Michael Apelt v. Charles Ryan ( 2017 )


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  •                FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    MICHAEL APELT,                       Nos. 15-99013
    Petitioner-Appellee/            15-99015
    Cross-Appellant,
    D.C. No.
    v.                   2:98-cv-00882-ROS
    CHARLES L. RYAN,
    Respondent-Appellant/            OPINION
    Cross-Appellee.
    Appeal from the United States District Court
    for the District of Arizona
    Roslyn O. Silver, District Judge, Presiding
    Argued and Submitted August 9, 2017
    Pasadena, California
    Filed December 28, 2017
    Before: Jerome Farris, Consuelo M. Callahan,
    and John B. Owens, Circuit Judges.
    Opinion by Judge Callahan
    2                          APELT V. RYAN
    SUMMARY*
    Habeas Corpus / Death Penalty
    The panel vacated the district court’s judgment granting
    a writ of habeas corpus on Michael Apelt’s claim of
    ineffective assistance of counsel (IAC) at sentencing, and
    affirmed the district court’s denial of relief on Apelt’s other
    claims, in the state of Arizona’s appeal and Apelt’s cross
    appeal arising from his habeas corpus petition challenging his
    conviction and death sentence for first-degree murder.
    The panel held that while the state court’s alternate ruling
    on the merits of the IAC claims does not allow a federal court
    to ignore the state court’s finding of procedural default, it also
    does not bar a federal court from considering whether there
    is cause and prejudice excusing the default under Martinez v.
    Ryan, 
    566 U.S. 1
     (2012), and Coleman v. Thompson, 
    501 U.S. 722
     (1991). The panel held that counsel’s performance
    on Apelt’s first post-conviction petition was sufficiently
    deficient to provide cause for Apelt’s default. The panel
    agreed with the district court that Apelt was denied effective
    assistance of counsel at sentencing, but concluded that the
    state courts’ determination that counsel’s deficient
    performance at sentencing was not prejudicial was not
    unreasonable. The panel therefore vacated the district court’s
    grant of the writ.
    Regarding Apelt’s certified claims, the panel held (1) that
    Apelt has not shown that the state court’s denial of funding to
    *
    This summary constitutes no part of the opinion of the court. It has
    been prepared by court staff for the convenience of the reader.
    APELT V. RYAN                          3
    investigate mitigation violated his constitutional rights; and
    (2) that Apelt has not met his burden of showing that the state
    court’s denial of his mental-disability claim under Atkins v.
    Virginia, 
    536 U.S. 304
     (2002), is an unreasonable
    determination of the facts in light of the evidence presented.
    The panel certified for appeal Apelt’s claims (1) that the
    Arizona Supreme Court applied an unconstitutional causal
    connection requirement to his mitigation evidence; and (2)
    that counsel was ineffective at trial and sentencing for failing
    to challenge Apelt’s competency. The panel concluded that
    both claims are not persuasive.
    COUNSEL
    Kristina B. Reeves (argued), Assistant Attorney General,
    Capital Litigation Section; Lacey Stover Gard, Chief
    Counsel; Mark Brnovich, Attorney General; Office of the
    Attorney General, Phoenix, Arizona; for Respondent-
    Appellant/Cross-Appellee.
    Emily Katherine Skinner (argued), Arizona Capital
    Representation Project, Tucson, Arizona; Dana Carpenter,
    Phoenix, Arizona; for Petitioner-Appellee/Cross-Appellant.
    4                      APELT V. RYAN
    OPINION
    CALLAHAN, Circuit Judge:
    In December 1988, Michael Apelt (“Apelt”) and his
    brother, Rudi, murdered Apelt’s wife of less than two months
    in order to collect on her life insurance policy. The brothers
    were tried separately, convicted of first degree murder, and
    given death sentences. Having obtained no relief in the
    Arizona courts, Apelt filed a habeas petition in the United
    States District Court for the District of Arizona. After a stay
    of proceedings to allow Apelt to advance a claim in the state
    courts based on the Supreme Court’s decision in Atkins v.
    Virginia, 
    536 U.S. 304
     (2002), the district court granted the
    writ on one issue, ineffective assistance of counsel (“IAC”)
    at sentencing, and denied relief on all of Apelt’s other claims.
    In No. 15-99013, the state of Arizona appeals,
    challenging the district court’s jurisdiction to reach the merits
    of Apelt’s IAC claim, as well as its grant of the writ. In No.
    15-99015, Apelt appeals two claims certified by the district
    court: the denial in state court of funding to investigate
    mitigating evidence, and the determination that Apelt had
    failed to show that he was intellectually disabled under
    Atkins. In addition, Apelt raises two issues that were not
    certified by the district court: whether the Arizona Supreme
    Court applied an unconstitutional causal nexus requirement
    in reviewing Apelt’s sentence; and whether trial counsel was
    ineffective in failing to challenge Apelt’s competency to be
    tried and sentenced.
    Apelt’s habeas petition is subject to review under the
    Antiterrorism and Effective Death Penalty Act of 1996
    (“AEDPA”), 
    28 U.S.C. § 2254
    (d). See Mann v. Ryan,
    APELT V. RYAN                        5
    
    828 F.3d 1143
    , 1151 (9th Cir. 2016) (en banc). We first
    determine that federal court review was not procedurally
    barred. We then vacate the district court’s grant of relief
    because we cannot find the Arizona Supreme Court’s
    determination that Apelt’s counsel’s deficient performance at
    sentencing was not prejudicial to be clearly unreasonable.
    See Davis v. Ayala, 
    135 S. Ct. 2187
    , 2199 (2015); Cullen v.
    Pinholster, 
    563 U.S. 170
    , 189 (2011). We affirm the district
    court’s denial of relief on Apelt’s claims of inadequate
    funding to investigate mitigating evidence, and mental
    disability pursuant to Atkins, 
    536 U.S. 304
    . We grant the
    certificate of appealability for Apelt’s claims of an
    application of an unconstitutional causal nexus standard by
    the Arizona Supreme Court and for ineffective assistance of
    counsel in failing to challenge Apelt’s competency to stand
    trial, and we deny those claims on the merits.
    I.
    A. The Facts
    Michael Apelt, the youngest of seven siblings, was born
    in August 1963 in Germany. He came to the United States in
    the late summer of 1988. The underlying facts leading to
    Apelt’s conviction were fairly and fully set forth in the
    Arizona Supreme Court’s opinion, State v. Apelt, 
    176 Ariz. 349
    , 
    861 P.2d 634
     (Ariz. 1993), as follows:
    In August 1988, the defendant, his brother
    Rudi Apelt, Rudi’s wife Susanne, and
    Michael’s ex-girlfriend Anke Dorn, all
    German citizens, traveled to San Diego,
    California. The defendant and his brother met
    two women in a nightclub. Cheryl Rubenstein
    6                 APELT V. RYAN
    and Trudy Waters lived in Phoenix and were
    in San Diego to cater a party for Cheryl’s
    brother. They spent the evening chatting with
    the Apelts. Because Michael’s English was
    not very good and Rudi’s was worse,
    communication was difficult until they found
    an interpreter among the other patrons of the
    bar. The Apelts first claimed to be wind
    surfing board manufacturers, then Mercedes
    importers. Rudi denied being married.
    Before leaving, the women gave the Apelts
    their addresses and phone numbers.
    Approximately two weeks later the Apelts
    flew to Phoenix. Cheryl picked them up at the
    airport and took them to a hotel in Mesa.
    They soon moved to a nearby Motel 6, but
    pretended to be staying at the Holiday Inn, a
    more expensive hotel nearby. After a couple
    of weeks, they flew back to San Diego, picked
    up Anke Dorn and returned to Phoenix.
    Susanne, Rudi’s wife, returned to Germany.
    Over the next month the brothers met and
    “conned” a series of women, spinning tales of
    wealth and intrigue. The immediate goal of at
    least some of their ruses was to get money and
    other assistance. They were looking for a
    woman to marry Michael.
    On October 6, the Apelts met Annette Clay at
    Bobby McGee’s, a bar and restaurant. Rudi
    claimed to be an international banker.
    Annette gave him her phone number, and
    APELT V. RYAN                      7
    Rudi called her on Saturday. She met the
    Apelts at Bobby McGee’s that evening, and
    introduced them to her friends, Cindy and
    Kathy Monkman. Michael immediately
    focused on Cindy and spent the evening
    dancing and talking with her. He said several
    times “you’re the woman I want to marry”
    and “me you marry.” He and Rudi claimed to
    be computer and banking experts.
    During the next week Annette and Cindy saw
    the Apelts several times. When Cindy noticed
    that after the Apelts visited her apartment she
    was missing over $100 in cash, she and
    Annette began to get suspicious. They
    questioned whether the Apelts were actually
    staying at the Holiday Inn and, by calling
    several hotels in the area, discovered that the
    Apelts were registered at the Motel 6.
    When confronted with this information, the
    Apelts insisted that there was some mistake.
    That evening, after dropping the Apelts at the
    Holiday Inn, the women located their room at
    the Motel 6 and discovered Anke Dorn.
    The next day, the Apelts were furious and
    claimed that the women’s snooping destroyed
    their “high security clearance” and cost them
    their jobs and their work visas. They
    explained that Anke was a family friend
    whose husband was in the hospital. The
    women were apologetic and suggested various
    ways they could help the Apelts get their jobs
    8                  APELT V. RYAN
    back or find new jobs, but the Apelts refused
    these suggestions. Finally, in frustration,
    Annette exclaimed “what do you want us to
    do, marry you?” The Apelts replied, “yes.”
    Rudi moved into Annette’s apartment and
    Michael moved into Cindy’s.            Annette
    discussed with Rudi the possibility of a sham
    marriage so that he could work in the United
    States, but Rudi insisted that he loved her and
    that if they married it would be forever. He
    also insisted that they keep the marriage
    secret. Rudi had been staying with Annette
    less than a week when Annette discovered
    that the story regarding Anke was a lie.
    Annette asked Rudi to leave and did not see
    him again. Rudi and Anke moved into a
    motel. Thereafter, Michael told Annette
    several times that Rudi had returned to
    Germany. Cindy also believed that Rudi and
    Anke had left the country.
    On October 28, 1988, Cindy and Michael
    were married in Las Vegas. They did not tell
    anyone about the marriage. On November 7,
    at Michael’s suggestion, they consulted Doug
    Ramsey about a million dollar life insurance
    policy. Cindy believed Michael was wealthy
    and that purchasing large insurance policies
    was a customary investment practice for
    couples in Germany. Ramsey informed them
    that they could not get such a large policy but
    that they might qualify for a $400,000 policy.
    APELT V. RYAN                      9
    They filled out an application, and Cindy
    wrote a check for the first month’s premium.
    Around this time, and continuing up to the
    time of the murder, the Apelts and Anke
    began a series of shopping sprees. They
    looked at expensive Piaget and Rolex
    watches, at one time contracting to buy three
    for a total price of approximately $130,000.
    They looked at expensive boats and cars,
    arranging to buy two Jaguars for $144,000
    and two Toyota Supras for about $66,000.
    Their pattern was to fill out a purchase
    contract, make a nominal down-payment with
    assurances that they would pay cash upon
    receiving money from sources in Germany,
    and then never return. They drove to the
    stores and car dealers in Cindy’s Volkswagen.
    During one of the first shopping trips, Michael
    told Anke that if Cindy died an unnatural
    death, he would be rich. By this time they
    were without funds. Michael paid most of
    Rudi’s and Anke’s expenses with Cindy’s
    money, even though Cindy’s income from her
    two part-time jobs was very modest. She
    withdrew over $4,000 from an account from
    October through December 1988.
    On November 25, Ramsey informed Michael
    and Cindy that they could only get a $100,000
    life insurance policy. They executed a change
    form and, on November 30, applied for a
    $300,000 policy from another company.
    10                  APELT V. RYAN
    Early in December, Rudi and Anke reserved
    a rental car for December 9, specifically
    requesting one with a large trunk. Around
    this time, Ramsey informed Cindy that the
    second insurance company would not approve
    their application for a $300,000 policy until it
    had more background and financial
    information. Cindy provided the needed
    information, and Ramsey resubmitted the
    application. In the interim, Rudi cancelled the
    car reservation.
    On December 22, 1988, Ramsey informed
    Cindy and Michael that the $300,000 policy
    was approved and would be effective after
    Cindy gave him a check for the premium. He
    also delivered the $100,000 policy.
    On the morning of December 23, Cindy and
    Michael took the Volkswagen in for some
    repairs and rented a Subaru. Cindy was busy
    getting ready to leave the next day for Illinois
    with her sister Kathy. She made plans to meet
    her friend Annette for dinner at 8:00 p.m. to
    exchange gifts. She also planned to bring
    along Maria, a young woman she had been
    counseling.
    The Apelts also were busy. Michael took
    Rudi and Anke to a rental agency where they
    rented the car with the large trunk that they
    had originally reserved for December 9. Late
    in the afternoon, Michael returned to Rudi’s
    and Anke’s motel room. Michael told them
    APELT V. RYAN                      11
    that they could have a “lot of money” if he
    killed Cindy. They agreed to kill Cindy that
    evening. They made plans to meet in front of
    a German restaurant and proceed from there
    to the desert, where Cindy would be killed.
    Michael stated that he would bring Cindy and
    make sure she could not see where they were
    going.
    Cindy spoke with her father on the phone and
    then had a telephone conversation with Maria
    from 6:50 p.m. to 7:00 p.m. confirming that
    she and Michael would pick her up at
    7:45 p.m. Maria heard Michael arriving in the
    background.
    Anke and Rudi drove their rented car to the
    German restaurant at around 7:00 p.m. and
    waited. Michael drove by in the Subaru
    approximately 15 minutes later, but Anke did
    not see Cindy in the car. Anke and Rudi
    followed Michael on Main street toward a
    desert area where they had earlier practiced
    shooting a crossbow. Rudi turned off the road
    when he reached this location, but Michael
    continued on. Rudi drove around in the desert
    for a while before spotting Michael’s car. He
    drove toward it, stopped some distance away,
    and got out of the car after ordering Anke to
    remain. He returned to the car after about five
    minutes and both he and Michael drove to the
    motel where Anke and Rudi were staying.
    The brothers showered and changed clothes.
    12                 APELT V. RYAN
    The Apelts and Anke met at Bobby McGee’s
    at 10:30 p.m. and asked for a table for four.
    After waiting a while, ostensibly for
    Michael’s wife, they ordered dinner. Michael
    and Rudi discussed their alibi. They had
    several drinks after dinner in the lounge area
    and then went to another nightclub. Michael
    arrived home at around 2:00 a.m. on
    December 24th after leaving Rudi and Anke
    at their motel.
    There were many calls on the answering
    machine from Annette, Kathy, and Maria, all
    of whom were worried because Cindy failed
    to show up for dinner or call Kathy as
    planned. Annette called again and spoke with
    Michael, who told her that Cindy left the
    house at around 7:00 p.m. after receiving a
    phone call from an angry man. He claimed
    that she said she had to meet someone and
    would meet Michael at Bobby McGee’s at
    10:00 p.m. Annette came over to the
    apartment and called the police. She noticed
    that Cindy’s purse was still in the apartment.
    A police officer came and spoke with Michael
    and Annette. Michael told his story to the
    officer.
    Cindy’s body was found in the early afternoon
    of December 24th. She had been stabbed
    once in the lower chest and four times in the
    back. Her throat had been slashed so deeply
    that her head was nearly severed from her
    body. There were a tremendous number of
    APELT V. RYAN                      13
    bruises on her face and body. Police found a
    length of nylon cord and a blood soaked beach
    towel near her.
    There were many tire tracks in the area,
    although only two were clear enough to be of
    use. These were consistent with the tires on
    the car driven by Anke and Rudi. There was
    also a fairly good shoe impression near the
    body and a partial shoe print on the victim’s
    face as though the murderer had kicked or
    stepped on her head. These were later found
    to be consistent with a particular style of
    Reebok tennis shoes.
    Anke and Rudi were interviewed later that
    day and corroborated Michael’s story. They
    claimed they saw Cindy leaving the apartment
    at 7:00 p.m. as they were arriving, at which
    time she promised to meet them later at
    Bobby McGee’s. When questioned, Michael
    denied owning tennis shoes.
    Late on the evening of December 25, Rudi
    and Anke accompanied Michael as he drove
    the rented Subaru around the Salt River
    bottom. He drove erratically, making hard
    turns and slamming on the brakes in an effort
    to change the tread of the tires so they could
    not be linked to the murder scene. Two of the
    tires had to be replaced after the car was
    returned to the rental agency because they had
    flat spots caused by his driving.
    14                 APELT V. RYAN
    Michael borrowed some money, using the
    insurance policy as collateral, and the
    threesome flew to Illinois for Cindy’s funeral
    on December 31st. Although Michael cried at
    the funeral, Kathy saw him laughing and
    being jovial as he drove away after the
    service. That evening, Michael told Anke that
    Cindy had signed her own death warrant when
    she signed the insurance papers, but he
    regretted killing her.
    The Apelts and Anke returned to Phoenix on
    January 2nd. The next morning they flew to
    Los Angeles and paid a homeless man $20 to
    record the following message over the phone
    and onto Cindy’s answering machine:
    Hear what I have to talk. I
    have cut through the throat of
    your wife and I stabbed and
    more frequently in the
    stomach in the back with a
    knife. If I don’t get my stuff,
    your girlfriend is next and then
    your brother and last it is you.
    Do it now, if not, you see what
    happens.       My eyes are
    everywhere.
    They then returned to Phoenix. Michael
    contacted Detective Davis, a police officer
    who spoke fluent German, and asked him to
    translate the message. Detective Davis
    listened to the message over the phone and
    APELT V. RYAN                      15
    instructed the Apelts to bring the tape to the
    police station the next day.
    The police had discovered the insurance
    policy and identified Michael as a possible
    suspect in Cindy’s murder. The bogus taped
    threat confirmed their suspicions and, fearing
    that Anke or the Apelts might leave the
    country, the police arranged to have a
    surveillance team watch them on the night of
    January 5. Eleven officers were deployed
    around the apartment complex at 5:30 p.m.
    Shortly after 8:30 p.m. one of the officers
    knocked on the Apelt’s [sic] door to make
    sure they were home. When Michael
    answered the door, the officer asked for a
    fictitious person and was told he had the
    wrong apartment. Immediately after this, Rudi
    and Michael called the police and reported
    that three tall black men had just appeared at
    their door and threatened them.           The
    surveillance team was contacted, and they
    confirmed that this had not occurred.
    Detective Davis told the Apelts and Anke to
    come to the police station the next day to
    make composite sketches of their assailants.
    Accordingly, on January 6th, Anke and the
    Apelts went to the police station. The police
    spoke with Michael and Rudi individually and
    played along with them by preparing artist’s
    sketches. After leaving Anke in the lobby for
    a couple of hours, the police began
    interrogating her. They urged her to tell the
    16                 APELT V. RYAN
    truth. They threatened her with prosecution,
    promised her immunity in exchange for her
    confession, and showed her photographs of
    Cindy’s body in an appeal to her conscience.
    Anke confessed and the Apelts were arrested.
    On January 9th, the police searched Cindy’s
    apartment pursuant to a warrant. They seized
    a number of items, including the Apelts’
    shoes, the crossbow, and business cards that
    led the police to some of the jewelry stores
    and car dealerships that the Apelts visited on
    their shopping sprees. They also seized two
    rolls of film that contained pictures of
    Michael wearing tennis shoes with tread
    matching the footprint and impression left at
    the murder scene.
    While the brothers were in jail, Anke wrote to
    Rudi several times. These letters, which
    contained various incriminating statements
    reflecting Anke’s version of the events
    surrounding the murder, were seized pursuant
    to two search warrants.
    Michael sent Rudi a note in German that,
    translated, stated in part:
    I have a guy who is getting out
    in two-four days and then
    we’ll be free in one to two
    weeks. It won’t matter if the
    police have anything or not.
    We’re in jail and won't be able
    APELT V. RYAN                         17
    to have done that, so don’t do
    anything, okay!       Because
    when a woman is dead, the
    same thing will have
    happened, we’ll be free and
    I’ll have the money because
    the police won’t be able to do
    anything.
    The note was intercepted by a fellow inmate
    and turned over to the police. After the police
    interviewed this inmate, they obtained and
    executed a search warrant of Michael’s,
    Rudi’s, and adjoining cells. Police seized
    other communications between the brothers,
    several of which were introduced at trial.
    Michael and Rudi were tried separately. Anke
    was granted immunity from prosecution in
    exchange for her testimony at both trials.
    
