Dean Kilgore v. Secretary, FL DOC ( 2015 )


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  •                 Case: 13-11825    Date Filed: 11/16/2015   Page: 1 of 34
    [PUBLISH]
    IN THE UNITED STATES COURT OF APPEALS
    FOR THE ELEVENTH CIRCUIT
    ________________________
    No. 13-11825
    ________________________
    D.C. Docket No. 8:11-cv-01329-EAK-TBM
    DEAN KILGORE,
    Petitioner - Appellant,
    versus
    SECRETARY, FLORIDA DEPARTMENT OF CORRECTIONS,
    ATTORNEY GENERAL, STATE OF FLORIDA,
    Respondents - Appellees.
    ________________________
    Appeal from the United States District Court
    for the Middle District of Florida
    ________________________
    (November 16, 2015)
    Before ED CARNES, Chief Judge, HULL and MARCUS, Circuit Judges.
    MARCUS, Circuit Judge:
    Petitioner Dean Kilgore was serving a life sentence for first-degree murder,
    a consecutive life sentence for kidnapping, and an additional consecutive five-year
    sentence for armed trespass when he was convicted of capital murder and
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    sentenced to death for killing a fellow inmate, Emerson Robert Jackson. Kilgore
    now appeals from the district court’s denial of habeas relief, arguing that he is
    intellectually disabled, and, therefore, ineligible for the death penalty under the
    Eighth Amendment and Atkins v. Virginia, 
    536 U.S. 304
    (2002). 1 After thorough
    review, we affirm.
    I.
    A.
    These are the essential facts. Petitioner Dean Kilgore has been incarcerated
    most of his adult life. Kilgore v. State, 
    55 So. 3d 487
    , 493 (Fla. 2010). His entry
    into the Florida prison system began in 1970 when he was found guilty of, among
    other charges, three counts of aggravated assault with intent to kill. 
    Id. He was
    released from custody on September 30, 1977. 
    Id. On July
    31, 1978, Kilgore
    broke into a woman’s home late at night while she, her boyfriend, and their
    children were there. Armed with a firearm, Kilgore shot the boyfriend to death in
    the presence of one of the children. Kilgore then kidnapped the woman and took
    her to an orange grove where he kept her for the rest of the night. After standing
    trial for these crimes in Florida’s Circuit Court in Polk County, Kilgore was
    convicted in December 1978 of first-degree murder, kidnapping, and armed
    1
    We use the terms “intellectually disabled” and “intellectual disability” in this opinion because,
    as the Supreme Court stated in Hall v. Florida, both law and medicine have moved away from
    the terms “mentally retarded” and “mental retardation.” 
    134 S. Ct. 1986
    , 1990 (2014).
    2
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    trespass. He was sentenced to a life term of imprisonment on the first-degree
    murder count, a life term of imprisonment on the kidnapping count, and five years’
    imprisonment on the armed trespass count, each sentence to run consecutively to
    the others.
    Kilgore had served approximately eleven years of this sentence at the Polk
    Correctional Institution when he killed Emerson Robert Jackson. Kilgore and
    Jackson were lovers who had fought about Jackson’s relationship with other
    inmates and the way Jackson would play his partners against each other. On
    February 13, 1989, Kilgore waited outside Jackson’s cell and smoked a cigarette
    with another inmate until Jackson came out. At that point, Kilgore and Jackson got
    into a verbal argument, they struggled, and Kilgore pulled out of his pocket a
    homemade shank knife that he had borrowed from another inmate. Kilgore
    stabbed Jackson three times: one small stab above the rib cage; a larger stab in the
    back that hit his shoulder blade; and the fatal wound, a stab to the front that
    penetrated his chest cavity, went through his left lung, and punctured his aorta.
    After the stabbing, Kilgore reached into the shower from the hallway and
    grabbed a can he had stashed there earlier. From this can, Kilgore poured a strong-
    smelling, caustic substance onto Jackson’s face and neck, and tried unsuccessfully
    to light some matches. Jackson died as a result of the stab wounds. Kilgore went
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    to the administration building immediately after the incident and told the guards, “I
    stabbed the bitch and I hope he’s dead.”
    Following Jackson’s death, Kilgore was indicted for first-degree murder and
    possession of contraband by an inmate. 
    Kilgore, 55 So. 3d at 493
    . After a jury
    trial, Kilgore was found guilty on both counts and, by a vote of nine to three, the
    jury recommended that he be sentenced to death. 
    Id. at 494.
    At sentencing, the
    trial court found that two aggravating circumstances were proven beyond a
    reasonable doubt: (1) Kilgore was under sentence of imprisonment at the time he
    committed the murder, Fla. Stat. § 921.141(5)(a); and (2) Kilgore had been
    previously convicted of a felony involving the use or threat of violence to the
    person (first-degree murder, kidnapping, trespass with a firearm, three counts of
    assault with intent to commit murder in the second degree, two counts of
    aggravated assault, and resisting arrest with force), Fla. Stat. § 921.141(5)(b).
    Kilgore v. State, 
    688 So. 2d 895
    , 897 (Fla. 1996) (per curiam). The trial court also
    found two statutory mitigating factors: (1) Kilgore acted under the influence of
    extreme mental or emotional disturbance, Fla. Stat. § 921.141(6)(b); and (2)
    Kilgore’s capacity to conform his conduct to the requirements of law was
    substantially impaired, Fla. Stat. § 921.141(6)(f). 
    Kilgore, 688 So. 2d at 897
    . The
    trial court considered as nonstatutory mitigating factors Kilgore’s extreme poverty
    as a child, his lack of education, and his poor mental and physical condition. 
    Id. 4 Case:
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    After weighing all of the factors, the trial court determined that the death
    sentence was the appropriate sanction since the aggravating circumstances “far
    outweighed” the statutory and non-statutory mitigating circumstances. It reasoned
    that “the accomplishment of this murder necessitated considerable preparation,
    cunning, and stealth” because “[t]he day before the killing [Kilgore] borrowed the
    murder weapon from another inmate and prevailed upon a third inmate to refrain
    from emptying a garbage can which contained the solvent he intended to pour over
    the victim’s body.” After the murder, noted the trial court, Kilgore “calmly walked
    to the administration building where he told the guards, ‘I stabbed the bitch.’” The
    trial court concluded that “[t]o sentence Mr. Kilgore to anything but death would
    be tantamount to giving him a license to kill.”
    The Florida Supreme Court affirmed Kilgore’s conviction and death
    sentence on direct appeal, 
    Kilgore, 688 So. 2d at 901
    , and the United States
    Supreme Court denied certiorari review, Kilgore v. Florida, 
    522 U.S. 832
    (1997).
