, prompting the panel in Blair to dismiss the
    claim as moot. 
    Id. The panel’s
    mootness holding renders its subsequent
    discussion of habeas jurisdiction an advisory opinion. See Church of
    Scientology of Cal. v. United States, 
    506 U.S. 9
    , 12 (1992) (“[A] federal
    court has no authority ‘to give opinions upon moot questions or abstract
    propositions, or to declare principles or rules of law which cannot affect
    the matter in issue in the case before it.’” (quoting Mills v. Green,
    
    159 U.S. 651
    , 653 (1895)); see also U.S. ex rel. Bledsoe v. Cmty. Health
    Sys., Inc., 
    501 F.3d 493
    , 507 (6th Cir. 2007).
    Materially, in their brief discussions of habeas jurisdiction, Blair and
    Griffin did not cite to a single Ninth Circuit habeas case, much less decide
    that Bostic and Docken are clearly irreconcilable with Skinner. The
    majority exceeds its authority by reaching this conclusion today. See
    
    Green, 722 F.3d at 1150
    .
    NETTLES V. GROUNDS                       35
    § 1983. Nothing in the Court’s decision mandated that such
    claims be brought in a civil rights action. 
    Id. Despite the
    majority relying entirely on dicta quoting the legal principle
    announced in Dotson, the majority is notably silent about the
    fact that Dotson itself does not support the majority’s
    holding.
    There are several additional reasons that undercut the
    majority’s conclusion that Skinner redefined habeas
    jurisdiction. The issue in Skinner involved “only . . . whether
    the claim [Skinner] presses is cognizable under § 1983,” and
    the case did not involve a petition for writ of habeas corpus
    under § 2254, much less implicate the outer bounds of habeas
    jurisdiction. 
    See 131 S. Ct. at 1297
    . In fact, despite many
    opportunities to address this issue, the Supreme Court has
    notably refrained from defining the scope of habeas
    jurisdiction for over four decades. See 
    Preiser, 411 U.S. at 500
    . Ironically, the majority’s conclusion that Skinner finally
    answers this open question conflicts with the very footnote on
    which the majority’s holding relies. The footnote expressly
    cautions against reading Skinner to “mov[e] the line” drawn
    by the Court’s earlier 
    decisions. 131 S. Ct. at 1299
    n.13
    (“Given the importance of providing clear guidance to the
    lower courts, ‘we again see no reason for moving the line our
    cases draw.’” (quoting 
    Dotson, 544 U.S. at 84
    )).
    Given the narrow issue before the Court in Skinner, and
    the Court’s explicit limitation in footnote 13 that its decision
    was not intended to forge new law, I cannot agree with the
    36                     NETTLES V. GROUNDS
    majority that the ambiguous footnote in Skinner mandates a
    departure from our case law.4
    II
    We review de novo a district court’s decision to deny a
    petition for habeas corpus. Bailey v. Hill, 
    599 F.3d 976
    , 978
    (9th Cir. 2010). Because Skinner does not abrogate our case
    law defining the scope of habeas jurisdiction, these
    consolidated appeals are governed by the law of this circuit.
    With respect to Matta Juan Santos’s appeal, the majority
    agrees that Skinner “is not ‘clearly irreconcilable’ with our
    earlier determination that we have habeas jurisdiction over a
    claim that would result in release from disciplinary
    segregation to the general prison population.” Majority at 25.
    I therefore concur in Section III.B. of the majority opinion,
    which reverses the district court’s dismissal for lack of
    jurisdiction and remands for the district court to consider the
    merits of Santos’s habeas petition. Because I disagree that
    4
    To support its holding, the majority cites a number of pragmatic
    reasons for adopting its interpretation of Skinner. For example, the
    majority contends that its holding “not only provides guidance to prisoners
    regarding the correct form of action for their claims, but also resolves
    much of the understandable confusion of prison officials regarding which
    prisoner claims are cognizable in habeas.” Majority at 19 n.9. I agree that
    the majority’s holding draws a clear distinction between habeas
    jurisdiction and jurisdiction under § 1983 that will be easier to implement
    than our current jurisprudence. But no matter how practical the majority’s
    rule may be, and regardless of whether the Supreme Court will someday
    agree with the majority, the single sentence of dicta in Skinner does not
    give a three-judge panel authority to overrule the law that binds us now.
    See State Oil Co. v. Khan, 
    522 U.S. 3
    , 20 (1997) (court of appeals “was
    correct” in adhering to binding precedent despite recognizing an
    “infirm[]” Supreme Court decision that the court of appeals rightly
    predicted would be overturned by the Supreme Court).