    861 P.2d at
    638–42.
    B. The Trial and Sentencing
    Apelt was charged with first degree murder and
    conspiracy to commit first degree murder, and attorney
    Michael Villarreal was appointed to represent Apelt. Apelt
    was tried in April 1990, testified in his own defense, and was
    convicted of both murder and conspiracy to commit murder.
    Apelt, 
    861 P.2d 634
    .
    A presentence hearing was set for August 7, 1990. On
    June 8, Villarreal filed a motion for travel funds for him to go
    18                     APELT V. RYAN
    to Germany to investigate possible mitigating evidence. He
    told the court:
    Basically, Your Honor, what I need to do - -
    and I think the Court is aware my partner
    went to Germany at our expense last year, as
    far as travel, not the hours worked, and the
    reason for that trip was to contact - - basically,
    we are building up a character defense, and I
    was looking into some areas of my client
    having been in some type of psychological
    institution early in his life. We gathered - -
    we learned other information. We did not get
    any information we used at trial as far as good
    character witnesses or any rule - - we didn’t
    file any Rule 11 hearing nor anything of that
    sort based on what we learned over there at
    that time.
    However, Your Honor, I think it’s important
    and necessary that we travel at this time, that
    I travel this time to Germany to locate and
    contact witnesses there. Mr. Apelt has had his
    entire life in Germany except for the year and
    a half now that we know he was here in the
    United States, and there is also the issue of
    that psychological hospitalization that he
    under went, and I want to explore that area.
    Also, Your Honor, there are some other
    matters that came to light in his past regarding
    a difficult child birth, things of this sort that I
    need to check into, and I would ask
    permission to travel to Germany. I believe the
    airfare right now, going only on what I see in
    APELT V. RYAN                       19
    the newspaper, Your Honor, is somewhere
    around $800.00 round trip to Dusseldorf. I
    think that’s out of Los Angeles, I’m not sure.
    I also filed a companion motion for an
    interpreter. My partner, who went on that
    trip, found herself at a great disadvantage
    traveling in Germany. She, like myself, does
    not understand a word of German, and we
    thought family members would be able to
    interpret for us. It just didn’t work out. Their
    English wasn’t good enough. Other people
    who they thought might be able to help,
    friends and whatnot who would be able to
    help with interpreting weren’t available. I
    understand they have their own lives to lead,
    have their own jobs and whatnot. So if I do
    go, Your Honor, I am going to need an
    interpreter. I need someone so there is no
    problem, no delay and I can understand and I
    can make myself understood to the people I
    am talking to. I am going on that $50.00
    based on what our interpreter believes she
    believes is the going rate over there. I don’t
    know what it is, Your Honor.
    The prosecutor interjected that perhaps it would be more
    efficient and economical to hire an investigator in Germany.
    Villarreal responded:
    I do have leads on what I’m looking for, Your
    Honor. I’m not just going over there on a
    fishing expedition. I have also gone through
    the consulate here. I have learned through the
    20                  APELT V. RYAN
    consulate in Los Angeles that they are not
    going to be much help in this case. The
    German government’s position in these
    matters, and as I understand from the
    consulate and a Mr. Fisher I have spoken to in
    Los Angeles, they let the German citizen go
    through the entire process, all the way through
    to the ending of appeals, actually serving of
    the sentence or in this case if my client were
    to receive the death penalty, the possibility of
    the impending death penalty. At that point the
    German government would take a position.
    They do have apparently a very strong anti-
    death penalty position in their country,
    because they don’t have the death penalty in
    their country and they don’t like it when other
    countries impose the death penalty on their
    citizens, but my understanding is they keep
    their hands off and they let the other country
    take care of the crime and punishment, and
    then only at that point they take the position
    whether or not they will assist in anyway or
    whatever help the German government feels
    it needs to make. So I’ve gotten no help from
    the German government. I was hoping at the
    beginning of this case that they would be
    more cooperative. I believe Ms. Hughes
    mentioned a year or so ago when she went to
    Germany she didn’t get a whole lot of
    cooperation other than the police department
    was a little cooperative to some degree, but
    that was about it.
    APELT V. RYAN                             21
    The trial judge commented that “this has been a very
    expensive case to this point in time, and I am concerned about
    when it is the defendant has the right to have all these things
    furnished to him at no cost.” The judge noted that the costs
    had already exceeded $200,000.00. The court gave Villarreal
    a week to submit a statement, “a verification as to those items
    that you feel that your trip to Germany is a necessity for.”
    Villarreal did not submit such a statement. Instead, at the
    August 7, 1990 hearing, he sought a continuance and again
    argued that he needed to undertake an investigation in
    Germany.1 Arizona objected to a further continuance,
    arguing that the court had “indulged every whim of this
    defendant and his counsel in allowing him to present an
    adequate defense and fully investigate this case.” The
    prosecutor further noted that Villarreal had provided some
    documents that he acquired through a German lawyer and
    through Amnesty International. Villarreal denied that either
    the attorney or Amnesty International had been of any help.2
    1
    Citing a booklet by the Prisoners Defense Committee, and published
    by Washington and Lee School of Law, Villarreal listed the types of
    documentary evidence that he wanted to investigate (i.e., birth records,
    school records, mental health records), as well as the types of people he
    wanted to interview (i.e., relatives, teachers, employers).
    2
    Villarreal stated:
    [T]he attorney from Germany never contacted me.
    What he sent I never knew until it came to the
    newspaper, evidently the Phoenix Gazette, and then
    somehow it got to the prosecutor and who then sent it
    to me. That’s how I got those records. Amnesty
    International did not do anything in this case, except
    they were contacted by Mrs. Schmitt [Apelt’s mother]
    at the last minute regarding the instructions I had given
    22                            APELT V. RYAN
    The trial court denied Villarreal’s motion to continue, and
    proceeded with the presentencing hearing. The prosecutor
    indicated that she would rely on the testimony presented
    during the course of the trial and asserted three aggravating
    circumstances: (1) Apelt committed the crime for pecuniary
    gain; (2) the crime was heinous, cruel and depraved; and (3)
    Apelt procured the assistance of another by promise of
    payment.
    The court then asked Villarreal for whatever evidence he
    would proffer in mitigation. He offered eight exhibits that he
    had received the day before through fax and overnight mail.3
    her on the phone. They corrected her confusion. What
    they did is give her advice as to what to look for. She
    found the records. All they did was type the printed
    letters that had been sent to me. They typed them so it
    would be easy for me to read them or my interpreter to
    read the German, and then they faxed one set of
    records. They sent through overnight mail - - they sent
    it all to New York. One set they sent by overnight
    mail, the other set they faxed. They had no part in
    investigating this case or having anything to do with the
    case.
    3
    The district court described these documents as follows:
    1. A letter from Apelt’s brother disputing that Apelt
    could have been involved in the murder;
    2. A letter from one of Apelt’s friends stating Apelt
    had been a “good and honest friend”;
    3. A letter from Apelt’s uncle stating he had known
    Apelt since childhood and Apelt had been raised to
    “become [a] good human being[]”;
    4. A letter from Apelt’s mother stating in part, “Even
    APELT V. RYAN                            23
    After receiving the exhibits, which had just been translated
    into English the night before, the court took a recess to allow
    the prosecutor to review the documents.
    After the recess, the prosecution called Detective Ronald
    Davis as a rebuttal witness. Davis spoke German, had been
    involved in the investigation of Cindy’s murder, and had
    traveled to Germany to investigate Apelt. He testified that he
    spent an entire day with the Dusseldorf police who did not
    show him Apelt’s criminal record, but read the record to
    Davis.
    Villarreal objected to Davis’ testimony as unsubstantiated
    hearsay. The prosecutor responded that the letters submitted
    by Villarreal were in the nature of character references and
    Arizona was entitled to rebut them. The judge initially was
    dubious of Arizona’s position, but was persuaded by
    though my sons had contact with the law, they were
    never capable of such violence. I can just say as their
    mother, that they grew up normally.”;
    5. A letter from Apelt’s sister stating “my brothers are
    and were no angels but it takes a lot to commit such a
    brutal crime” and “I do not believe that my brothers are
    able to commit such a mine [sic] and brutal crime.”;
    6. A letter from a doctor stating Apelt “was treated for
    various illnesses” between August 1984 and July 1988;
    7. A letter from a past employer stating Apelt’s
    behavior from September 1984 to February 1987 was
    “unobjectionable”; and
    8. A certificate from the German military stating Apelt
    had served from 1982 to 1983.
    24                     APELT V. RYAN
    Arizona’s argument that the testimony was relevant to
    whether the life sentence for conspiracy should run
    consecutively or concurrently with the death penalty.
    Davis then testified that Apelt had a felony conviction and
    that Apelt’s former wife told him that Apelt had “been
    involved in some sort of attack involving a knife with a
    homosexual partner.” Davis reported that the former wife
    also stated that Apelt was quite capable of committing murder
    for money, and had asked her to donate one of her kidneys in
    order for him to get money.
    In her summation, the prosecutor, after noting the three
    aggravating factors, argued that there were no mitigating
    factors. She argued:
    There are none of the factors that are so
    frequently offered to avoid the death penalty,
    such as poor childhood. This defendant
    himself told the probation officer that he had
    a normal childhood. There is no evidence of
    any mental disease or defect such that might
    mitigate his crime and call for leniency. In
    fact, the medical records that were submitted
    to the Court, albeit they are probable records
    by people not qualified to give it, but his
    family doctor seems to indicate that there was
    no sign of any mental disease or defect.
    In response, Villarreal first questioned whether there was
    really evidence of intent for financial gain or that the crime
    was particularly cruel, heinous, and depraved. He then
    offered the following arguments in mitigation: (1) Apelt was
    only 25 years old at the time of the crime; (2) there is
    APELT V. RYAN                               25
    remorse; (3) he cooperated in the pre-sentence report; (4)
    Apelt has recently found Christ; (5) there is a lack of a prior
    record of any serious crime; (6) Apelt has an honorable
    military discharge; (7) Apelt displayed good behavior at trial;
    (8) Germany has a strong position against the death penalty;
    and (9) some of the victims favored a life sentence.4
    Villarreal also mentioned some of the areas of mitigation that
    he had not been able to pursue, such as Apelt’s capacity to
    appreciate wrongfulness of conduct, reports of
    “hospitalization in a clinic, some type of psychiatric clinic,
    emotional disturbance clinic of some sort in Germany,” and
    possible low intelligence and lack of education. But, because
    he could not travel to Germany, he was not able to obtain
    such information.
    On April 13, 1990, the trial judge imposed the death
    sentence. Villarreal continued to represent Apelt on his direct
    appeal.
    C. Initial Post-Conviction Proceedings
    Rudi was tried the week after Apelt and was sentenced
    and convicted of first degree murder. On May 28, 1991,
    Villarreal filed a post-conviction petition on behalf of Apelt.
    The petition was based on the testimony of a Dr. DiMaio in
    Rudi’s trial. The petition asserted:
    The Testimony of Dr. DiMaio was clearly that
    the murderer of Cynthia Apelt was right
    4
    Although Cindy’s parents asked the court to impose the death
    penalty, two of Cindy’s close friends stated that they did not want the
    death penalty, but wanted Apelt put away in prison where he can never get
    out.
    26                     APELT V. RYAN
    handed. Michael Apelt is left handed. The
    testimony of Dr. DiMaio would have added
    credibility to Michael Apelt’s testimony that
    he did not kill his wife. It would also have
    impeached the testimony of Anke Dorn that
    Michael Apelt killed his wife.
    The Superior Court of Pinal County denied the petition on
    May 28, 1991.         The Arizona Supreme Court then
    consolidated the denial of the first post-conviction petition
    with Apelt’s direct appeal.
    The Arizona Supreme Court affirmed Apelt’s conviction
    and sentence, rejecting a host of arguments advanced by
    Villarreal. Apelt, 
    861 P.2d 634
    . Of greatest concern in this
    federal habeas proceeding is the court’s treatment of Apelt’s
    challenges to his sentence. The court characterized the first
    challenge as whether “the trial court err[ed] by refusing to
    fund a trip to Germany so defense counsel could look for
    mitigating evidence.” 
    Id. at 642
    . The court determined that
    there was no error because a defendant must demonstrate how
    the requested assistance would be beneficial and why it is
    necessary for a fair trial, and Apelt had failed to make such a
    showing. 
    Id. at 651
    . The court noted that Villarreal failed to
    file a statement showing why the proposed trip to Germany
    was necessary, and that the adequacy of a showing is left to
    the discretion of the trial judge. 
    Id.
     The court commented
    that counsel did not explain why psychological
    hospitalization might be mitigating, or “why a difficult
    APELT V. RYAN                            27
    childhood and lack of education would be mitigating.”5 
    Id.
     It
    concluded that because Apelt “failed to show that helpful
    evidence was available in Germany,” he had no right to
    funding under the statute or the due process clause of the
    Fourteenth Amendment. 
    Id. at 652
    .
    The Arizona Supreme Court addressed two questions
    concerning the appropriateness of the death sentence: (1) did
    the court err in finding three aggravating factors; and (2) did
    the court err in “finding that there were no mitigating factors
    sufficient to outweigh the aggravating factors.” 
    Id. at 642
    .
    The court found that there was more than sufficient evidence
    to support each of the three aggravating elements. 
    Id.
     at
    652–53. It also found that the trial court had considered the
    “mitigating” factors proffered by counsel and had not
    imposed an impermissibly high burden or failed to weigh the
    factors properly. 
    Id. at 653
    . It independently reviewed the
    5
    The Arizona Supreme Court noted:
    Defendant’s claims that he had a difficult childhood and
    little education conflicted with his statements in the
    presentence report that his childhood was fairly normal
    and that he had the equivalent of a high school
    education. Likewise, we cannot conclude that the
    absence of records of the alleged psychological
    hospitalization prejudiced defendant. He did not even
    consult a psychiatrist to testify regarding his probable
    psychological condition at the time of the murder.
    Instead, he submitted a letter from a doctor in Germany
    who stated that he had treated defendant for various
    illnesses during the four years prior to the murder and
    observed no psychological problems during that time.
    Apelt, 
    861 P.2d at
    651–52.
    28                            APELT V. RYAN
    record and found three aggravating and no mitigating factors.6
    Id. at 654.
    As to the post-conviction petition, the court rejected
    Apelt’s request for an evidentiary hearing, finding that Dr.
    DiMaio’s testimony would not have changed the outcome of
    the trial because it made no difference whether Apelt or Rudi
    wielded the murder weapon. Id.
    D. Apelt’s Second Post-Conviction Proceedings
    On December 4, 1995, Apelt, now represented by new
    counsel, filed an “amended petition for post-conviction
    relief” in the Superior Court for the County of Pina (the
    amended petition is generally referred to as the “PCR”). The
    PCR raised ten issues, including assertions that Apelt was
    denied effective assistance of counsel during the penalty
    phase of his case, on direct appeal, and on his first post-
    conviction petition. Many of the assertions were based on
    newly discovered materials. The federal district court
    described the materials as follows:
    6
    The court stated:
    We have independently reviewed the record and agree
    that the defendant failed to prove any mitigating factors
    sufficient to call for leniency. He has failed to advance
    any credible argument as to why some factors should be
    considered mitigating at all. We note that it was in the
    defendant’s own best interest to cooperate with the pre-
    sentence report writer and behave well at trial.
    Apelt, 
    861 P.2d at 653
    .
    APELT V. RYAN                      29
    In support of these claims regarding
    Villareal’s performance, PCR counsel pointed
    out Villareal had been aware Apelt had been
    hospitalized in Germany but Villareal “failed
    to gather the records and background
    information necessary for a thorough and
    complete mental health evaluation.” Villareal
    had also “failed to investigate, develop, and
    present substantial mental health evidence”;
    failed “to identify, locate and investigate
    potential mitigation witnesses”; and “failed to
    properly develop or present adequately expert
    testimony.” PCR counsel further claimed
    Villareal had failed to present evidence that
    Apelt “came from a family background of
    gross poverty, alcoholism and violence which
    included emotional, physical and sexual
    abuse”; that Apelt “has a history of mental
    illness and has received psychiatric/
    psychotherapeutic treatment in Germany”;
    that Apelt “was in special education as a
    child,” “suffered from a nervous disorder,”
    and had attempted suicide “and that Apelt was
    mentally, physically, and sexually abused by
    older men throughout his childhood and
    mentally disturbed while in school.”
    These claims by PCR counsel were supported
    by “a plethora of documents from Germany
    obtained by . . . counsel through
    correspondence.” The documents submitted
    by PCR counsel included “a report on the
    situation of the Apelt family,” prepared by the
    Dusseldorf Industrial Welfare Organization.
    30                 APELT V. RYAN
    The report was based on information provided
    by Apelt’s mother and social worker who had
    worked with the family when Apelt was a
    child. The documents also included an
    affidavit from Apelt’s mother. The report and
    affidavit recounted what follows.
    Apelt’s father was an abusive alcoholic who
    beat his wife and children, including Apelt,
    with an iron rod. Apelt’s father sexually
    abused his wife and attempted to engage in
    sexual misconduct against his daughters. As
    a child, Apelt was sexually molested by older
    men on two occasions. The first time was
    when Apelt was seven. He was taken from
    his yard and driven to a house where he was
    forced to have intercourse. The second time
    was when Apelt was thirteen. Apelt had been
    walking home from school when he and a
    friend were tricked into going into a cellar
    where a man holding a knife forced Apelt to
    have intercourse. The incidents left Apelt
    “mentally disturbed.”
    Apelt’s family was very poor while he was
    growing up. The family of nine lived in a
    five-bedroom apartment and his father did not
    work on a regular basis. The family survived
    on government support and his mother’s
    earnings as a cleaning lady. The children
    were forced to go to work at age fourteen. All
    of the Apelt children “immediately after
    reaching emancipation, left home in order to
    APELT V. RYAN                               31
    escape the abusive, sexually abusive and
    violent situations.”
    Beyond the report from governmental agency
    and affidavit from Apelt’s mother, PCR
    counsel also submitted a medical report from
    the Psychosomatic Clinic in Dusseldorf where
    Apelt received in-patient treatment. That
    medical report was from 1986 and it described
    Apelt as suffering from “shortness of breath,
    vertigo, and pain in the left arm.” The report
    indicated that Apelt may have suffered
    medical complications during his birth. The
    report recounted that Apelt had attended
    special education because he spoke with a
    lisp.
    Attached to the PCR was an affidavit from attorney
    Villarreal.7 He stated that: (a) he “did not hire an investigator
    in Germany to investigate any mitigation”; (b) he “did not file
    a supplementary statement at the court’s request following
    the denial of funds by the court for the trip to Germany”; (c)
    “[a]ny lack of investigation or preparation during the penalty
    phase of this case was not a tactical or strategic decision”; (d)
    “Mr. Apelt did not take an active role in the development of
    mitigation”; and (e) he “did not withhold any objections,
    claims or defenses in order to gain a tactical or strategic
    advantage.”
    On January 23, 1996, Apelt filed a supplement to the PCR
    asserting that he was entitled to an evidentiary hearing (a)
    7
    Apelt’s first attorney spells his last name “Villarreal,” but it is
    sometimes spelled “Villareal” in the record.
    32                        APELT V. RYAN
    pursuant to Ake v. Oklahoma, 
    470 U.S. 68
     (1985), concerning
    his constitutional right to state-funded expert assistance, and
    (b) on whether his trial counsel was ineffective in failing to
    thoroughly investigate material aspects of his case.
    Arizona filed a comprehensive response to the PCR,
    setting forth a detailed account of Apelt’s actions leading up
    to the murder. It then argued that most of Apelt’s claims,
    including his IAC claims, are precluded under Arizona Rule
    of Criminal Procedure 32.2, which, in essence, provides that
    a defendant may not raise an issue that was not raised but
    could have been raised “at trial, on appeal, or in any previous
    collateral proceeding. The response also asserted that
    although Apelt’s claim of IAC by appellate counsel was not
    precluded, Apelt had not alleged any specific misdeeds that
    would overcome the deference due to counsel. The response
    also denied that Apelt had alleged any colorable claim of
    newly discovered material evidence.8             The evidence
    concerning Apelt’s background could not be newly
    discovered because it was within Apelt’s personal knowledge
    and was not diligently presented. Arizona further argued that
    Apelt cannot tie the evidence “to his cold-blooded
    commission of the murder, and none is ‘positive’ character
    mitigation—at most it seeks some sort of pity or sympathy,
    which [Apelt] is not entitled to have considered in
    mitigation.” The response also argued that there is no
    8
    Arizona argued that evidence that Anke Dorn lied in her testimony
    was basically irrelevant because while she may have sugar coated her
    involvement, the evidence overwhelmingly corroborates Apelt’s
    involvement, and, in any event, Anke was in Germany and not available
    to testify. As to Apelt’s claim that he wore a size 16 shoe and the shoe
    print at the scene was a smaller size, Arizona argued that this issue was
    fully litigated at the trial and Apelt had offered no newly, discovered
    evidence.
    APELT V. RYAN                        33
    possibility that the alleged newly discovered evidence would
    have changed Apelt’s sentence because Apelt exaggerates
    what is actually in the documents.
    Arizona also argued in the alternative that Apelt’s claims
    of IAC were meritless. Arizona asserted that, under
    Strickland, there is a strong presumption that counsel
    exercised reasonable professional judgment. Focusing on
    counsel’s performance at sentencing, Arizona first noted that
    Villarreal asked for funds to go to Germany but did not file a
    verified statement as requested by the trial court. The State
    argued that Villarreal did all he could, given the lack of any
    mitigation in Apelt’s background. It argued that Apelt and
    his attorneys “have had more than 5 years to cherry-pick
    through [Apelt’s] past and dredge up mitigation, yet have
    failed to present anything that would arguably warrant a
    sentence less than death.”
    On September 4, 1996, the Arizona Superior Court for
    Pinal County denied Apelt’s PCR. It held that most of the
    claims were precluded under Arizona’s Rules of Criminal
    Procedure either because they had been adjudicated on direct
    appeal or because they were not raised at trial, on appeal, or
    in Apelt’s first post-conviction petition. This included most
    of Apelt’s IAC contentions, except his claim of IAC in his
    first post-conviction petition, which the court held was not
    cognizable in the proceeding. Two of the court’s final three
    paragraphs are particularly relevant. The court held:
    The following claim is meritless because
    Petitioner fails to make a showing that
    counsel acted below objective standards of
    reasonableness in deciding what claims to
    raise on appeal and Petitioner fails to make a
    34                     APELT V. RYAN
    showing that the Arizona Supreme Court’s
    decision would have been any different:
    Claim 10 (ineffective assistance of counsel on
    direct appeal).
    ...
    Alternatively, the Court finds that Petitioner’s
    claim of ineffective assistance of counsel at
    trial and sentencing fails to allege colorable
    claims because Petitioner fails to make a
    sufficient preliminary showing that counsel’s
    performance fell below objective standards of
    reasonableness, and fails to make a
    preliminary showing that, in light of the
    allegations, there exists a reasonable
    probability that the result of the trial or
    sentencing hearing would have been different.
    Apelt filed a petition for review to the Arizona Supreme
    Court, which summarily denied review on April 23, 1998.
    E. Initial Proceedings in the District Court for
    Arizona
    Apelt filed his federal habeas petition in the United States
    District Court for the District of Arizona in May 1998.
    However, before the district court could resolve the petition,
    the Supreme Court decided Atkins, 
    536 U.S. 304
    , holding that
    the Eighth Amendment prohibits the execution of
    APELT V. RYAN                             35
    intellectually disabled persons.9 Based on the possibility that
    Atkins applied to Apelt, the district court stayed Apelt’s
    sentencing-related claims to permit him to return to state
    court and exhaust his Atkins claim. In the meantime, the
    district court considered and denied Apelt’s conviction-
    related claims.
    F. The Atkins Proceedings in State Court
    The superior court conducted an evidentiary hearing
    regarding the Atkins claims by both Apelt and his brother,
    Rudi, in April and May 2007. The superior court applied
    A.R.S. § 13-753(K)(3), which, at that time, defined
    intellectual disability as “a condition based on a mental
    deficit that involves significant subaverage general
    intellectual functioning, existing concurrently with significant
    impairment in adaptive behavior, where onset of the
    foregoing conditions occurred before the defendant reached
    the age of eighteen.” The superior court found that Apelt met
    none of the criteria:
    based on the three IQ scores and the accepted
    “margin of error for the tests administered,”
    the Court is confronted with the following
    ranges: 88 (German school), 56 to 66 (Ruff),
    32 to 62 (or 50 to 80) (Kury). Based upon the
    lack of evidence to support the marked
    decrease in IQ score, and the experts’
    opinions that the defendant was malingering,
    9
    When Atkins was decided, the term “mental retardation” was used
    to describe what is now called “intellectual disability.” See Hall v.
    Florida, 
    134 S. Ct. 1986
    , 1990 (2014) (“Previous opinions of this Court
    have employed the term ‘mental retardation.’”).
    36                     APELT V. RYAN
    the Court finds that the defendant has failed to
    establish by even a preponderance of the
    evidence that he suffers from significant
    subaverage intellectual functioning.
    As to the second criterion, adaptive behavior, the court
    rejected the assessment of Apelt’s expert, Dr. Ruff, as
    focused more on Apelt’s maladaptive behavior rather than his
    ability to perform daily tasks. Reviewing Apelt’s adulthood,
    the court noted that Apelt “has consistently displayed the
    ability to engage in independent and self-directed thinking,
    planning and conduct.” The court commented that Apelt had
    “worked at various jobs, at least one for an extended time,
    served in the military and was honorably discharged, married,
    and lived independently.” It further observed that Apelt had
    traveled to the United States and Mexico, and had learned
    English “sufficiently to communicate and interact
    appropriately with others, negotiated purchases of vehicles
    and apartment leases, understood foreign currency exchange
    rates, and obtained employment.” The court concluded that
    Apelt “ha[d] not proved by even a preponderance of the
    evidence that throughout his childhood and adult life he has
    suffered from significant impairment in adaptive behavior in
    meeting the standards of personal independence and social
    responsibility expected of a person of his age and cultural
    group.”
    Finally, the superior court concluded that Apelt had failed
    to prove by even a preponderance of the evidence the onset of
    subaverage intelligence prior to reaching the age of eighteen.
    In contrast, the superior court found that Rudi was
    intellectually disabled and vacated his death sentence. Rudi’s
    IQ was lower than Apelt’s IQ with test results ranging from
    APELT V. RYAN                         37
    49 to 61. The court also found that Rudi exhibited
    developmental disabilities from an early age, had been
    “unable to attain gainful employment or function on his
    own,” had been dismissed from military service after serving
    for less than a year, had never lived alone, and depended on
    Apelt to take care of him.
    G. The District Court’s September 1, 2015 Order
    Following the superior court’s denial of Apelt’s petition
    for post-conviction relief based on Atkins, Apelt was allowed
    to amend his federal habeas petition to raise an Atkins claim.
    On September 1, 2015, the district court issued its order
    granting Apelt relief on one issue and otherwise rejecting his
    claims. The district court addressed the issues relevant to this
    appeal in the following order.
    1. Procedural Status of Claims
    The district court recognized that a state prisoner must
    exhaust his remedies in state court before filing a federal
    habeas petition, and that, when a claim is procedurally
    defaulted under state law, a federal court usually cannot reach
    the merits of the claim. It reasoned that before 2012, a
    procedural default would be excused only if the petitioner
    demonstrated both cause and prejudice, but that Martinez v.
    Ryan, 
    566 U.S. 1
     (2012), set forth a new standard. Citing our
    opinion in Cook v. Ryan, 
    688 F.3d 598
    , 607 (9th Cir. 2012),
    the district court held that now a petitioner may overcome a
    procedural default “by demonstrating two things: (1) ‘counsel
    in the initial-review collateral proceeding, where the claim
    should have been raised, was ineffective under the standards
    of Strickland . . .’ and (2) ‘the underlying ineffective-
    assistance-of-trial-counsel claim is a substantial one, which
    38                        APELT V. RYAN
    is to say that the prisoner must demonstrate that the claim has
    some merit.’”
    Apelt asserted that his claims for IAC at sentencing
    (Claim 12), for failure to challenge his competency to stand
    trial (Claim 1-B), and for failure to challenge his competency
    at sentencing (Claim 1-D), are excused under Martinez by
    Villarreal’s ineffective performance on his first post-
    conviction petition. Arizona made a two-fold response. It
    argued that these claims were procedurally defaulted, but it
    also argued that if the court were to find Martinez applicable,
    the court would have to consider that the state court also
    denied the claims on their merits. Accordingly, if the court
    reached the merits, it should give deference to the state
    court’s ruling and not review the IAC claims de novo. The
    district court agreed that it had to “accept that the two claims
    were resolved by the state court on their merits and review
    their rejection under the deferential standard applicable to
    Apelt’s other claims.”10
    2. Claim 12 – IAC at Sentencing
    The district court recognized that Apelt’s IAC claim was
    governed by AEDPA and thus relief was only available if the
    state court’s decision was an unreasonable application of
    clearly established Federal law or an unreasonable
    determination of the facts. See 
    28 U.S.C. § 2254
    (d). The
    court acknowledged that relief was precluded as long as
    “‘fairminded jurists could disagree’ on the correctness of the
    state court’s decision,” Harrington v. Richter, 
    562 U.S. 86
    ,
    101 (2011), and that review was “limited to the record that
    10
    Apelt’s claim of incompetency at sentencing was not presented to
    the state court.
    APELT V. RYAN                               39
    was before the state court that adjudicated the claim on its
    merits.” Cullen v. Pinholster, 
    563 U.S. 170
    , 181 (2011).
    Accordingly, the record could be expanded only once a
    petitioner showed that there was no reasonable basis for the
    state court denial of relief.
    As Apelt alleged that Villarreal was ineffective because
    he failed to present classic mitigating evidence about his
    background and mental health, the district court stated that it
    had to determine “whether there is any reasonable argument
    that Villareal’s performance at sentencing met the well-
    established constitutional minimum for effective assistance
    of counsel.”
    The district court recognized that, under AEDPA, the
    Strickland standard was “doubly deferential.” Knowles v.
    Mirzayance, 
    556 U.S. 111
    , 123 (2009). Quoting Richter,
    