    B.
    Kilgore then moved collaterally for post-conviction relief under Florida Rule
    of Civil Procedure 3.850 in the Circuit Court of Polk County, Florida. The court
    conducted a five-day evidentiary hearing on June 13-17, 2005. Kilgore later
    amended his post-conviction application claiming that he was intellectually
    disabled and, therefore, he could not be executed. The court appointed Dr. Hyman
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    Eisenstein, a neuropsychiatrist who had previously testified during Kilgore’s 2005
    evidentiary hearing as an expert for the defense, and neuropsychologist Dr.
    Michael Gamache as an expert for the State. A second evidentiary hearing was
    conducted on January 22-23, 2007, on the intellectual disability issue.
    The defense presented the testimony of Dr. Eisenstein and Dr. Henry Dee, a
    neuropsychologist, along with the testimony of Capital Collateral Regional
    Counsel investigator Katrina McNish. As Dr. Eisenstein explained, the elements
    of an intellectual disability claim under Florida law are: (1) significantly
    subaverage general intellectual functioning, (2) existing concurrently with deficits
    in adaptive behavior, and (3) manifested during the period from conception to age
    eighteen.2 As for the first prong of the intellectual disability test, the Wechsler
    Adult Intelligence Scale (“WAIS”) had been administered to Kilgore on six
    separate occasions, yielding full-scale IQ scores of 76 (Dr. William Kremper --
    August 1989); 84 (Dr. P.V. Ciotola -- March 1990); 67 (Dr. Dee -- March 1994);
    75 (Dr. Eisenstein -- August 2000); 74 (Dr. Dee -- October 2004); and 85 (Dr.
    Gamache -- May 2006). Dr. Eisenstein opined that the full-scale IQ scores of 74,
    75, and 76 were likely most representative of Kilgore’s actual IQ. Based on these
    2
    Since 2001, Florida’s statute has defined “mental retardation” as “significantly subaverage
    general intellectual functioning existing concurrently with deficits in adaptive behavior and
    manifested during the period from conception to age 18.” See Fla. Stat. § 921.137(1). The
    statute further defines “significantly subaverage general intellectual functioning” as
    “performance that is two or more standard deviations from the mean score on a standardized
    intelligence test,” 
    id., which the
    Florida Supreme Court interpreted as requiring a petitioner to
    establish he has an IQ of 70 or below. See Jones v. State, 
    966 So. 2d 319
    , 329 (Fla. 2007).
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    scores, Eisenstein also offered that Kilgore met the first prong of Florida’s
    intellectual disability test because Kilgore’s IQ scores of 74 to 76 fell within the
    intellectual disability range.
    As for the second prong of Florida’s test -- impaired “adaptive functioning”
    -- Dr. Eisenstein concluded that Kilgore met the criterion because, according to
    family members and acquaintances, as a child Kilgore interacted with younger
    children and was described as “stupid” and “slow”; his communication skills were
    deficient and he was unable to properly file prison grievances, even if instructions
    were given; he was “slow” academically, according to inmate Charlie Thompson;
    and he “required” others to provide for him. Eisenstein reported that Kilgore had
    worked picking cotton, picking oranges by hand, and dishwashing -- none of which
    required a high level of skill. He also averred that Kilgore’s 2004 Department of
    Corrections (“DOC”) records indicated that Kilgore was not “motivated” to
    practice walking with a prosthetic leg he had received and did not wear it.
    Eisenstein also opined that if Kilgore were not incarcerated, he would be unable to
    care for himself and, indeed, probably would not be alive. The neuropsychiatrist
    offered that it would not be useful to examine Kilgore’s current level of adaptive
    functioning because Kilgore was on death row where his environment was highly
    structured.
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    As for the last prong of the test -- Kilgore’s intellectual functioning before
    age eighteen -- Eisenstein explained that there were no intelligence test results, or
    other testing results available to establish Kilgore’s intellectual functioning or
    deficits in adaptive behavior prior to age eighteen. Investigator McNish confirmed
    that there were no substantive school records for Kilgore during his childhood.
    Since there were no records, Dr. Eisenstein performed a “retrospective study” that
    included speaking to Kilgore’s family and others who knew him, and said that this
    kind of study was an acceptable methodology. He admitted, however, that it “is
    somewhat anecdotal and it’s not what we consider to be scientific.” Eisenstein
    gathered information from Kilgore’s family and a classmate who all opined that
    Kilgore was “stupid,” “mildly retarded,” “off,” and “slow.” Eisenstein also
    reported that: Kilgore ate food from garbage cans; began drinking homemade
    “hootch” at age 3 and was regularly drinking alcohol by age 8; did not have control
    over his urine and feces; could not dress without assistance; was a loner; and was
    not able to care for himself. Dr. Eisenstein added that Department of Corrections
    records, dated after Kilgore had turned eighteen, indicated that he could not read or
    write. Dr. Eisenstein concluded that Kilgore met Florida’s criteria for intellectual
    disability.
    Dr. Dee, Kilgore’s neuropsychology expert, agreed with Eisenstein’s
    conclusion, although Dee advised the court that he had undertaken no additional
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    interviews or testing of Kilgore since 2005. He said that he had reviewed the other
    expert reports and had also spoken for an hour by telephone with Dr. Eisenstein.
    Dr. Dee recalled that in 1994 his diagnostic impression was that Kilgore presented
    with intellectual disability and mild dementia. He explained that this 1994
    diagnosis was based largely on Kilgore’s physical condition and his self-report
    because he had no other records to speak of. Dee believed that Kilgore’s apparent
    mental deficiency was possibly the result of a head injury, or of microangiopathy
    encephalic vascular disease due to Kilgore’s advanced diabetes, which had also
    resulted in the amputation of one of his lower legs. Dr. Dee admitted that
    previously he did not have enough information about adaptive functioning to opine
    about whether Kilgore met Florida’s definition of intellectual disability. But, after
    reviewing Dr. Eisenstein’s report and speaking with Eisenstein, he now could offer
    an opinion: “Well, there is nothing that he found or I found that is inconsistent with
    [intellectual disability]. It appears to fit the three-prong criteria that we use, low
    IQ seen before age 18 or actually age 15, I think was the original determination,
    and deficits in adaptive functioning in two or more areas.”