    NETTLES V. GROUNDS                        37
    the majority’s newly created “Skinner standard” governs
    Nettles’s appeal, I write separately and evaluate Nettles’s
    claim under our court’s established authority. Applying
    controlling circuit authority, I would reverse the district
    court’s order of dismissal because Nettles has sufficiently
    alleged a claim cognizable under § 2254.
    A
    Damous Nettles, who is a California state prisoner serving
    an indeterminate life term for the heinous crimes described at
    length in the majority opinion, majority at 5–8, challenges a
    disciplinary finding in his prison record, which concluded
    that Nettles threatened to stab a correctional officer on
    February 26, 2008. In his federal habeas petition, Nettles
    argues that he was denied the opportunity to defend against
    the allegation because prison officials falsified evidence and
    refused to allow Nettles to present testimony from
    exculpatory witnesses, in violation of his constitutional rights.
    As a result of this disciplinary finding, Nettles was placed in
    segregated housing for four months, and he lost thirty days of
    post-conviction credit.
    The February 26, 2008 violation, and others, was
    considered by the parole board a year later, on July 30, 2009,
    when the board convened for a parole suitability hearing and
    determined that Nettles was not suitable for parole because he
    “still pose[d] an unreasonable risk of danger if released from
    prison.” Under California law, if a prisoner is deemed
    unsuitable for parole, the board has discretion to determine
    when to schedule the next hearing—either 3, 5, 7, 10, or 15
    years after the hearing at which parole is denied. Cal. Penal
    Code § 3041.5(b)(3). Without analysis, the board set Nettles’
    next parole hearing for 2019—ten years later.
    38                  NETTLES V. GROUNDS
    In his federal habeas petition, Nettles asserts that “before
    the 2008 [violation] for threatening an officer, Nettles had
    gone a full decade without any disciplinary action for drugs
    or violence; if he is able to expunge the [violation], he would
    take to the Board today fifteen years free of any actions
    relating to drugs or violence.” He asserts that because the
    parole board must consider serious rule violations as a factor
    tending to show the prisoner is unsuitable for parole, Cal.
    Code Regs. tit. 15, §2402(c)(6), expungement of his vile 2008
    offense would result in a “significant change in evidence
    probative of his current dangerousness.” Nettles also
    contends that expungement will likely advance his next
    parole hearing because he will be able to show a “change in
    circumstances or new information” related to his current
    dangerousness. See Cal. Pen. Code § 3041.5(d)(1).
    Nettles could be right; he could also be wrong. But,
    adhering to our binding precedent, the question before us is
    not what the parole board will ultimately decide should
    Nettles successfully expunge his 2008 rules violation or what
    we would do if we were sitting as parole commissioners.
    Indeed, “[w]e are ill-inclined . . . to substitute our substantive
    analysis of the likely outcome of [Nettles]’ parole hearings
    for that of the Board.” 
    Docken, 393 F.3d at 1031
    . The
    question before us is only whether Nettles’ claim, if
    successful, “could potentially affect the duration of . . .
    confinement.” 
    Id. (emphasis in
    original). Although Nettles’
    2008 disciplinary violation for threatening to stab a prison
    official was not the only, or even the primary, reason the
    board denied Nettles parole, expungement of the offense
    nonetheless could potentially affect the length of his
    confinement. Nettles does not allege that expungement
    would have caused the board to grant him parole in 2009.
    Rather, he contends that expunging the offense will likely
    NETTLES V. GROUNDS                       39
    accelerate his next parole hearing by changing the
    circumstances relevant to his current dangerousness; instead
    of his prison record reflecting a threat to murder a
    correctional officer in 2008, Nettles’ record will demonstrate
    that he has not been involved in a drug or violent offense in
    fifteen years. Under these circumstances, “[i]t is certainly at
    least possible that [Nettles’] suit would impact the duration of
    his confinement,” if the 2008 violation is expunged from his
    record. See 
    Docken, 393 F.3d at 1031
    . Because Nettles has
    established a sufficient link between success in his claim and
    the duration of his confinement, I would reverse the district
    court’s order of dismissal and remand for the court to address
    the merits of Nettles’ claim in the first instance.
    ~
    For the foregoing reasons, I respectfully disagree with the
    majority that the footnote of dicta in Skinner redefines the
    scope of habeas jurisdiction and abrogates our prior decisions
    in Bostic and Docken. Although I agree with the majority’s
    determination that Santos’s claim may be brought under
    § 2254, I disagree that Nettles petition fails to assert a
    cognizable habeas claim. I would therefore reverse and
    remand in both cases because Santos and Nettles have each
    asserted a cognizable habeas claim under the law of our
    circuit. See 
    Docken, 393 F.3d at 1031
    . I believe the
    majority’s conclusion to the contrary exceeds the authority
    granted to a three judge panel of this Court.