    562 U.S. at 105
    , the district court stated that “the question is
    not whether [Villarreal’s] actions were reasonable. The
    question is whether there is any reasonable argument that
    [Villarreal] satisfied Strickland’s deferential standard.” The
    court further held that only the evidence presented to the state
    court would be considered.11
    Turning to the substantive law, the district court stated
    that, in a capital case, counsel has an obligation to conduct a
    thorough investigation of the defendant’s background.
    11
    The district court held that, pursuant to Johnson v. Williams,
    
    568 U.S. 289
    , 297 n.1 (2013), it could consider evidence presented to the
    Arizona Supreme Court, even though that court summarily denied review.
    But it further commented that the “evidence presented only to the Arizona
    Supreme Court is of little weight,” and, thus, “the result would be the
    same even if the Court were to ignore that evidence.”
    40                     APELT V. RYAN
    Williams v. Taylor, 
    529 U.S. 362
    , 396 (2000). The court
    commented that although the exact contours of the obligation
    will vary, counsel “should obtain readily available
    documentary evidence such as school, employment, and
    medical records, and obtain information about the defendant’s
    character and background” (Robinson v. Schriro, 
    595 F.3d 1086
    , 1108–09 (9th Cir. 2010)); should make “inquiries into
    social background and evidence of family abuse” (Summerlin
    v. Schriro, 
    427 F.3d 623
    , 630 (9th Cir. 2005)); and should
    review such evidence of mental impairment as might be
    found in mental health records (Lambright v. Schriro,
    
    490 F.3d 1103
    , 1117 (9th Cir. 2007) (per curiam)). The court
    further noted that while an investigation typically begins with
    the defendant’s interview, it cannot end there unless the
    “defendant has given counsel reason to believe that pursuing
    certain investigations would be fruitless or even harmful.”
    Robinson, 
    595 F.3d at 1109
     (quoting Strickland, 466 U.S. at
    691).
    The district court concluded:
    Villareal clearly did not meet these
    responsibilities. Based on the state court
    record, Villareal did not collect records from
    social service agencies, welfare agencies,
    doctors, hospitals, or employers. Villareal did
    not interview potential mitigation witnesses,
    including Apelt’s family members, or consult
    with any mental health experts. Villareal did
    not obtain Apelt’s readily-available mental
    health records from the Pinal County jail
    which described Apelt receiving various
    medications as well as Apelt’s placement on
    suicide watch. And Villareal did not present
    APELT V. RYAN                        41
    a single witness at the sentencing hearing.
    This was deficient performance.
    The district court explained that, in reaching its
    conclusion, it had taken into consideration Villarreal’s
    statement that Apelt did not actively participate in the
    sentencing phase of trial. It found, however, that Apelt’s lack
    of cooperation did not eliminate Villarreal’s duty to
    investigate. See Hamilton v. Ayers, 
    583 F.3d 1100
    , 1118 (9th
    Cir. 2009); and Landrigan v. Schriro, 
    441 F.3d 638
     (9th Cir.
    2006) (en banc), rev’d, 
    550 U.S. 465
     (2007).
    The court acknowledged that Villarreal’s investigation
    was hampered by the need to obtain funding to travel to
    Germany, but concluded that his performance was
    nevertheless legally deficient. He failed to provide additional
    information to the trial court, as invited by the court, and
    offered no explanation for his failure. The court further noted
    that “[i]t is telling that PCR counsel obtained voluminous
    material regarding mitigation without traveling to Germany.”
    The district court also rejected Arizona’s suggestion that
    Villarreal’s conduct may have been strategic. It cited
    Wiggins v. Smith, 
    539 U.S. 510
    , 527 (2003), and noted that,
    because Villarreal “intended to seek information about
    Apelt’s mental health, including his hospitalization in
    Germany, . . . he knew it was material evidence and,
    inexplicably, failed to pursue it.” The court added that
    Villarreal “failed to present evidence of Apelt’s childhood
    poverty and abuse—humanizing information that would have
    been within the parameters of good character evidence,” and
    that Villarreal admitted that there was “no strategic basis for
    his failure to investigate or present more relevant mitigating
    42                     APELT V. RYAN
    evidence.” The district court concluded that “[n]o fairminded
    jurist could conclude Villareal’s performance was sufficient.”
    The court also found that the deficient performance was
    prejudicial: there was a reasonable probability that the result
    of the proceeding would have been different absent
    Villarreal’s deficient performance. See Strickland, 466 U.S.
    at 694. Villarreal’s “case in mitigation contained no evidence
    of Apelt’s alleged poverty, no evidence of childhood physical
    abuse, no evidence of repeated childhood sexual abuse, and
    no meaningful evidence of mental health problems.” Indeed,
    the prosecutor stressed that Apelt had a normal childhood,
    and Villarreal submitted a statement from Apelt’s mother that
    he had had a normal childhood. The court concluded that
    “the sentencing court was presented with a picture of Apelt’s
    background that bore ‘no relation’ to the picture presented by
    PCR counsel with apparently reliable evidence,” and the
    “magnitude of the difference between the mitigating evidence
    that was presented at sentencing and the evidence that could
    have been presented through competent investigation is
    sufficient to undermine confidence in the outcome.”
    Arizona filed a motion for reconsideration, arguing that
    (1) the court committed manifest error by applying Martinez
    to excuse the procedural default of Claim 12, and (2) the
    court “erred in its assessment of Strickland’s prejudice prong
    by failing to reweigh the totality of the mitigating evidence
    against the aggravating factors.” The district court rejected
    the second argument, holding that it had taken “into account
    the aggravating factors as well as the totality of the mitigating
    evidence.” The court explained its rejection of the first
    argument as follows:
    APELT V. RYAN                          43
    the Court did not apply Martinez to excuse the
    default but instead reviewed the state court’s
    alternative merits ruling. The Court noted
    Martinez, but only in the context of
    reassessing its earlier determination that
    Claim 12 was procedurally defaulted and
    barred from federal review. The Court
    concluded, citing Clabourne v. Ryan,
    