    The State countered with the opinion of Dr. Gamache, who opined that
    Kilgore did not meet Florida’s definition for intellectual disability. As for the first
    prong, Dr. Gamache administered the WAIS-III test to Kilgore, who obtained a
    full-scale IQ score of 85. Dr. Gamache determined that these results accurately
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    mirrored Kilgore’s functional abilities, and that Kilgore had been “straightforward
    [and] honest” and “put forward full effort” during the testing. Dr. Gamache
    administered ten of the eleven standard WAIS subtests to Kilgore, but was unable
    to administer the last one because Kilgore’s wheelchair and shackles prevented
    him from using the table as necessary for the test. 3 Dr. Gamache did not believe
    that the omission of that subtest affected Kilgore’s overall IQ score. Gamache
    concluded that Kilgore’s intellectual functioning was not two or more standard
    deviations below average, as required by Florida law. Because Gamache saw no
    evidence in the WAIS testing that Kilgore could meet the intellectual functioning
    prong of the Florida statute, he did not reach any conclusions about the other two
    prongs of the test, though he did offer observations suggesting that Kilgore would
    not meet those criteria either.
    As for Kilgore’s intellectual functioning before age eighteen, Dr. Gamache
    reported that Kilgore grew up in an impoverished background, without the kind of
    academic and intellectual stimulation that would be ideal in facilitating school
    achievement and in maximizing one’s intelligence. Kilgore told Dr. Gamache that
    he had come from a large family, his parents had remained together until he was
    about five, and he also lived with an aunt. Kilgore also admitted to Gamache that
    he had begun to get into trouble around the age of twelve, and was sent to the
    3
    Of these eleven tests, Dr. Gamache administered six “verbal subtests” and four “performance
    subtests.” The one test that he was unable to administer was the “picture arrangement test.”
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    Oakley Training School in Mississippi, where he remained until age fifteen.
    Kilgore was credited with completing the fifth grade while at the training school.
    As for Kilgore’s adaptive functioning, Gamache noted that Kilgore got out
    of the reform school around 1965 and went to prison as an adult in 1970. Between
    1965 and 1970, Kilgore lived with his mother and step-father in Lakeland, Florida,
    for part of that time, and he also lived with a female acquaintance and then on his
    own for part of the time. As a teenager, Kilgore worked for a woman who was a
    palm reader -- Kilgore took care of her home and office, tended the grounds, and
    passed out promotional cards around town. Although Kilgore operated a vehicle,
    he never tried to get a driver’s license.
    When Dr. Gamache asked Kilgore about his adult employment, Kilgore
    explained that he’d been locked up for most of his adult life; therefore, his adult
    vocational activities were in an institutional setting. Kilgore said he worked at the
    license tag factory, twice for extended periods of time, and he’d also done
    custodial work and kitchen work at the prison. Kilgore also said that he had taught
    himself to read and write by repeatedly going through comic books and magazines
    available at the Department of Corrections. Dr. Gamache thought this was
    significant since it showed that Kilgore was motivated and “creative” and made
    “use of the resources that he had available to him to try and improve his abilities.”
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    Dr. Gamache noted that when he met with Kilgore, Kilgore did not have any
    difficulty understanding or answering questions or providing background
    information. Dr. Gamache added that in March 1990, Kilgore underwent a
    neurological examination while in the Department of Corrections and the results of
    the exam were normal -- there was no evidence of “any impairment of brain
    function or any neurological condition.” When asked about any head injury,
    Kilgore advised that he was in a fight around 1967, and was thrown on his head.
    Kilgore considered it insignificant; there was no evidence of seizures, loss of
    consciousness, or cognitive impairment. Kilgore was not aware of ever being
    considered to be intellectually disabled; and Kilgore told Dr. Gamache, in no
    uncertain terms, that he was not intellectually disabled. Dr. Gamache agreed: “It’s
    my opinion within a reasonable degree of psychological certainty that Mr. Kilgore
    is not [intellectually disabled].”
    C.
    The state trial judge ultimately issued a 110-page final order on December 3,
    2008, denying Kilgore’s post-conviction motion in its entirety. In discussing the
    intellectual disability claim, the court first noted that “under Florida law, one of the
    criteria to determine if a person is [intellectually disabled] is that he or she has an
    IQ of 70 or below.” The court observed that of the six IQ tests that Kilgore had
    taken, “the only full scale IQ score which meets Florida’s [intellectual disability]
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    criteria is the score of 67 obtained during Dr. Dee’s 1994” test. The court found,
    however, that “that single score does not sufficiently satisfy the intellectual
    functioning prong for [intellectual disability].” As the court explained, the score of
    67 was “significantly lower than any of the other five IQ scores”; three of the other
    IQ scores were “very, very similar, 74, 75, 76”; the 1994 test was “prorated,”
    which means that the score was estimated based on Kilgore’s performance on only
    seven subtests (four verbal and three performance) of the eleven total subtests;
    even Dr. Dee admitted that proration could lead to inferior results; and the purpose
    of Dr. Dee’s 1994 evaluation was not to assess Kilgore’s intellectual disability but
    rather to conduct a neuropsychological exam.
    The state trial court concluded that without the IQ score of 67, whether
    measured by a preponderance of the evidence or under a clear and convincing
    evidence standard, the petitioner did not meet Florida’s requirements for finding
    significantly subaverage general intellectual functioning. The court also said that
    because Kilgore did not show subaverage general intellectual functioning, it would
    not consider the other two prongs of Florida’s intellectual disability test. See Fla.
    Stat. § 921.137(1) (2007); Fla. R. Crim. P. 3.203(b).
    Kilgore appealed to the Florida Supreme Court, which denied all relief on
    November 18, 2010. The Florida Supreme Court began its analysis of Kilgore’s
    intellectual disability claim by recognizing that the United States Supreme Court
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    had held that execution of the intellectually disabled constitutes “excessive”
    punishment under the Eighth Amendment to the United States Constitution, citing
    Atkins v. Virginia, 
    536 U.S. 304
    (2002). See 
    Kilgore, 55 So. 3d at 508-09
    .
    Relying on its prior precedent, the Florida Supreme Court then observed that
    requiring an IQ score of 70 or below to establish the first prong of intellectual
    disability did not violate the command of Atkins. See 
    id. Turning to
    the facts of
    Kilgore’s case, the Florida Supreme Court found that “the three IQ scores of 74,
    75, and 76 appear to be the scores most representative as to whether Kilgore
    possesses ‘subaverage general intellectual functioning.’” 
    Id. at 509.
    Referencing
    the “[c]ompetent, substantial evidence” surrounding his scores, the Florida
    Supreme Court sustained the state trial court’s finding that Kilgore did not meet the
    70-IQ cutoff and, thus, held that he could not establish intellectual disability under
    Florida law. 
    Id. D. After
    the Florida Supreme Court denied Kilgore’s motion for rehearing and
    issued its mandate, Kilgore commenced this federal habeas petition, pursuant to 28
    U.S.C. § 2254, in the United States District Court for the Middle District of
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    Florida. Some time later, the federal district court denied Kilgore’s petition in its
    entirety. 4
    In rejecting Kilgore’s intellectual disability claim, the district court
    concluded that the Florida Supreme Court’s decision -- imposing a cut-off IQ score
    of 70 -- was neither contrary to, nor an unreasonable application of controlling
    Supreme Court law. Among other things, the court found no merit to Kilgore’s
    charge that Atkins required the states to impose an IQ cutoff of 75. Citing Atkins,
    the district court explained that the Supreme Court expressly had left to the states
    the determination of who should be classified as intellectually disabled. Because
    of this explicit delegation in Atkins, the district court determined that the Florida
    Supreme Court’s decision did not run afoul of Supreme Court law.
    After the district court denied Kilgore’s petition, the United States Supreme
    Court ruled differently in Hall v. Florida, 572 U.S. ––––, 
    134 S. Ct. 1986
    (2014).
    Hall held that “when a defendant’s IQ test score falls within the test’s
    acknowledged and inherent margin of error [±5], the defendant must be able to
    present additional evidence of intellectual disability, including testimony regarding
    adaptive deficits.” 
    Id. at 2001.
    Hall explained that a state’s assessment of a
    defendant’s intellectual disability should focus on whether he has evidenced,
    beginning “during the developmental period,” both (1) “significantly subaverage
    4
    Kilgore argued that his counsel was ineffective at the guilt, penalty and postconviction phases,
    and that he was intellectually disabled.
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    intellectual functioning,” and (2) “deficits in adaptive functioning (the inability to
    learn basic skills and adjust behavior to changing circumstances).” 
    Id. at 1994.
    The Court emphasized that these criteria are “interrelated” and that no “single
    factor [is] dispositive.” 
    Id. at 2001.
    Thus, “an individual with an IQ test score
    between 70 and 75 or lower may show intellectual disability by presenting
    additional evidence regarding difficulties in adaptive functioning.” 
    Id. at 2000
    (quotation and citation omitted).
    In light of this intervening decision, we granted Kilgore a certificate of
    appealability to address whether “the Florida Supreme Court’s refusal to grant
    Kilgore relief on the basis of [intellectual disability] violated the Cruel and
    Unusual Punishment Clause of the Eighth Amendment, applied to the States
    through the Fourteenth Amendment.” This timely appeal followed.
    II.
    A.
    We review de novo the district court’s denial of a 28 U.S.C. § 2254 petition.
    Ward v. Hall, 
    592 F.3d 1144
    , 1155 (11th Cir. 2010). Because Kilgore filed his
    federal habeas petition after 24 April 1996, this case is governed by the Anti-
    terrorism and Effective Death Penalty Act of 1996 (“AEDPA”). 
    Id. Under AEDPA,
    if a state court has adjudicated the merits of a claim -- as the state court
    did here -- we cannot grant habeas relief unless the state court’s decision “was
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    contrary to, or involved an unreasonable application of, clearly established Federal
    law, as determined by the Supreme Court of the United States,” or “was based on
    an unreasonable determination of the facts in light of the evidence presented in the
    State court proceeding.” 28 U.S.C. § 2254(d).5 “Under § 2254(d)(1)’s ‘contrary
    to’ clause, we grant relief only ‘if the state court arrives at a conclusion opposite to
    that reached by [the Supreme] Court on a question of law or if the state court
    decides a case differently than [the Supreme Court] has on a set of materially
    indistinguishable facts.’” Jones v. GDCP Warden, 
    753 F.3d 1171
    , 1182 (11th Cir.
    2014) (alteration in original) (quoting Williams v. Taylor, 
    529 U.S. 362
    , 413
    (2000)). “Under § 2254(d)(1)’s ‘unreasonable application’ clause, we grant relief
    only ‘if the state court identifies the correct governing legal principle from [the
    Supreme] Court’s decisions but unreasonably applies that principle to the facts of
    the prisoner’s case.’” 
    Id. (alteration in
    original) (quoting 
    Williams, 529 U.S. at 413
    ).
    5
    At oral argument, Kilgore’s counsel mentioned in passing the Supreme Court’s recent decision
    in Brumfield v. Cain, 
    135 S. Ct. 2269
    (2015). There, a Louisiana death-row inmate had
    requested an opportunity to prove he was intellectually disabled in state court. Without affording
    him an evidentiary hearing or granting him time or funding to secure expert evidence, the state
    court rejected his claim. 
    Id. at 2273.
    The Supreme Court held that Brumfield was entitled to
    have his Atkins claim considered on the merits in federal court because the state court’s decision
    was “based on an unreasonable determination of the facts in light of the evidence presented in
    the State court proceeding,” as provided for in 28 U.S.C. § 2254(d)(2). 
    Id. Here, however,
    the
    “unreasonable determination of the facts” clause is not at issue because Kilgore has not
    challenged any factual determinations made by the state courts, nor has he made a § 2254(d)(2)
    argument. Moreover, in this case the petitioner was afforded an extensive hearing in the state
    court about his claimed intellectual disability.
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    To prevail under § 2254(d), a petitioner “must show that the state court’s
    ruling on the claim being presented in federal court was so lacking in justification
    that there was an error well understood and comprehended in existing law beyond
    any possibility for fairminded disagreement.” Harrington v. Richter, 
    562 U.S. 86
    ,
    103 (2011). Kilgore must show that the state court’s decision was “objectively
    unreasonable, not merely wrong; even clear error will not suffice.” White v.
    Woodall, 572 U.S. ––––, 
    134 S. Ct. 1697
    , 1702 (2014) (quotations omitted). Put
    differently, Kilgore must establish that no fairminded jurist would have reached the
    Florida court’s conclusion. See 
    Richter, 562 U.S. at 101
    . “If this standard is
    difficult to meet, that is because it was meant to be.” 
    Id. at 102.
    B.
    We address today one issue -- Kilgore’s argument that the Florida Supreme
    Court unreasonably applied clearly established Supreme Court law when it upheld
    the imposition of the death penalty despite his claim of intellectual disability.
    First, he argues that the Florida Supreme Court’s decision violated clearly
    established Supreme Court law embodied in Hall v. 
    Florida, 134 S. Ct. at 2001
    .