    745 F.3d 362
    , 382 (9th Cir. 2014), that the
    state court’s alternative merits ruling was
    subject to review under § 2254(d).
    In a footnote, the district court further noted that in Martinez,
    “the Arizona Attorney General’s Office argued on remand
    that the presence of an alternative merits ruling meant that
    alternative ruling had to be reviewed under a deferential
    standard.”
    3. Claims 1-B & 1-D (Mental Competence at Trial and
    Sentencing)
    Apelt asserted that he was “severely mentally ill and
    grossly overmedicated” when he was tried and that Villarreal
    was ineffective in failing to challenge his competence. The
    district court rejected this contention, noting that “co-counsel
    traveled to Germany, in part to investigate Apelt’s placement
    in a psychological institution” and did not find any evidence
    to support a motion to determine competency. Moreover,
    “the record does not support a finding that Apelt lacked a
    rational and factual understanding of the proceedings or the
    ability to consult with counsel.” Apelt was actively involved
    in his defense and the trial proceedings. In addition, his trial
    testimony revealed no traces of incompetence.
    44                     APELT V. RYAN
    Furthermore, the district court determined that the fact
    that Apelt was on medication did not mean that he was unable
    to consult with his lawyer and understand the proceedings.
    See United States v. Shan Wei Yu, 
    484 F.3d 979
    , 985 (8th Cir.
    2007). Also, the facts that he had been placed on suicide
    watch and had a history of mental health problems did not
    show that he was incompetent to stand trial. The court stated:
    “Apelt has failed to identify an instance in which he behaved
    irrationally, appeared not to understand the proceedings, or
    did not communicate effectively with Villarreal.” The district
    court concluded that Apelt had not met his burden of showing
    IAC in Villarreal’s failure to doubt his competency.
    4. Claim 11 (Denial of Funds to Travel to Germany)
    The district court reviewed the proceedings in the state
    courts and concluded that the denial of Villarreal’s request for
    funds to travel to Germany was not unreasonable. Despite
    being given an opportunity to supplement his request,
    Villarreal never offered any specific information to support
    his request. Thus, he did not make a “threshold showing”
    that the additional funds would be helpful. Williams v.
    Stewart, 
    441 F.3d 1030
    , 1054 (9th Cir. 2006) (per curiam).
    The court held that “[b]ecause Villareal offered only
    ‘undeveloped assertions’ in support of his request for funds
    to travel to Germany,” the Arizona Supreme Court did not
    unreasonably apply Caldwell v. Mississippi, 
    472 U.S. 320
    ,
    323 n.1 (1985), in denying this claim.
    5. Claim 17 (failure to consider certain mitigating
    evidence)
    Apelt argued that the Arizona Supreme Court erred by
    excluding from its consideration certain mitigating evidence
    APELT V. RYAN                            45
    in violation of Tennard v. Dretke, 
    542 U.S. 274
     (2004). The
    district court rejected this claim, finding that both the Arizona
    trial court and the Arizona Supreme Court considered all of
    Apelt’s proffered mitigating factors.12
    6. Claim 26 (intellectually disabled under Atkins)
    The district court first noted that under Arizona law Apelt
    bore the burden of proving intellectual disability by clear and
    convincing evidence (A.R.S. § 13-753(G)), and that under
    AEDPA, Apelt had to show that the state court’s decision was
    an unreasonable application of Atkins or was based on an
    unreasonable determination of the facts. Apelt focused on the
    state court’s analysis of the evidence presented in the Atkins
    proceedings, objecting to the determinations that he had
    failed to show he had a subaverage intellect and had not
    shown significant deficits in adaptive behavior.
    Although Apelt’s experts, Dr. Kury and Dr. Ruff,
    concluded that Apelt suffered from “Mild Mental
    12
    The district court commented:
    Apelt focuses on the court’s statement that Apelt
    “failed to advance any credible argument as to why
    some factors should be considered mitigating at all.”
    Apelt, 
    861 P.2d at
    653–54. But that statement did not
    refer to the entirety of Apelt’s mitigation evidence but
    rather to Apelt’s argument that certain circumstances—
    namely his cooperation with the presentence
    investigation, the plea bargain offered to Rudi, and
    Dorn’s immunity—were in fact mitigating at all. 
    Id.
    Again, there is no constitutional requirement that the
    sentencer assign proffered mitigating evidence any
    particular weight. See Harris [v. Alabama, 
    513 U.S. 504
    , 512 (1995)].
    46                     APELT V. RYAN
    Retardation,” and was intellectually disabled, the district
    court noted that Apelt had been tested as a child and found to
    have an overall IQ of 88. While the experts were skeptical
    about this test result, the district court noted that “the only
    specific challenge they offered was that Apelt would not have
    been placed in a special education school if his IQ had been
    that high.” The court found this “unpersuasive as a criticism
    of the test because no one contests that Apelt’s IQ was
    measured at 88 and, notwithstanding that result, he was in
    fact placed in a special education school.”
    Perhaps more important to the district court was the
    evidence of malingering: that Apelt sought to appear on the
    tests to be less intelligent than he is. Kury and Ruff
    administered eight separate IQ tests of Apelt and averaged
    them to arrive at a full-scale IQ score of 65, but the district
    court shared the state court’s concern that these scores were
    the result of Apelt’s malingering. The district court noted
    that Kury had detected “slight malingering” and that Ruff
    acknowledged it was possible Apelt malingered on some
    tests. Although Kury and Ruff doubted that the indications
    of malingering were strong enough to change their overall
    evaluations, they could not exclude the possibility that Apelt
    malingered or that all the testing data was reliable. The
    district court concluded that the state court had not clearly
    erred “by taking into account evidence of malingering in
    considering whether Apelt met his burden of establishing
    subaverage intelligence.”
    Although Apelt’s experts opined that he suffered from
    significant deficits in adaptive behavior, particularly
    social/interpersonal skills, financial responsibility, functional
    academics, and work, Dr. Moran, Arizona’s expert, thought
    “Apelt’s conduct was actually indicative of anti-social
    APELT V. RYAN                         47
    personality disorder.” The district court found that the state
    court was entitled to assess the relative credibility of the
    experts and that its decision to credit one qualified expert
    over the others was not enough to merit relief. The district
    court concluded that the state court did not clearly err when
    it found Apelt had failed to prove he met the adaptive
    behavior prong of intellectual disability and that the state
    court’s ruling on the Atkins issue was not based on an
    unreasonable determination of facts.
    7. Claim 27 (standard for proving intellectual disability)
    Finally, the district court rejected Apelt’s argument that
    Arizona had violated his right to due process and freedom
    from cruel and unusual punishment set forth in Cooper v.
    Oklahoma, 
    517 U.S. 348
     (1996), by requiring that he prove
    his intellectual disability. It noted that the Supreme Court in
    Atkins expressly permitted states to establish their own
    procedures for determining intellectual disability, and, thus,
    “there is no clearly established federal law setting a burden of
    proof in Atkins cases or extending Cooper to claims of
    intellectual disability.”
    The September 1, 2015 order concluded with the issuance
    of a certificate of appealability on two issues: denial of funds
    to travel to Germany, and the Atkins claim. The court also
    asked the parties to file supplemental briefs on whether an
    evidentiary hearing was necessary on IAC at sentencing.
    H. The District Court’s December 1, 2015 Order
    No party thought that an evidentiary hearing was
    necessary, but Arizona filed a motion for reconsideration,
    which the district court denied. In doing so, the court
    48                     APELT V. RYAN
    expanded on its reasons for granting relief. The court noted
    that Villarreal’s initial presentation of mitigation omitted
    evidence directly contradicting the assertion that Apelt’s
    childhood was normal. However, PCR counsel presented
    evidence “of extreme poverty, physical abuse, developmental
    delays, and mental health problems,” and these allegations of
    prejudice were strengthened by the record developed in the
    Claim 12 proceedings. The district court noted that: (1)
    Apelt’s father was cruel to his children and beat them; (2) the
    father sexually abused his children; (3) Apelt suffered
    extreme stress as a result of his father’s abuse; (4) Apelt’s
    childhood development was delayed and he had difficulty
    maintaining his hygiene and dressing appropriately; (5) Apelt
    attended a special school for learning disabled and mentally
    retarded children and left school when he reached ninth
    grade; (6) he had difficultly maintaining employment, even
    in unskilled labor; (7) Apelt was discharged from compulsory
    military service for “mental inadequacy”; and (8) Apelt was
    sent to a psychiatric institution after a suicide attempt. The
    district court reasoned:
    None of this evidence was presented at
    sentencing. As a result, the court was given a
    picture of Apelt’s background that bore “no
    relation” to the picture that could have been
    presented if sentencing counsel had performed
    competently. Rompilla v. Beard, 
    545 U.S. 374
    , 392–93 (2005). In circumstances like
    this, where such “classic” mitigation has been
    omitted, courts have consistently found
    ineffective assistance of counsel. Hamilton v.
    Ayers, 
    583 F.3d 1100
    , 1131 (9th Cir. 2009).
    APELT V. RYAN                         49
    The district court also rejected Arizona’s assertion that
    the three aggravating factors outweighed the totality of the
    mitigating evidence. It cited Correll v. Ryan, 
    539 F.3d 938
    ,
    951–52 (9th Cir. 2008), as holding that to establish prejudice
    under Strickland it is not necessary to show that the newly
    discovered mitigation evidence “would necessarily overcome
    the aggravating circumstances.” It noted that, although three
    aggravating factors were found, “under Arizona law the
    pecuniary gain and procuring factors are not both entitled to
    ‘full weight.’” In addition, the court observed that the Ninth
    Circuit in Stankewitz v. Woodford, 
    365 F.3d 706
    , 717–18 (9th
    Cir. 2004), recognized that the Supreme Court had made clear
    that the failure to present mitigating evidence could be
    prejudicial even when the defendant’s actions were egregious.
    The order concluded with the reiteration that “Villareal’s
    representation at sentencing was inadequate and prejudiced
    Apelt,” and that, had he “performed a competent mitigation
    investigation, there is a reasonable probability that Apelt
    would not have been sentenced to death.”
    II.
    The district court’s grant or denial of habeas relief is
    reviewed de novo. Moses v. Payne, 
    555 F.3d 742
    , 750 (9th
    Cir. 2009).
    A. The state court’s finding of procedural default
    must be considered, but does not preclude federal
    judicial review.
    As a threshold issue, Arizona asserts that the district court
    was barred from reaching the merits of Apelt’s IAC claims
    because these claims were procedurally barred under Arizona
    law, and Apelt cannot excuse his default under Martinez, 566
    50                     APELT V. RYAN
    U.S. 1. It appears that the district court may have
    misinterpreted our decision in Clabourne, 
    745 F.3d 362
    ,
    overruled on other grounds by McKinney v. Ryan, 
    813 F.3d 798
    , 818 (9th Cir. 2015) (en banc). Nonetheless, reviewing
    the district court’s comprehensive consideration of Apelt’s
    petition, we conclude that the district court implicitly
    determined that Apelt met the cause and prejudice standard
    set forth in Coleman v. Thompson, 
    501 U.S. 722
     (1991), and
    thus could address the merits of Apelt’s IAC claims.
    1. We review the state court’s procedural default ruling
    on its merits.
    The district court’s treatment of Martinez is not a model
    of clarity. Leading up to its consideration of Apelt’s claims
    on their merits, the district court wrote:
    The Ninth Circuit [in Clabourne] held that
    even assuming Martinez could excuse the
    procedural issue, the alternative merits ruling
    must still receive the normal deference
    applicable to state court rulings. . . .
    Given the holding in Clabourne, the fact the
    state court found Claims 1-B and 12
    procedurally improper does not mean that the
    Court can ignore the alternative merits ruling.
    Instead, the Court must accept that the two
    claims were resolved by the state court on
    their merits and review their rejection under
    the deferential standard applicable to Apelt’s
    other claims.
    APELT V. RYAN                              51
    The district court then addressed Apelt’s claims under the
    standard set forth in AEDPA, 
    28 U.S.C. § 2254
    (d). However,
    it did not explicitly address Arizona’s assertion that Apelt’s
    IAC claim was procedurally barred.13
    Nonetheless, the clear import of the district court’s
    language is that it was abiding by our direction in Clabourne
    to review the state court’s merits decision under AEDPA’s
    deferential standard. Following Martinez, if a state court had
    determined that a constitutional issue was procedurally
    defaulted, and the federal habeas court subsequently
    determined that the procedural default was excused, then the
    federal court would apply a de novo standard of review as
    there was no state court determination on the merits to which
    the federal court could defer. Our opinion in Clabourne
    clarified that when a state court “double-barrels” its
    decision—holding that a claim was procedurally barred and
    denying the claim on its merits—both its procedural default
    ruling and its merits ruling are entitled to deferential review
    by federal courts, as intended by AEDPA.
    Accordingly, the district court’s orders should not be
    construed as holding that, because the state court reached the
    merits of Apelt’s claim, the federal court can ignore the
    procedural default. In Zapata v. Vasquez, 
    788 F.3d 1106
    ,
    1111 (9th Cir. 2015), we reiterated that, where a state court
    expressly invokes a procedural bar, the claim is defaulted,
    even though the state court goes on to discuss the merits of
    13
    In its December 1, 2015 order, the district court denied that it had
    overlooked Arizona’s claim of procedural default, but had rejected it
    because Arizona had “not clearly explained how this Court could have
    committed error by following the sequence explicitly set forth by the
    Ninth Circuit in Clabourne.”
    52                         APELT V. RYAN
    the claim. See also Harris v. Reed, 
    489 U.S. 255
    , 264 n.10
    (1989).
    Here, the state trial court clearly held that the IAC claims
    were precluded under Arizona law before determining that
    Apelt had failed to show that counsel’s performance fell
    below objective standards of reasonableness and failed to
    show that there was a reasonable probability that the result of
    sentencing would have been different. Accordingly, we first
    consider whether Apelt’s IAC claim is procedurally barred.
    Martinez is properly understood as building on Coleman.
    Coleman set forth the requirement that, in order to obtain
    federal habeas relief, a state prisoner must establish cause to
    excuse a procedural default in state court, as well as
    prejudice. 
    501 U.S. at
    730–31. Martinez embraced the
    causation requirement, but held that a prisoner could establish
    causation by showing two things: (1) where he had counsel in
    the initial collateral review proceeding, that the attorney was
    ineffective under the standards of Strickland; and (2) “that the
    underlying ineffective-assistance-of-trial-counsel claim is a
    substantial one, which is to say that the prisoner must
    demonstrate that the claim has some merit.” Martinez,
    
    566 U.S. at 14
    . Indeed, the Supreme Court explained that,
    “[w]hen faced with the question whether there is cause for an
    apparent default, a State may answer that the ineffective-
    assistance-of-trial-counsel claim is insubstantial, . . . or that
    the attorney in the initial-review collateral proceeding did not
    perform below constitutional standards.” 
    Id.
     at 15–16.14
    14
    In Davila v. Davis, 
    137 S. Ct. 2058
     (2017), the Supreme Court
    reaffirmed that Martinez is best understood as qualifying Coleman. 
    Id. at 2065
    . Davila sought to extend Martinez to a claim of ineffective
    assistance of appellate counsel on direct appeal where his “postconviction
    APELT V. RYAN                               53
    Under Coleman and Martinez, the district court’s
    determinations—both that it could reach the merits of Apelt’s
    IAC claims and its evaluation of the merits of Apelt’s IAC
    claims—turn on three inquiries: (1) whether Villarreal, as
    Apelt’s counsel on his first PCR, was ineffective under
    Strickland; (2) whether Villarreal’s performance as counsel
    at sentencing was ineffective under Strickland; and (3)
    whether Apelt was prejudiced by Villarreal’s performances.
    2. Arizona’s contentions that Martinez and Coleman are
    inapplicable are not persuasive.
    Arizona advances two arguments for holding that the
    district court could not reach the merits of Apelt’s IAC
    claims. Arizona first argues that the purpose behind the
    exception recognized in Coleman and Martinez is a concern
    that no court will consider a state defendant’s constitutional
    claim of trial counsel IAC. It thus reasons that, because the
    trial court reached the merits of Apelt’s IAC claims, there is
    no need for the exception because one court did consider
    Apelt’s contentions on their merits.
    Although Arizona cites selected language from Martinez,
    we do not find its argument persuasive. Its proposed “one
    counsel provides ineffective assistance by failing to raise that claim.” 
    Id.
    Justice Thomas, writing for the majority, stressed the differences between
    trial error, where the defendant has a constitutional right to counsel, and
    appellate error, where there is no right to counsel. 
    Id. at 2067
    . Here,
    Apelt’s claim to a Martinez exception is based on ineffectiveness at the
    trial stage, and thus is not directly affected by Davila. Davila does not
    appear to change the requirement that, in order to successfully invoke the
    exception to procedural default, the defendant must show that his post-
    conviction counsel, in failing to address trial counsel’s ineffectiveness,
    was himself ineffective under the standards of Strickland.
    54                     APELT V. RYAN
    and done” approach, rather than narrowing federal habeas
    review, would bar federal review of constitutional issues. It
    contends that the fact that one state court had addressed the
    constitutional issues on the merits, blocks federal habeas
    review, regardless of the reasonableness of the state court’s
    decision. However, even if the fact that one state court had
    considered the constitutional claim were sufficient to
    distinguish Martinez, a petitioner, such as Apelt, would still
    be eligible to meet the cause and prejudice standard set forth
    in Coleman. There, the Court stated:
    In all cases in which a state prisoner has
    defaulted his federal claims in state court
    pursuant to an independent and adequate state
    procedural rule, federal habeas review of the
    claims is barred unless the prisoner can
    demonstrate cause for the default and actual
    prejudice as a result of the alleged violation of
    federal law, or demonstrate that failure to
    consider the claims will result in a
    fundamental miscarriage of justice.
    
    501 U.S. at 750
    . Thus, even if Apelt’s proceedings do not
    come within the coverage of Martinez, the procedural default
    might still be excused under Coleman.
    Second, Arizona asserts that because the state court
    denied Apelt’s PCR on the merits, Apelt cannot show that the
    failure to raise IAC claims in the first post-conviction petition
    was prejudicial. In other words, because the state court
    rejected the IAC claims on their merits in the PCR, it follows
    that there was no prejudice from the failure to raise the claims
    in the first post-conviction petition, and, thus, Apelt is not
    entitled to federal habeas review under Martinez.
    APELT V. RYAN                        55
    Again, Arizona’s argument seeks to place Apelt’s
    constitutional claim beyond even deferential review by a
    federal court. Certainly, the state court’s decision on the PCR
    is relevant to a determination of whether the failure to raise
    IAC claims in the first post-conviction petition was
    prejudicial. But that determination is not in itself a complete
    bar to federal habeas review—particularly where, as here, the
    state court’s merits ruling on the PCR is a conclusory
    alternate ruling.
    In sum, while the state court’s alternate ruling on the
    merits of the IAC claims does not allow a federal court to
    ignore the procedural default ruling, it also does not bar a
    federal court from applying Martinez and Coleman.
    3. Villarreal was ineffective as counsel on the post-
    conviction petition.
    In support of his assertion that Villarreal was ineffective
    as post-conviction counsel, Apelt asserts: (1) Villarreal was
    conflicted from raising his own ineffectiveness at sentencing;
    (2) Villarreal squandered Apelt’s opportunity for a thorough,
    well-investigated post-conviction petition when he
    prematurely filed a post-conviction petition; (3) Villarreal
    failed to comply with well-established professional norms
    that in 1989 required that counsel, in a capital case, be
    familiar with all state and federal post-judgment options,
    discuss them with his client, and conduct thorough
    investigations into all meritorious issues, particularly claims
    56                          APELT V. RYAN
    of IAC; and (4) the failure to investigate was not, and could
    not have been, the product of strategy.15
    Arizona responds that Apelt’s conflict-of-interest
    argument is foreclosed by Ortiz v. Stewart, 
    149 F.3d 923
     (9th
    Cir. 1998), and Bonin v. Calderon, 
    77 F.3d 1155
     (9th Cir.
    1996). However, these cases were decided before Martinez
    and were premised on the lack of a constitutional right to
    counsel in a habeas proceeding.16 At that time, a post-
    conviction lawyer’s negligence did not qualify as cause
    because the lawyer was considered the prisoner’s agent. See
    Lopez v. Ryan, 
    678 F.3d 1131
    , 1133 (9th Cir. 2012) (noting
    that Coleman “held that a PCR lawyer’s negligence does not
    qualify as cause, because the lawyer is the prisoner’s agent”).
    Martinez, however, recognized that “inadequate assistance of
    counsel at initial-review collateral proceedings may establish
    cause for a prisoner’s procedural default of a claim of
    ineffective assistance of counsel.” Lopez, 
    678 F.3d at 1133
    (quoting Martinez, 
    566 U.S. at 9
    ). Accordingly, Martinez
    overruled the premise of the rulings in Stewart and Bonin,
    giving life to conflict-of-interest assertions.
    15
    The district court, although finding that Villarreal had been
    ineffective, did not separately consider his performance as post-conviction
    counsel.
    16
    In Stewart, we held that the argument that an attorney “was
    prevented from raising his own ineffectiveness due to a clear conflict of
    interest” had been rejected in Nevius v. Sumner, 
    105 F.3d 453
    , 460 (9th
    Cir. 1996). Stewart, 
    149 F.3d at 933
    . In Nevius, we commented that the
    conflict of interest argument was “not without force,” but was foreclosed
    because Bonin, 
    77 F.3d at 1159
    , had held that “[t]here was no
    constitutional right of counsel in such habeas proceedings even if they
    presented the first opportunity to raise the ineffectiveness claim.” Nevius,
    
    105 F.3d at 460
    .
    APELT V. RYAN                          57
    We glean guidance from our opinion in United States v.
    Del Muro, 
    87 F.3d 1078
     (9th Cir. 2008). There, we
    commented:
    When Del Muro’s allegedly incompetent trial
    attorney was compelled to produce new
    evidence and examine witnesses to prove his
    services to the defendant were ineffective, he
    was burdened with a strong disincentive to
    engage in vigorous argument and
    examination, or to communicate candidly with
    his client. The conflict was not only actual,
    but likely to affect counsel’s performance.
    87 F.3d at 1080.
    A similar situation may exist where a defendant is
    represented on appeal by his trial attorney. The attorney may
    be torn between his duty to represent his client and a desire to
    defend the reasonableness of his performance at trial. Here,
    it is possible that Villarreal’s prompt filing of a post-
    conviction petition, based on the specialist’s testimony in
    Rudi’s trial, was partially fueled by a desire to avoid litigating
    his performance at sentencing.
    Arizona also argues that the court should defer to
    Villarreal’s decision to file a post-conviction petition while
    the direct appeal was pending and, that, even if doing so was
    “unusual,” this does not necessarily make it ineffective.
    Although other counsel could have chosen other routes,
    Arizona maintains that Villarreal’s choice fell well within the
    wide range of professional competence.
    58                     APELT V. RYAN
    On the record in this case, it is very difficult to justify
    Villarreal’s decision. His client had been found guilty of a
    horrendous murder and given the death penalty. Rather than
    take the time to investigate the case, as required by the
    applicable professional norms, he forfeited all other
    arguments that could be raised in a post-conviction petition,
    including IAC, to argue that Dr. DiMaio’s testimony, in
    Rudi’s trial, that Cindy’s murderer was right handed,
    exonerated Apelt, who is left handed. This was not
    objectively reasonable. There was overwhelming evidence
    that Apelt and Rudi committed the crime together, regardless
    of which one actually killed Cindy. Moreover, even if the
    argument had some potential for reducing Apelt’s sentence,
    there was no need or reason to rush filing the post-conviction
    petition before all the other possible issues had been
    researched. In sum, the record supports a determination that
    Apelt’s challenge to Villarreal’s performance as post-
    conviction counsel is “substantial.” Martinez, 
    566 U.S. at 14
    ;
    see also Miller-El v. Cockrell, 
    537 U.S. 322
    , 336 (2003)
    (holding that for a certificate of appealability to issue, a
    petitioner must show that reasonable jurists could debate
    whether the issue should have been resolved in a different
    manner or that the claim was “adequate to deserve
    encouragement”) (citation omitted).
    B. Villarreal was ineffective at sentencing.
    Having determined that Villareal’s performance on
    Apelt’s first post-conviction petition was sufficiently
    deficient as to provide cause for Apelt’s default, see
    Coleman, 
    501 U.S. at 750
    , we consider whether Villarreal’s
    performance as counsel at sentencing was ineffective under
    Strickland, 
    466 U.S. 668
    .
    APELT V. RYAN                        59
    Arizona objects to the district court’s determination of
    IAC asserting that the state courts’ rejection of these claims
    were neither contrary to, nor an unreasonable application of,
    clearly established federal law. In particular, Arizona argues
    that: (a) the alleged failure to adduce mitigating evidence is
    the same ilk as the errors in Strickland, Darden v.
    Wainwright, 
    477 U.S. 168
     (1986), and Burger v. Kenmp,
    
    483 U.S. 776
     (1987); (b) clearly established federal law refers
    only to Supreme Court holdings; and (c) the district court did
    not explain why the state court’s decision was contrary to
    Strickland.
    Some of Arizona’s arguments, however, are slightly off
    point because the essence of the district court’s determination
    was factual. Habeas relief was granted not for a failure to
    follow clearly established federal law, 
    28 U.S.C. § 2254
    (d)(1), but because, applying clearly established
    federal law, the determination that Villarreal was not
    ineffective under the standard of Strickland was “an
    unreasonable determination of the facts in light of the
    evidence presented in the State court proceeding.” 
    28 U.S.C. § 2254
    (d)(2).
    Nonetheless, Darden and Burger inform our decision in
    this matter. In Darden, IAC was only one of Darden’s
    claims. He argued that his trial attorneys “did not delve
    sufficiently into his background, and as a result were
    unprepared to present mitigating evidence at the sentencing
    hearing.” 
    477 U.S. at 184
    . In rejecting Darden’s claim, the
    Supreme Court noted that defense counsel had “engaged in
    extensive preparation prior to trial, in a manner that included
    preparation for sentencing.” 
    Id.
     Counsel expended hundreds
    of hours on Darden’s behalf, including “investigating
    petitioner’s alibi, and driving petitioner around the scene of
    60                          APELT V. RYAN
    events to establish each point of his story,” and “obtain[ing]
    a psychiatric report on petitioner, with an eye toward using it
    in mitigation during sentencing.” 
    Id. at 185
    .
    The Court further noted that there were several reasons
    why counsel could have reasonably chosen to rely on a
    simple plea for mercy. 
    Id. at 186
    . “Any attempt to portray
    petitioner as a nonviolent man would have opened the door
    for the State to rebut with evidence of petitioner’s prior
    convictions.” 
    Id.
     “In addition, if defense counsel had
    attempted to offer testimony that petitioner was incapable of
    committing the crimes at issue here, the State could have
    responded with a psychiatric report that indicated that
    petitioner ‘very well could have committed the crime.’” 
    Id.
    “[I]f defense counsel had attempted to put on evidence that
    petitioner was a family man, they would have been faced with
    his admission at trial that, although still married, he was
    spending the weekend furlough with a girlfriend.” 
    Id.
    Accordingly, the Court concluded that counsel’s decision,
    after consulting with Darden, not to use the psychiatric
    testimony was reasonable.
    In Burger, IAC was a secondary issue.17 Burger’s
    attorney had “offered no mitigating evidence at all.”
    
    483 U.S. at 788
    . However, the Supreme Court reviewed the
    counsel’s extensive investigation that led to the decision not
    to present mitigating evidence. 
    Id.
     at 789–91. The Court also
    noted that counsel had considered calling Burger’s mother
    and a lawyer who had acted as Burger’s big brother, but
    17
    The first issue was whether “the appointment of two partners to
    represent coindictees in their respective trials creates a possible conflict
    of interest that could prejudice either or both clients.” Burger, 
    483 U.S. at 783
    .
    APELT V. RYAN                        61
    concluded that “it was surely not unreasonable for [counsel]
    to have concluded that cross-examination might well have
    revealed matters of historical fact that would have harmed his
    client’s chances for a life sentence.” 
    Id. at 792
    . It further
    commented that “petitioner’s present counsel—even with the
    benefit of hindsight—has submitted no affidavit from that
    lawyer establishing that he would have offered substantial
    mitigating evidence if he had testified.” 
    Id. at 793
    . In sum,
    the Court, although troubled by counsel’s actions, concluded
    that Burger had not shown that his actions “were outside the
    wide range of professionally competent assistance.” 
    Id. at 795
     (citation omitted).
    Counsels’ efforts in Darden and Burger stand in contrast
    to Villarreal’s minimal efforts to investigate Apelt’s
    background. It is particularly noteworthy that defense
    counsel in those cases procured psychiatric reports on the
    defendants even though they ultimately decided not to present
    the reports at sentencing.
    Arizona also argues that the state court properly rejected
    Villarreal’s request for funds to travel to Germany and that
    Villarreal adequately investigated mitigation evidence.
    Arizona notes that Villarreal’s co-counsel traveled to
    Germany in hope of obtaining evidence of Apelt’s difficult
    childhood, and that Villarreal contacted the German consulate
    and Amnesty International.
    These arguments are not persuasive as they ignore the
    troubling information that Villarreal had and misstate some
    of the facts. The very fact that Villarreal’s co-counsel
    traveled to Germany and sought information as to Apelt’s
    “difficult childhood” suggests that Villarreal recognized the
    potential importance of such information. Moreover, co-
    62                        APELT V. RYAN
    counsel’s failure to procure the background information was
    not because it didn’t exist, but because Apelt’s family
    members didn’t speak English. Also, counsel knew, or
    should have known, that Apelt, while in jail, was prescribed
    a number of medications, was placed on suicide watch for
    five days, and was admitted to the Psychiatric Unit on at least
    one occasion. This information appears to be the type that
    would prompt counsel to obtain a psychiatric report on the
    defendant, as counsel did in Darden and Burger.
    Furthermore, the record refutes Arizona’s suggestions that
    Villarreal utilized Amnesty International and that the German
    consulate was of assistance.
    Moreover, Villarreal stated that his failure to investigate
    mitigation evidence was not a strategic choice, and that Apelt
    did not take an active part in the development of mitigating
    evidence. Indeed, it is difficult to imagine any rational basis
    for not investigating Apelt’s mental health and childhood.
    Apelt was facing the death penalty for committing a
    horrendous, cold-blooded murder. The documents that
    counsel had received the night before sentencing that
    allegedly attested to Apelt’s good character were unlikely to
    have any impact on the judge.18 Furthermore, these
    documents were more than offset by the testimony of
    Detective Davis, who spoke German, had traveled to
    Germany, and testified to Apelt’s criminal activity and poor
    character in Germany. The record shows that Villarreal was
    unprepared to respond to Detective Davis’s testimony.
    18
    Apelt was sentenced by a judge under the Arizona system that the
    Supreme Court later declared unconstitutional. See Ring v. Arizona,
    
    536 U.S. 584
    , 609 (2002). However, the Supreme Court subsequently
    held that Ring does not apply retroactively. See Schriro v. Summerlin,
    
    542 U.S. 348
    , 358 (2004).
    APELT V. RYAN                        63
    We do not have the benefit of the state courts’ reasons for
    rejecting Apelt’s IAC claim on his PCR. The state trial court
    offered only the conclusive statement that Apelt had failed
    “to make a sufficient preliminary showing that counsel’s
    performance fell below objective standards of
    reasonableness.” The Arizona Supreme Court summarily
    denied Apelt’s petition for review.
    Nonetheless, as required by Richter, 
    562 U.S. at 102
    , we
    consider “what arguments or theories supported or, as here,
    could have supported, the state court’s decision,” and “ask
    whether it is possible fairminded jurists could disagree that
    those arguments or theories are inconsistent with the holding
    in a prior decision of this Court.”
    Here, we determine that this record compels a finding that
    Villarreal’s performance at the capital hearing sentence “fell
    below an objective standard of reasonableness,” even in 1989.
    