    Kilgore says that because the Florida Supreme Court imposed a bright-line IQ
    cutoff of 70 in his case, it violated Hall. Second, the petitioner argues that if Hall
    was not clearly established Supreme Court law at the time the Florida Supreme
    Court denied him relief, then Hall should be applied retroactively. Finally, he
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    claims that even if Hall cannot be applied retroactively, its holding was a “refined
    explication” or an “interpretat[ion]” of Atkins, the clearly established Supreme
    Court law at the time of the Florida Supreme Court’s decision. After careful
    review, we are unpersuaded. The Florida Supreme Court’s determination was
    neither contrary to nor an unreasonable application of clearly established Supreme
    Court law.
    We begin with this first principle: under § 2254(d)(1) of AEDPA, we must
    uphold a state court decision unless it is “contrary to, or involved an unreasonable
    application of, clearly established Federal law, as determined by the Supreme
    Court of the United States.” 28 U.S.C. § 2254(d)(1). “‘[C]learly established
    Federal law’ under § 2254(d)(1) is the governing legal principle or principles set
    forth by the Supreme Court at the time the state court renders its decision.”
    Lockyer v. Andrade, 
    538 U.S. 63
    , 71-72 (2003) (emphasis added); see also
    
    Williams, 529 U.S. at 412
    (Section 2254(d)(1)’s “clearly established” phrase
    “refers to the holdings . . . of [the Supreme] Court’s decisions as of the time of the
    relevant state-court decision.”). It is abundantly clear that AEDPA “sets several
    limits on the power of a federal court to grant an application for a writ of habeas
    corpus on behalf of a state prisoner.” Cullen v. Pinholster, 
    563 U.S. 170
    , 131 S.
    Ct. 1388, 1398 (2011); see also Miller-El v. Cockrell, 
    537 U.S. 322
    , 326 (2003)
    (“In the interest of finality AEDPA constrains a federal court’s power to disturb
    19
    Case: 13-11825     Date Filed: 11/16/2015   Page: 20 of 34
    state-court convictions.”). The “clearly established Federal law” requirement is
    one of those limits.
    The Florida Supreme Court affirmed Kilgore’s convictions and sentences in
    1996, and rejected Kilgore’s intellectual disability claim in 2010. As of 2010, the
    United States Supreme Court had not yet decided Hall. Because the Florida
    Supreme Court’s decisions in Kilgore’s case predated Hall, Hall’s holding was not
    “clearly established” for purposes of § 2254(d)(1) of AEDPA.
    Kilgore claims that even if Hall was not “clearly established” in 2010, its
    holding merely “interpreted” or “refined” the “clearly established [Supreme Court]
    law” extant at the time of the Florida Supreme Court’s decision. At that time,
    Atkins set forth the “clearly established [Supreme Court] law” concerning
    intellectual disability. See Hill v. Humphrey, 
    662 F.3d 1335
    , 1337 (11th Cir.
    2011) (en banc) (applying “clearly established federal law, as announced in
    Atkins” to a 2003 state post-conviction decision); see also In re Holladay, 
    331 F.3d 1169
    , 1172 (11th Cir. 2003) (holding that Atkins applied retroactively on federal
    habeas review, no matter when the sentence was imposed). However, if Hall
    “interpreted” or “refined” Atkins, that does not mean its holding was “clearly
    established Federal law” under § 2254(d)(1). As we’ve said, “[t]he Supreme Court
    has repeatedly held that only the actual holdings of its decisions can ‘clearly
    20
    Case: 13-11825      Date Filed: 11/16/2015     Page: 21 of 34
    establish[]’ federal law for § 2254(d)(1) purposes.” Loggins v. Thomas, 
    654 F.3d 1204
    , 1222 (11th Cir. 2011) (quotations omitted).
    Hall’s holding was not clearly established by Atkins. Atkins held that the
    execution of intellectually disabled offenders is categorically prohibited by the
    Eighth Amendment. Notably, Atkins did not define intellectual disability, nor did
    it direct the states on how to define intellectual disability, nor, finally, did it
    provide the range of IQ scores that could be indicative of intellectual disability.
    Rather, Atkins expressly left it to the states to develop “appropriate ways to
    enforce the constitutional restriction” on executing the intellectually disabled. See
    
    Atkins, 536 U.S. at 317
    (citation and quotation omitted). Or as the Supreme Court
    put it in Bobby v. Bies, “[Atkins] did not provide definitive procedural or
    substantive guides for determining when a person who claims [intellectual
    disability] ‘will be so impaired as to fall [within Atkins’s compass].’” 
    556 U.S. 825
    , 831 (2009); see also 
    Hill, 662 F.3d at 1338
    (“Atkins expressly left it for the
    states to develop the procedural and substantive guides for determining who is
    [intellectually disabled].”).
    Hall, however, changed course by requiring the states to recognize a margin
    of error of five points above or below an IQ score of 70 in assessing intellectual
    disability. As we’ve previously observed, “[f]or the first time in Hall, the Supreme
    Court imposed a new obligation on the states not dictated by Atkins because Hall
    21
    Case: 13-11825     Date Filed: 11/16/2015    Page: 22 of 34
    restricted the states’ previously recognized power to set procedures governing the
    execution of the intellectually disabled.” In re Henry, 
    757 F.3d 1151
    , 1158-59
    (11th Cir. 2014). “Nothing in Atkins dictated or compelled the Supreme Court in
    Hall to limit the states’ previously recognized power to set an IQ score of 70 as a
    hard cutoff.” 
    Id. at 1159.
    Even Hall itself expressly acknowledged that its holding was taking the
    Supreme Court’s prior precedents “further” and that the Court was using its
    “independent judgment” to declare the Florida statute unconstitutional. See 
    Hall, 134 S. Ct. at 1999-2000
    (“[T]he precedents of this Court ‘give us essential
    instruction,’ . . . but the inquiry must go further. . . . In this Court’s independent
    judgment, the Florida statute, as interpreted by its courts, is unconstitutional.”).
    Moreover, Justice Alito’s dissenting opinion (joined by Chief Justice Roberts,
    Justice Scalia, and Justice Thomas) observed that the Hall majority “sharply
    depart[ed] from the framework prescribed in prior Eighth Amendment cases,” 
    id. at 2002
    (Alito, J., dissenting); that Hall “mark[ed] a new and most unwise turn in
    our Eighth Amendment case law,” id.; and that Hall relied on “the standards of
    professional associations,” unlike “our modern Eighth Amendment cases,” which
    relied on “our society’s standards,” 
    id. at 2005.