    Id. at 104
     (quoting Strickland, 
    466 U.S. at 688
    ). There can be
    no doubt that counsel was required to review a defendant’s
    background in preparation for sentencing. Indeed, the record
    shows that Villarreal knew this but failed to take the steps
    necessary to do so. After all, Apelt had spent his whole life
    in Germany until he came to the United States some six
    months before committing the murder. The trial court’s
    reluctance to fund Villarreal’s requested travel to Germany
    simply does not excuse Villarreal’s failure to make the
    supplemental showing requested by the trial court, nor does
    it excuse his failure to consider other means of investigating
    Apelt’s mental health and background. He did not seek a
    psychiatric evaluation of Apelt despite the nature of the
    crime, Apelt’s treatment while incarcerated before trial, and
    other indicia of possible psychiatric issues. Accordingly, we
    64                      APELT V. RYAN
    agree with the district court that “[n]o fairminded jurist could
    conclude Villareal’s performance was sufficient.”
    C. The state courts’ determination that counsel’s
    inadequate representation of Apelt at sentencing
    was not prejudicial is not unreasonable.
    While we agree with the district court that Villarreal’s
    performance at sentencing was inadequate, we cannot find, as
    required by the Supreme Court, that the state courts’ finding
    of no prejudice was “objectively unreasonable.” Woodford
    v. Visciotti, 
    537 U.S. 19
    , 27 (2002).
    The Supreme Court stated in Richter:
    With respect to prejudice, a challenger must
    demonstrate “a reasonable probability that,
    but for counsel’s unprofessional errors, the
    result of the proceeding would have been
    different. A reasonable probability is a
    probability sufficient to undermine confidence
    in the outcome.” [Strickland, 466 U.S.] at
    694. It is not enough “to show that the errors
    had some conceivable effect on the outcome
    of the proceeding.” Id., at 693. Counsel’s
    errors must be “so serious as to deprive the
    defendant of a fair trial, a trial whose result is
    reliable.” Id., at 687.
    
    562 U.S. at 104
     (parallel cites omitted). The Court explained:
    In assessing prejudice under Strickland, the
    question is not whether a court can be certain
    counsel’s performance had no effect on the
    APELT V. RYAN                          65
    outcome or whether it is possible a reasonable
    doubt might have been established if counsel
    acted differently. See Wong v. Belmontes,
    
    558 U.S. 15
    , 27 (2009) (per curiam);
    Strickland, 
    466 U.S. at 693
    .           Instead,
    Strickland asks whether it is “reasonably
    likely” the result would have been different.
    
    Id., at 696
    . This does not require a showing
    that counsel’s actions “more likely than not
    altered the outcome,” but the difference
    between Strickland’s prejudice standard and a
    more-probable-than-not standard is slight and
    matters “only in the rarest case.” 
    Id., at 693, 697
    . The likelihood of a different result must
    be substantial, not just conceivable. 
    Id., at 693
    .
    
    562 U.S. at
    111–12 (parallel cites omitted).
    Critically, in a federal habeas petition where the petitioner
    is challenging counsel’s performance, the question “‘is not
    whether a federal court believes the state court’s
    determination’ under the Strickland standard ‘was incorrect
    but whether that determination was unreasonable—a
    substantially higher threshold.’” Knowles v. Mirzayance,
    
    556 U.S. 111
    , 123 (2009) (quoting Schriro v. Landrigan,
    
    550 U.S. 465
    , 473 (2007)). Thus, our review of the state
    court decision is “doubly deferential.” Pinholster, 
    563 U.S. at 190
     (quoting Knowles, 
    556 U.S. at 123
    ). Accordingly,
    “[w]hen § 2254(d) applies, the question is not whether
    counsel’s actions were reasonable. The question is whether
    there is any reasonable argument that counsel satisfied
    Strickland’s deferential standard.” Richter, 
    562 U.S. at 105
    .
    66                     APELT V. RYAN
    In addition, the Supreme Court directs that even “[w]here
    a state court’s decision is unaccompanied by an explanation,
    the habeas petitioner’s burden still must be met by showing
    there was no reasonable basis for the state court to deny
    relief.” 
    Id. at 98
    .
    In Andrews v. Davis, 
    866 F.3d 994
     (9th Cir. 2017), we
    read Supreme Court precedent as establishing three steps for
    applying Strickland to determine whether counsel’s deficient
    performance prejudiced the defendant at the penalty phase of
    a state capital case. 
    Id. at 1020
    . First, the court evaluates and
    weighs the totality of the available mitigating evidence;
    second, it evaluates and weighs “the aggravating evidence
    and any rebuttal evidence that could have been adduced by
    the government had the mitigating evidence been
    introduced”; and third, it reweighs “the evidence in
    aggravation against the totality of available mitigating
    evidence . . . to determine ‘whether there is a reasonable
    probability that, absent the errors, the sentencer . . . would
    have concluded that the balance of aggravating and mitigating
    circumstances did not warrant death.”               
    Id.
     (quoting
    Strickland, 
    466 U.S. at 695
    ). In Andrews, we reversed the
    district court’s grant of a writ because we found that the
    California Supreme Court’s determination that the denial of
    effective counsel was not prejudicial was not an unreasonable
    application of Strickland. Id. at 1033. We reach a similar
    conclusion in this case.
    Apelt clears the first hurdle as the proffered mitigating
    evidence paints a very different picture of Apelt’s background
    and character than was presented at sentencing. Apelt
    probably clears the second hurdle, mostly because there is
    little evidence in the record as to what rebuttal evidence
    Arizona might have produced in response to the mitigating
    APELT V. RYAN                              67
    evidence proffered in the PCR.19 However, Apelt fails to
    clear the third hurdle: he has not shown that, after reweighing
    the aggravating and mitigating evidence, there is a reasonable
    probability that, absent the errors, the sentencer would have
    concluded that the balance of aggravating and mitigating
    circumstances did not warrant death. Therefore he has not
    shown that the state courts’ determination of no prejudice is
    so unreasonable that no reasonable jurist could agree with it.
    Apelt cites cases such as Williams, 
    529 U.S. 362
    , Wiggins
    v. Smith, 
    539 U.S. 510
     (2003), and Stankewitz, 
    365 F.3d 706
    ,
    as showing that neither the brutality of the underlying murder,
    nor the defendant’s prior criminal acts, excuse counsel’s
    failure to investigate the defendant’s background. Apelt’s
    argument is fair, but overlooks a critical distinction. In all
    three of those cases, the murders were not planned: rather
    than being premeditated, the murders were the result of other
    motives, such as robbery and kidnaping.
    Here, Cindy’s murder was premeditated and calculated.
    The record shows that from the time Apelt entered the United
    States around Labor Day 1988, he lied to and manipulated
    others, and borrowed and stole money from women. He was
    intent on marrying a woman for her money. In less then a
    month he proposed to three different women. He convinced
    Cindy to secretly marry him in Las Vegas by leading her to
    believe that he was wealthy. A little over a week after the
    marriage, Apelt visited an insurance broker seeking to take
    out a million dollar insurance policy on Cindy’s life. As
    borne out by subsequent events, Apelt’s unwavering intent
    19
    However, there are indications in the record, such as Detective
    Davis’s testimony at trial, of evidence that would contradict the evidence
    Apelt proffered in support of his PCR.
    68                        APELT V. RYAN
    was to murder the woman he had convinced to marry him in
    order to collect on the insurance policy.
    When the insurance broker indicated that they could not
    obtain a million dollar policy, Apelt and Cindy filled out an
    application for a $400,000 policy. When the company did not
    accept the application for a $400,000 policy, Apelt agreed to
    take out two policies, one for $100,000 and another for
    $300,000. All of these applications were paid for by Cindy.
    In early December, Apelt told Anke that Cindy had a lot
    of insurance and that if she died an unnatural death, he would
    be rich. At about the same time, Anke and Rudi reserved a
    rental car with a good-sized trunk, but cancelled the
    reservation a couple of days later. On December 22, the
    insurance agent told Apelt and Cindy that the two insurance
    policies were in effect.20 The next day Rudi and Anke
    returned to the car rental agency and rented the car with a
    large trunk. Apelt told Rudi and Anke that they would have
    lots of money if they would “go out and kill Cindy.” That
    night Apelt drove Cindy out into the desert and he and Rudi
    murdered her.
    Apelt acted as if he had no involvement in Cindy’s
    murder. He pretended to wait for her for a late dinner at a
    restaurant, penned a fake note to Cindy to that effect, and
    cried in the presence of a police officer when Cindy’s sister
    reported that Cindy was missing. After Cindy’s body was
    discovered, Apelt continued to deny any knowledge of her
    20
    There is evidence in the record that Cindy was insistent that her
    father review the insurance policy and the insurance agent explained to
    Cindy and Apelt that Cindy had 10 days to talk the matter over with her
    father and rescind the insurance policies if she wanted to.
    APELT V. RYAN                         69
    death. He went to the insurance agent seeking assistance to
    obtain money so that he could attend Cindy’s funeral in
    Illinois, and eventually obtained a $2,000 loan, using the life
    insurance policy as collateral. Apelt flew to Illinois, attended
    the funeral, and broke down in tears when he tried to speak at
    the funeral.
    Meanwhile, Apelt continued to scheme in order to get
    away with murder. When, on December 28, he returned the
    rental car in which he had driven Cindy into the desert, the
    two front tires had multiple flat spots caused by aggressive
    harsh driving, thereby making it difficult to trace any tire
    pattern. On January 3, Apelt flew to Los Angeles and paid a
    homeless person to leave a message on Cindy’s answering
    machine. At trial, Apelt maintained his innocence and from
    jail attempted to get a note to Rudi instructing him on an
    alibi.
    Although he had opportunities to abandon his scheme,
    Apelt relentlessly pursued his scheme to murder the woman
    he professed to love and had married, and he involved his
    brother, Rudi, and Anke in the murder and the cover-up.
    Nothing in the record indicates that any explanation for why
    Apelt became a monster would have changed the sentence.
    This conclusion is all the more reasonable as none of the
    proffered mitigating evidence excuses Apelt’s callousness,
    nor does it reduce Apelt’s responsibility for planning and
    carrying out the murder. Indeed, presenting Apelt’s
    upbringing and activities in Germany to explain how Apelt
    became a calculating killer arguably could weigh in favor
    rather than against the death penalty. See Pinholster,
    
    563 U.S. at 201
     (noting that the “new evidence relating to
    Pinholster’s family—their more serious substance abuse,
    70                    APELT V. RYAN
    mental illness, and criminal problems . . . —is also by no
    means clearly mitigating, as the jury might have concluded
    that Pinholster was simply beyond rehabilitation”).
    In sum, even assuming that we might have looked more
    favorably on Apelt’s PCR than the state trial court, we cannot
    conclude that there is no reasonable argument that Apelt was
    not prejudiced. The evidence of Apelt’s depravity is
    overwhelming. At the age of 25, Apelt concocted and carried
    out a calculated plan to marry Cindy, to have her pay for her
    own life insurance, and then, as soon as the insurance
    premium was paid, to viciously and cruelly murder her.
    Furthermore, he persuaded his younger, intellectually-
    challenged brother to participate in the scheme and the actual
    murder. We cannot say that it would be unreasonable to
    conclude that further evidence as to how Apelt became such
    a monster would have had no effect on his sentence.
    Accordingly, we vacate the district court’s grant of the writ.
    D. Apelt has not shown that the state court’s denial of
    funding to investigate mitigation violated his
    constitutional rights.
    Apelt asserts that the trial court “eliminated any
    opportunity for an individualized sentencing and a
    presentation of mitigation” when it denied counsel funds for
    travel to Germany. He argues that this violated his rights
    under the Eighth and Fourteenth Amendments to
    individualized sentencing. See Ake v. Oklahoma, 
    470 U.S. 68
    , 77 (1985) (noting that “a criminal trial is fundamentally
    unfair if the State proceeds against an indigent defendant
    without making certain that he has access to the raw materials
    integral to the building of an effective defense”). Apelt
    claims that the Arizona Supreme Court’s determination that
    APELT V. RYAN                             71
    he had not made an adequate showing of need “was both an
    unreasonable application of and contrary to clearly
    established federal law.”
    We agree with the district court that, because Villarreal
    had offered only “undeveloped assertions” in support of his
    request for funds, the Arizona Supreme Court’s denial of
    relief was not unreasonable. In Caldwell v. Mississippi,
    