    Indeed, in Beard v. Banks, 
    542 U.S. 406
    , 416 (2004), the Supreme Court
    observed that it may rely on a dissenting opinion to determine whether the holding
    22
    Case: 13-11825     Date Filed: 11/16/2015    Page: 23 of 34
    in a case was dictated by existing precedent. There, the Supreme Court analyzed
    whether the rule drawn from Lockett v. Ohio, 
    438 U.S. 586
    (1978) -- that a
    sentencer “[can]not be precluded from considering” any mitigating evidence --
    compelled the rule later announced in Mills v. Maryland, 
    486 U.S. 367
    (1988) --
    that states may not require jurors to find mitigating factors unanimously. In
    rejecting the argument, the Supreme Court pointed out that, in Mills and later
    related cases, groups of dissenting Justices had argued that Lockett addressed a
    fundamentally different issue than was raised in Mills. Recognizing that these
    dissents meant that “reasonable jurists could have differed as to whether the
    Lockett principle compelled Mills,” Beard concluded that Lockett did not even
    support, let alone compel, the Mills rule. See 
    Beard, 542 U.S. at 415
    (discussing
    
    Mills, 486 U.S. at 394
    (Rehnquist, C.J., dissenting), and McKoy v. North Carolina,
    
    494 U.S. 433
    , 464-66 (1990) (Scalia, J., dissenting)). So too here -- the
    observations from Hall’s four dissenting Justices further illustrate that its holding
    was not clearly established in the Court’s existing precedent.
    The long and short of it is that the Florida Supreme Court was tasked with
    applying Atkins to Kilgore’s case. Florida’s high court properly recognized Atkins
    as the controlling law, and did not unreasonably apply it. As the Supreme Court
    has made abundantly clear, whether a state court “unreasonably applies” clearly
    established Supreme Court law depends “not [on] whether a federal court believes
    23
    Case: 13-11825     Date Filed: 11/16/2015    Page: 24 of 34
    the state court’s determination was incorrect but whether that determination was
    unreasonable -- a substantially higher threshold.” Schriro v. Landrigan, 
    550 U.S. 465
    , 473 (2007). A state court’s application of federal law is not unreasonable so
    long as “fairminded jurists could disagree” on the correctness of the state court’s
    decision. Yarborough v. Alvarado, 
    541 U.S. 652
    , 664 (2004).
    Atkins expressly left it to the states to develop “appropriate ways to enforce
    the constitutional restriction” on executing the intellectually disabled. See 
    Atkins, 536 U.S. at 317
    (citation and quotation omitted). In rejecting Kilgore’s claim, the
    Florida Supreme Court relied on its prior precedent, which repeatedly had held that
    the firm IQ-of-70 cutoff used in its intellectually disability test did not violate
    Atkins. See, e.g., Nixon v. State, 
    2 So. 3d 137
    , 142 (Fla. 2009); Cherry v. State,
    
    959 So. 2d 702
    , 711-14 (Fla. 2007) (per curiam). Nothing in Atkins suggested that
    a bright-line IQ cutoff of 70 ran afoul of the prohibition on executing the
    intellectually disabled. Thus, the Florida Supreme Court did not unreasonably
    apply Atkins’s ban on the execution of the intellectually disabled by setting a
    bright-line IQ cutoff at 70.
    C.
    Our inquiry does not end there because Kilgore argues that even if Hall was
    not clearly established Supreme Court law at the time the Florida Supreme Court
    ruled, Hall should be applied retroactively to his case. In Williams, Justice
    24
    Case: 13-11825     Date Filed: 11/16/2015    Page: 25 of 34
    O’Connor, writing for five Justices, observed that the standard found in §
    2254(d)(1) -- requiring federal courts to ascertain whether a state court decision
    involves an “unreasonable application of . . . clearly established Federal law” -- is
    “related” to (though different from) the “inquiry” courts perform when applying
    the nonretroactivity rule found in Teague v. Lane, 
    489 U.S. 288
    (1989). 
    Williams, 529 U.S. at 409
    . Teague, a pre-AEDPA case, held that a petitioner was not entitled
    to federal habeas relief when he was relying on a “new rule” of federal law, unless
    certain exceptions are met. See Lambrix v. Singletary, 
    520 U.S. 518
    , 527 (1997)
    (citing 
    Teague, 489 U.S. at 310
    ). Justice O’Connor noted in Williams that
    “whatever would qualify as an old rule under our Teague jurisprudence will
    constitute ‘clearly established Federal law, as determined by the Supreme Court of
    the United States’ under § 2254(d)(1)” -- so long as the “old rule” under Teague is
    found in the Supreme Court’s jurisprudence. 
    Williams, 529 U.S. at 412
    ; see also
    
    Loggins, 654 F.3d at 1221
    (“The content of the § 2254(d) unreasonable application
    test is drawn in large part from the Teague . . . nonretroactivity doctrine and the
    decisions explicating it.” (quotation omitted)).
    Under Teague, “a case announces a new rule if the result was not dictated by
    precedent existing at the time the defendant’s conviction became 
    final.” 489 U.S. at 301
    . If that requirement has been met, there are two exceptions to Teague’s bar
    on retroactivity: (1) new rules that place an entire category of primary conduct
    25
    Case: 13-11825       Date Filed: 11/16/2015       Page: 26 of 34
    beyond the reach of the criminal law, or that prohibit imposition of a certain type
    of punishment for a class of defendants because of their status or offense; and (2)
    new “watershed rules of criminal procedure” that are necessary to the fundamental
    fairness of the criminal proceeding. 
    Id. at 311-13;
    Sawyer v. Smith, 
    497 U.S. 227
    ,
    241-42 (1990). Kilgore relies on the first Teague exception, but not the second.
    Neither applies here. 6
    In the application of Teague, we first ask whether Hall announced a new rule
    of law, or whether it was “dictated” by existing precedent at the time the Florida
    Supreme Court ruled. See Graham v. Collins, 
    506 U.S. 461
    , 467 (1993) (“A
    holding constitutes a ‘new rule’ within the meaning of Teague if it ‘breaks new
    ground,’ ‘imposes a new obligation on the States or the Federal Government,’ or
    was not ‘dictated by precedent existing at the time the defendant’s conviction
    became final.’”) (quoting 
    Teague, 489 U.S. at 301
    ); Butler v. McKellar, 
    494 U.S. 407
    , 415 (1990) (“[T]he fact that a court says that its decision is within the ‘logical
    6
    Notably, neither this Court nor the Supreme Court has squarely answered “[w]hether §
    2254(d)(1) would bar a federal habeas petitioner from relying on a decision that came after the
    last state-court adjudication on the merits, but fell within one of the exceptions recognized in
    Teague.” See Greene v. Fisher, 
    132 S. Ct. 38
    , 44 n.* (2011) (citation omitted); 
    Loggins, 654 F.3d at 1221
    (declining to consider whether “the exceptions to the Teague non-retroactivity
    doctrine survived the AEDPA amendments and live on in the partial codification of the doctrine
    that is § 2254(d)(1)”). In Loggins, we said that “[w]e have sidestepped that question before, see
    Grossman v. McDonough, 
    466 F.3d 1325
    , 1341 n. 13 (11th Cir. 2006), and we are content to do
    so again because the answer will not affect the result in this case.” 
    Loggins, 654 F.3d at 1221
    ;
    see also 
    Greene, 132 S. Ct. at 44
    n.* (concluding that Teague’s application to § 2254(d)(1) “is a
    question we need not address to resolve this case”). Because Kilgore has not shown that Hall
    should be applied retroactively under Teague or its exceptions, again we need not answer
    whether Teague’s exceptions survive § 2254(d)(1).
    26
    Case: 13-11825     Date Filed: 11/16/2015    Page: 27 of 34
    compass’ of an earlier decision, or indeed that it is ‘controlled’ by a prior decision,
    is not conclusive for purposes of deciding whether the current decision is a ‘new
    rule’ under Teague.”). As we have already observed, this question was squarely
    addressed in In re Henry, where we rejected the argument that Hall’s holding --
    limiting the states’ previously recognized power to set an IQ score of 70 as a hard
    cutoff -- was “clearly established” by 
    Atkins, 536 U.S. at 317
    . We said that Atkins
    had expressly “le[ft] to the State[s] the task of developing appropriate ways to
    enforce the constitutional restriction upon [their] execution of sentences.” In re
    
    Henry, 757 F.3d at 1158
    (alteration in original) (quoting 
    Atkins, 536 U.S. at 317
    ).
    Therefore, we held that Hall necessarily established a new rule of constitutional
    law. 
    Id. at 1159.
    Since Hall’s holding undeniably is “new,” we turn to Kilgore’s claim that it
    meets the first Teague exception -- that it prohibits the imposition of a certain type
    of punishment for a class of defendants because of their status or offense.
    Applying this exception, the Supreme Court has said that a rule prohibiting “the
    execution of [intellectually disabled] persons . . . would be applicable to defendants
    on collateral review” because “a new rule placing a certain class of individuals
    beyond the State’s power to punish by death is analogous to a new rule placing
    certain conduct beyond the State’s power to punish at all.” Penry v. Lynaugh, 
    492 U.S. 302
    , 330 (1989). Thus, when Atkins later held that “an exclusion for the
    27
    Case: 13-11825     Date Filed: 11/16/2015   Page: 28 of 34
    [intellectually disabled] is 
    appropriate,” 536 U.S. at 319
    , we recognized that Atkins
    established a new rule of constitutional law. We concluded that “the new
    constitutional rule abstractly described in Penry and formally articulated in Atkins
    is retroactively applicable to cases on collateral review.” In re 
    Holladay, 331 F.3d at 1173
    .
    But the same result does not hold true for Hall, which merely provides new
    procedures for ensuring that states follow the rule enunciated in Atkins. As we
    held in In re Henry, Hall did not expand the class of individuals protected by
    Atkins’s prohibition. In re 
    Henry, 757 F.3d at 1161
    . Rather, Hall created a
    procedural requirement that those with IQ test scores within the test’s standard of
    error would have the opportunity to otherwise show intellectual disability. Hall
    guaranteed only a chance to present evidence, not ultimate relief. Therefore, as we
    recognized in In re Henry, Penry in no way dictated that the rule announced in Hall
    is retroactive to cases on collateral review. See 
    id. Nor did
    Hall, as the petitioner recognizes, announce a “watershed” rule
    under Teague’s second exception. “To fall within this exception, a new rule must
    meet two requirements: Infringement of the rule must seriously diminish the
    likelihood of obtaining an accurate conviction, and the rule must alter our
    understanding of the bedrock procedural elements essential to the fairness of a
    proceeding.” Tyler v. Cain, 
    533 U.S. 656
    , 665 (2001) (quotation and emphasis
    28
    Case: 13-11825     Date Filed: 11/16/2015   Page: 29 of 34
    omitted). The presentation of evidence by a defendant seeking to establish
    intellectual disability does not meet this standard. See 
    Beard, 542 U.S. at 417
    (discussing the limited scope of the exception and noting that the Supreme Court in
    “providing guidance as to what might fall within this exception,” has “repeatedly
    referred to the rule of Gideon v. Wainwright, 
    372 U.S. 335
    (1963) (right to
    counsel), and only this rule”). Hall does not meet any of the Teague exceptions to
    nonretroactivity.
    Kilgore attempts to distinguish In re Henry in order to avoid its
    unambiguous holdings about nonretroactivity. We remain unpersuaded. There is
    no denying that In re Henry arose in the context of a “second or successive”
    application for habeas relief, 28 U.S.C. § 2244(b)(2)(A) (asking whether “the claim
    relies on a new rule of constitutional law, made retroactive to cases on collateral
    review by the Supreme Court, that was previously unavailable”), whereas here we
    are called upon to decide Kilgore’s first federal habeas petition, see 28 U.S.C. §
    2254(d) (asking whether the state court’s decision “was contrary to, or involved an
    unreasonable application of, clearly established Federal law, as determined by the
    Supreme Court of the United States”). But that distinction makes no difference. In
    both In re Henry and in this case, we look to Teague to determine whether Hall has
    set forth a rule that should be applied retroactively. Compare In re 
    Henry, 757 F.3d at 1158
    (citing Teague in the § 2244(b) inquiry), with 
    Williams, 529 U.S. at 29
                 Case: 13-11825     Date Filed: 11/16/2015    Page: 30 of 34
    412 (citing Teague in the § 2254(d)(1) inquiry for a first habeas petition). Indeed,
    in Williams, the Supreme Court acknowledged that “whatever would qualify as an
    old rule under our Teague jurisprudence” would qualify as the rule to be applied
    for purposes of § 2254(d)(1), so long as the rule had been announced by the
    Supreme 
    Court. 529 U.S. at 412
    . Because the question in both contexts -- whether
    Hall constitutes the Supreme Court law applicable under AEDPA to the state court
    decision being challenged -- is the same, the answer is the same as well.
    Nor does it matter that Henry’s IQ allegedly may have been 78, which, says
    Kilgore, put Henry outside the protection of Hall. To begin with, In re Henry’s
    ruling on retroactivity in no way hinged on Henry’s IQ. Rather, we addressed the
    retroactivity issue first, and, only after having decided the statutory question of
    retroactivity did we hold that Henry had not met the other prudential requirement
    we established in the case law -- that “there is a reasonable likelihood” he is
    entitled to relief under the new rule, In re Holladay, 
    331 F.3d 1169
    , 1173 (11th Cir.
    2003). See In re 
    Henry, 757 F.3d at 1161
    (Henry’s “problem is compounded, . . .
    because even if the Supreme Court had made the rule announced in Hall
    retroactive to cases on collateral review -- and it has not done so -- we still could
    not authorize the filing of a second or successive habeas petition because Henry
    has not made a ‘sufficient showing of possible merit to warrant a further
    exploration by the district court.’”) (citation omitted). We arranged the analysis in
    30
    Case: 13-11825     Date Filed: 11/16/2015    Page: 31 of 34
    that order because we were required to do so. See 
    id. at 1157
    n.9 (“[B]efore
    deciding whether a petitioner has shown a reasonable likelihood of benefiting from
    a rule, we are obliged to address the statutory command and decide whether that
    rule was ‘a new rule of constitutional law, made retroactive to cases on collateral
    review by the Supreme Court, that was previously unavailable.’”) (quoting 28
    U.S.C. § 2244(b)(2)(A)). In re Henry squarely addressed Hall’s retroactivity,
    regardless of Henry’s IQ score.
    Moreover, even if we were to say that this was an alternative holding,
    alternative holdings are binding precedent. Bravo v. United States, 
    532 F.3d 1154
    ,
    1162 (11th Cir. 2008) (“[I]n this circuit additional or alternative holdings are not
    dicta, but instead are as binding as solitary holdings.”); see also Massachusetts v.
    United States, 
    333 U.S. 611
    , 623 (1948) (explaining that where a decision “rested
    as much upon the one determination as the other . . . the adjudication is effective
    for both”). This means that if our ruling on the merits of Henry’s claim was on
    equal footing with our ruling on retroactivity, both rulings are of equal import, and
    both bind us today. Plainly, nothing meaningfully distinguishes In re Henry from
    this case, nor otherwise convinces us that Hall can be applied retroactively.
    D.
    Finally, even if we were writing on a blank slate, unencumbered by the
    command of § 2254(d)(1) and our unambiguous holding in In re Henry, we would
    31
    Case: 13-11825      Date Filed: 11/16/2015    Page: 32 of 34
    still decline to apply Hall retroactively. As the Supreme Court made abundantly
    clear in Teague, there are powerful reasons for a federal court sitting in habeas
    corpus to judge a state court’s decision on the basis of the law as it existed at the
    time the state court rendered its decision. The principle of nonretroactivity was
    derived in substantial measure from the purpose and function of federal habeas
    corpus -- that is, to encourage “trial and appellate courts throughout the land to
    conduct their proceedings in a manner consistent with established constitutional
    standards.” 
    Teague, 489 U.S. at 306
    (quoting Desist v. United States, 
    394 U.S. 244
    , 262-63 (1969) (Harlan, J., dissenting)). According to the Supreme Court, “the
    habeas court need only apply the constitutional standards that prevailed at the time
    the original proceedings took place” in order “to force the trial and appellate courts
    to toe the constitutional mark.” 
    Id. at 306-07
    (quotations, brackets, and alterations
    omitted). Teague further explained that applying new rules on collateral review
    would “seriously undermine[] the principle of finality which is essential to the
    operation of our criminal justice system. Without finality, the criminal law is
    deprived of much of its deterrent effect.” 
    Id. at 309.
    “No one, not criminal
    defendants, not the judicial system, not society as a whole is benefited by a
    judgment providing that a man shall tentatively go to jail today, but tomorrow and
    every day thereafter his continued incarceration shall be subject to fresh litigation.”
    
    Id. (quoting Mackey
    v. United States, 
    401 U.S. 667
    , 691 (1971) (Harlan, J.,
    32
    Case: 13-11825      Date Filed: 11/16/2015    Page: 33 of 34
    concurring in judgments in part and dissenting in part)). Teague also explained
    that “the application of new rules to cases on collateral review” would impose
    great costs “by continually forc[ing] the States to marshal resources in order to
    keep in prison defendants whose trials and appeals conformed to then-existing
    constitutional standards.” 
    Id. at 310.
    Justice O’Connor, writing for a plurality in Teague, concluded that habeas
    does not exist just to serve some “perceived need to assure that an individual
    accused of a crime is afforded a trial free of constitutional error,” 
    id. at 308
    (quoting Kuhlmann v. Wilson, 
    477 U.S. 436
    , 447 (1986)); instead, weighty
    “interests of comity and finality” persuaded the Court that new rules governing
    criminal prosecutions should not be applied retroactively on collateral review to
    cases that are already final, 
    id. These considerations
    apply here. In Hall, the
    United States Supreme Court no longer took a hands-off approach to the states’
    intellectual disability definitions. To retroactively apply this kind of new
    procedural rule to the final determination of a state court appeal would impose the
    very uncertainty and costs on the states that Teague warned against -- discouraging
    the states from rigorously developing and following their intellectual disability
    law, decreasing the importance of finality and its effect on deterrence given the
    ever-changing nature of our understanding of intellectual disability, and
    33
    Case: 13-11825        Date Filed: 11/16/2015        Page: 34 of 34
    unnecessarily pressing the states to re-evaluate defendants each time intellectual
    disability standards are changed.7
    III.
    In short, Kilgore has failed to establish that the Florida Supreme Court’s
    decision was either contrary to, or an unreasonable application of, clearly
    established Supreme Court law, as it existed at the time the state court rendered its
    decision. He has also failed to convince us that we should apply retroactively the
    Supreme Court’s recent decision in Hall. We, therefore, affirm the denial of
    Kilgore’s petition for habeas relief.
    AFFIRMED.
    7
    Notably, none of the cases Kilgore cites -- all from other circuits -- has squarely held that Hall
    is retroactively applicable. The only circuit case we’ve located that has decided the issue is an
    unpublished decision by the Eighth Circuit, Goodwin v. Steele, No. 14-3739 (8th Cir. Dec. 9,
    2014), which held that “Goodwin has not made a prima facie showing that the Supreme Court
    has held that Hall is retroactive.” Slip Op. at 5.
    34