    472 U.S. 320
     (1985), the Supreme Court commented that,
    because the petitioner in that case offered little more than
    “undeveloped assertions that the requested assistance would
    be beneficial,” the denial of requests for a ballistics expert
    was not a denial of due process. 
    Id.
     at 323 n.1. In Williams
    v. Stewart, 
    441 F.3d 1030
     (9th Cir. 2006), we stated that the
    then “present rule is that an indigent defendant has a
    constitutional right to investigative services, but that such
    right comes into existence only when some need is
    demonstrated by the defendant.” 
    Id.
     at 1053–54 (quoting
    Smith v. Enomoto, 
    615 F.2d 1251
    , 1252 (9th Cir. 1980)).
    In light of this federal law, the Arizona Supreme Court’s
    denial of relief was not unreasonable. The court cited
    Caldwell and found that Apelt’s assertion of “prior
    psychiatric hospitalization, his difficult childhood, and his
    low education level,” were insufficient to compel funding.21
    21
    The court commented:
    [Apelt] did not explain why the hospitalization might be
    mitigating, and he refused the court’s invitation to make
    a more detailed showing.
    In support of his motion for continuance, defendant
    again failed to explain what evidence was available in
    Germany and how it would assist him. He did not offer
    72                          APELT V. RYAN
    Apelt, 
    861 P.2d at
    651–52. Perhaps, as Apelt asserts, today
    reasonable jurists would be compelled to conclude that the
    investigation of a capital defendant’s background and mental
    history is so fundamental to the presentation of an adequate
    defense that there is no need to demonstrate or explain why
    it might be relevant.22 However, based on the existing federal
    law in 1989, the Arizona Supreme Court’s decision—which
    was based on a record that by and large refuted the need for
    the proposed investigation—was not so outlandish that no
    reasonable jurists could agree with it. The district court’s
    denial of relief on Apelt’s challenge to the state courts’s
    any reason why a difficult childhood and lack of
    education would be mitigating.
    ...
    Not only did defendant fail to demonstrate reasonable
    necessity, but on appeal he fails to show how he was
    prejudiced. Defendant’s claims that he had a difficult
    childhood and little education conflicted with his
    statements in the presentence report that his childhood
    was fairly normal and that he had the equivalent of a
    high school education.
    Apelt, 
    861 P.2d at
    651–52.
    22
    This argument finds some support in the Supreme Court’s recent
    decision in McWilliams v. Dunn, 
    137 S. Ct. 1790
     (2017). In Justice
    Breyer’s opinion for five justices, the Court granted federal habeas relief
    on the ground that “Ake clearly established that a defendant must receive
    the assistance of a mental health expert who is sufficiently available to the
    defense and independent from the prosecution to effectively ‘assist in
    evaluation, preparation, and presentation of the defense.’” 
    Id.
     at
    1799–1800 (quoting Ake, 
    470 U.S. at 83
    ). However, this opinion does not
    help Apelt as the Arizona Supreme Court’s decision is evaluated on clear
    federal law as it existed in 1989.
    APELT V. RYAN                        73
    denial of funding to investigate mitigating evidence is
    affirmed.
    E. Apelt has not shown that he is entitled to relief
    under Atkins.
    1. Apelt’s Contentions
    Apelt bases his argument on the Supreme Court’s
    opinions in Atkins and Hall v. Florida, 
    134 S. Ct. 1986
    (2014), that “the Eighth Amendment bars the execution of
    people who are intellectually disabled according to current
    medical standards.” He accepts that the applicable Arizona
    statute, A.R.S. § 13-753(K)(3), defines intellectual disability
    as requiring a showing of (a) significant subaverage general
    intellectual functioning, (b) concurrent significant impairment
    in adaptive behavior, and (c) onset before the defendant
    reached the age of 18.
    Apelt argues that the evidence shows that he “suffers
    significantly subaverage intellectual functioning.” Dr. Ruff
    conducted a neuropsychological examination of Apelt in
    2000 and determined he had a full-scale IQ of 61, and Dr.
    Kury conducted his own examination in 2004 and found
    Apelt’s full-scale IQ to be 65. Apelt argues the only
    “evidence” that he had a higher IQ was the reported result of
    a test given Apelt in Germany when he was nine years old,
    which is unreliable because there is no evidence as to how it
    was administered.
    Apelt also challenges the state court’s determination that
    he was “malingering” and that accordingly the results of the
    tests administered in 2000 and 2004 are not accurate. Apelt
    argues that neither Dr. Ruff nor Dr. Kury opined that he was
    74                     APELT V. RYAN
    malingering during the test. Rather, they testified that, even
    if Apelt had attempted to malinger, their conclusions
    remained sound.
    Addressing the second prong of the intellectual disability
    test, Apelt argues that Drs. Ruff and Kury agreed that he
    suffers significant impairments in adaptive behavior, and that
    the state court disregarded this testimony in concluding that
    Apelt was “able to meet society’s expectations of him.” He
    argues the state court improperly relied on the Arizona
    Supreme Court’s opinion in State v. Grell, 
    135 P.3d 696
    (Ariz. 2006), insofar as that case “permits the state court to
    disregard evidence of adaptive behavior deficits.” Apelt
    argues that he demonstrated numerous deficits in adaptive
    behavior including the areas of “memory and orientation,
    managing money, home and transportation, health and safety,
    social adjustment, [and] functional academics.” He asserts
    that all three experts agreed he suffers major deficits in his
    adaptive behavior.
    In addition, Apelt challenges the state court’s reliance on
    his past employment, military discharge, and marriage. He
    asserts that he was only able to obtain unskilled work and
    never held a job for very long, his military discharge was due
    to “mental inadequacy,” and his marriage lasted for only two
    years during which time his wife abused him mentally and
    physically. Apelt notes that he never lived on his own.
    During his stay in the United States, he lived in a motel,
    where he was not required to prepare meals or perform
    housekeeping duties, or with Cindy upon whom he relied to
    help him obtain identification and the paperwork necessary to
    get a job at Olive Garden.
    APELT V. RYAN                                 75
    Apelt objects that the state court “improperly relied on the
    facts of the crime to support its conclusion that Mr. Apelt
    does not have the requisite adaptive behavior deficits to
    qualify for a diagnosis of intellectual disability.” He argues
    that the American Association on Intellectual and
    Development Disabilities does not permit the use of criminal
    behavior to assess adaptive behavior deficits. Moreover, he
    criticizes the state court for emphasizing his strengths
    because it is well-recognized that intellectually disabled
    people can possess strengths along with weaknesses. He
    similarly asserts that the state court “erred by placing too
    much emphasis on Mr. Apelt’s adaptive behavior as an adult
    and post-incarceration.”
    Finally, addressing the third prong of the test, Apelt notes
    that every expert “agreed the 88 score [on the test he took
    when he was a child] was erroneous and/or lacked the
    necessary foundation for professional consideration in the
    intellectual disability evaluation.” Thus, left with two
    reliable IQ scores of 61 and 65, the only reasonable inference
    is that Apelt’s limitation arose before he was 18, as reflected
    in his childhood behavior and assignment to a special school.
    2. Apelt has not met his burden of showing that the state
    court’s denial of his Atkins claim is an unreasonable
    determination of the facts in light of the evidence
    presented.
    To prevail on his Atkins claim, Apelt must meet all three
    prongs of the test for intellectual disability.23 State v.
    23
    Arizona’s arguments that we should not reach the merits of Apelt’s
    Atkins claim are not persuasive. We find that Apelt did adequately raise
    this claim in the district court, and that Apelt is not challenging the three-
    76                         APELT V. RYAN
    Boyston, 
    231 Ariz. 539
    , 543, 
    298 P.3d 887
    , 891 (2013). His
    experts tested Apelt and determined that his IQ was 61 or 65.
    The only evidence that he had a higher IQ was the result of a
    test administered in Germany when he was nine on which he
    scored an 88. But there is no evidence as to the reliability of
    the German test, and even Arizona’s expert, Dr. Moran,
    questioned the accuracy of this test. Furthermore, the
    placement of Apelt into an elementary school for
    intellectually disabled and learning disabled children is at
    least some evidence that the German school administrators
    recognized that Apelt was intellectually disabled, despite the
    88 score. Accordingly, the totality of the evidence would
    support the conclusion that Apelt had a “subaverage general
    intellectual functioning” before he reached the age of 18.
    However, Apelt’s Atkins claim fails because the record
    fairly supports the state courts’ determination that Apelt does
    not suffer from significant deficits in adaptive behavior.
    While Apelt focuses on his experts’ findings that he suffered
    major deficits in his adaptive behavior, Arizona’s expert, Dr.
    prong test set forth in A.R.S. § 13-753(K)(3). Rather, he focuses on the
    application of the test to the facts in his case.
    Arizona also suggests that there is some tension between 
    28 U.S.C. § 2254
    (d)(2) and § 2254(e)(1), with subsection (d)(2) requiring the
    petitioner to demonstrate “an unreasonable determination of the facts,”
    while subsection (e)(1) requires the petitioner to rebut “the presumption
    of correctness by clear and convincing evidence.” However, we need not
    address this tension. We agree with Arizona that, as was the situation in
    Murray v. Schriro, 
    745 F.3d 984
    , 1001 (9th Cir. 2014), the difference
    between the two standards of review is not determinative. Indeed, it is
    difficult to imagine a case in which a court would find that a state court
    decision was “an unreasonable determination of the facts,” but that the
    petitioner had not rebutted the “presumption of correctness by clear and
    convincing evidence.”
    APELT V. RYAN                        77
    Moran, disagreed, and the state court could credit one expert
    over another. More importantly, Apelt does not really
    address the strongest evidence of his adaptive behavior: the
    record of his activities in the United States. The state court
    commented:
    [Apelt] traveled to the United States and
    Mexico, learned to speak English sufficiently
    to communicate and interact appropriately
    with others, negotiated purchases of vehicles
    and apartment leases, understood foreign
    currency exchange rates, and obtained
    employment. After persuading the victim to
    marry him, he convinced her to buy a life
    insurance policy as part of his scheme to
    murder her for the proceeds. Knowing he
    would eventually be questioned by the police
    about his wife’s disappearance, he devised an
    explanation that she left the apartment that
    evening after receiving a telephone call,
    telling him she would meet him later at a
    restaurant, and established an alibi consistent
    with this story. He maintained this story
    consistently despite persistent police
    interrogation and again more than a year later
    at his trial.
    Indeed, Apelt’s activities in the United States reflect
    ingenuity, cleverness, and an ability to manipulate others.
    Accordingly, we cannot find that the state court’s
    determination was not supported by substantial evidence or
    is unreasonable. The district court’s denial of relief on
    Apelt’s Atkins claim is affirmed.
    78                     APELT V. RYAN
    F. Uncertified Issues
    As allowed by Ninth Circuit Local Rule 22-1(e), Apelt’s
    brief raised two uncertified claims for relief: (1) the Arizona
    Supreme Court applied an unconstitutional causal connection
    requirement to his mitigation evidence; and (2) counsel was
    ineffective at trial and sentencing for failing to challenge
    Apelt’s competency. Pursuant to Ninth Circuit Local Rule
    22-1(f), we asked Arizona to respond to the uncertified
    issues. Arizona did, and we hereby certify the issues for
    appeal, and deny Apelt’s claims on their merits. See Buck v.
    Davis, 
    137 S. Ct. 759
    , 773 (2017).
    1. Apelt’s claim that the Arizona Supreme Court applied
    an unconstitutional causal nexus requirement is not
    persuasive.
    Apelt asserts that, when reviewing his conviction and
    sentence, the Arizona Supreme Court applied an
    unconstitutional causal nexus requirement by: (a) stating that
    he “has failed to advance any credible argument as to why
    some factors should be considered mitigating at all”; (b)
    discounting the history of psychiatric hospitalization because
    he “did not explain why hospitalization might be mitigating”;
    and (c) rejecting his challenge to the lack of mitigation
    funding because he “did not offer any reason why a difficult
    childhood and lack of education would be mitigating.” Apelt,
    
    861 P.2d at 651
    , 653–54. Apelt argues that since Lockett v.
    Ohio, 
    438 U.S. 586
     (1978), the Supreme Court has defined
    mitigation as anything about a defendant’s character or record
    that the defendant proffers as a basis for a sentence less than
    death, and that in McKinney v. Ryan, 
    813 F.3d 798
    , 819 (9th
    Cir. 2015) (en banc), we held that the Arizona Supreme Court
    had acted contrary to Lockett and Eddings v. Oklahoma, 455
    APELT V. RYAN                           
    79 U.S. 104
     (1982), in imposing a causal nexus requirement
    when it independently reviewed death sentences.
    Specifically, Apelt argues that, although the Arizona
    Supreme Court did not cite State v. Ross, 
    886 P.2d 1354
    (Ariz. 1994)—which the Ninth Circuit disapproved of in
    McKinney—it did cite State v. Wallace, 
    773 P.2d 983
    , 986
    (Ariz. 1989), when it rejected his denial of resources claim.24
    Ross was not decided until after the Arizona Supreme Court
    issued its opinion in Apelt, but Wallace, which also used an
    unconstitutional causal nexus requirement, was decided four
    years prior to Apelt. Apelt contends that the reference to
    Wallace coupled with the Arizona Supreme Court’s
    conclusion that it found “no mitigating factors” demonstrates
    that the court followed the practice condemned in McKinney
    of disregarding certain mitigating factors. Finally, Apelt
    argues that even if the Arizona Supreme Court’s rejection of
    his mitigation is not based on a lack of causal nexus, it
    remains unconstitutional under Eddings and Lockett because
    the United States Supreme Court has held that a defendant’s
    good behavior is mitigating.
    24
    Apelt cites the following paragraph from the Arizona Supreme
    Court’s opinion:
    In support of his motion for continuance, defendant
    again failed to explain what evidence was available in
    Germany and how it would assist him. He did not offer
    any reason why a difficult childhood and lack of
    education would be mitigating. See State v. Wallace,
    
    160 Ariz. 424
    , 427, 
    773 P.2d 983
    , 986 (1989) (difficult
    family background not a mitigating factor absent a
    showing that it had something to do with the murder),
    cert. denied, 
    494 U.S. 1047
     (1990).
    Apelt, 
    861 P.2d at 651
     (parallel citations omitted).
    80                     APELT V. RYAN
    The district court, which addressed the causal nexus claim
    before we issued our en banc opinion in McKinney, denied
    Apelt relief. The district court found Apelt’s claim to be
    unsupported by the record. The district court noted that the
    trial court had expressly stated that it had considered all of
    Apelt’s proffered mitigation, and suggested that the trial
    court’s statement was “virtually dispositive of Apelt’s claim.”
    See Parker v. Dugger, 
    498 U.S. 308
    , 314–15 (1991). The
    district court continued:
    As for the Arizona Supreme Court, its
    independent review did not exclude Apelt’s
    mitigating evidence from consideration.
    Apelt focuses on the court’s statement that
    Apelt “failed to advance any credible
    argument as to why some factors should be
    considered mitigating at all.” Apelt, 
    861 P.2d at
    653–54. But that statement did not refer to
    the entirety of Apelt’s mitigation evidence but
    rather to Apelt’s argument that certain
    circumstances—namely his cooperation with
    the presentence investigation, the plea bargain
    offered to Rudi, and Dorn’s immunity—were
    in fact mitigating at all. 
    Id.
     Again, there is no
    constitutional requirement that the sentencer
    assign proffered mitigating evidence any
    particular weight. See Harris [v. Alabama],
    513 U.S. [504,] 512 [(1995)].
    In McKinney, we explained:
    Based on (1) the factual conclusion by the
    sentencing judge, which the Arizona Supreme
    Court accepted, that McKinney’s PTSD did
    APELT V. RYAN                       81
    not “in any way affect[ ] his conduct in this
    case,” (2) the Arizona Supreme Court’s
    additional factual conclusion that, if anything,
    McKinney’s PTSD would have influenced
    him not to commit the crimes, and (3) the
    Arizona Supreme Court’s recital of the causal
    nexus test for nonstatutory mitigation and its
    pin citation to the precise page in Ross where
    it had previously articulated that test, we
    conclude that the Arizona Supreme Court
    held, as a matter of law, that McKinney’s
    PTSD was not a nonstatutory mitigating
    factor, and that it therefore gave it no weight.
    This holding was contrary to Eddings.
    813 F.3d at 821. In addition, we held that an Eddings error
    was not structural error, and, therefore, McKinney had to
    show prejudice. Id. at 821–22.
    In Apelt’s case, the Arizona Supreme Court denied his
    claim, stating:
    We have independently reviewed the record
    and agree that the defendant failed to prove
    any mitigating factors sufficient to call for
    leniency. He has failed to advance any
    credible argument as to why some factors
    should be considered mitigating at all. We
    note that it was in the defendant’s own best
    interest to cooperate with the pre-sentence
    report writer and behave well at trial. We
    further note that, although the state considered
    offering Rudi a plea bargain, it did not do so
    and Rudi was in fact tried, convicted, and
    82                          APELT V. RYAN
    sentenced to death. Given the necessity of
    Anke’s testimony and her lesser involvement
    in the conspiracy and murder, her more
    lenient treatment is not a mitigating factor.
    See State v. Schurz, 
    176 Ariz. 465
    , 575,
    
    859 P.2d 156
    , 167 (1993).25
    
    861 P.2d at 653
    .
    None of the critical factors in McKinney are present in
    this case. In particular: (1) the trial court did not state a
    factual conclusion that any of Apelt’s proffered mitigation
    failed to affect his conduct; (2) the Arizona Supreme Court
    did not state a factual conclusion that any of Apelt’s proffered
    mitigation would have influenced him not to commit the
    crime; and (3) the Arizona Supreme Court did not cite Ross
    or Wallace when reviewing Apelt’s mitigation evidence.
    Moreover, Apelt’s claim that the Arizona courts applied
    an unconstitutional causal nexus requirement is subject to
    AEDPA, and, accordingly, the state court’s legal and factual
    determinations are entitled to deference. Apelt has not shown
    that the Arizona courts failed to follow established federal
    law because it appears that the Arizona Supreme Court did
    consider all the proffered mitigation evidence. We review
    state court decisions on the basis of established federal law as
    of the time of the state court’s decision. See Greene v.
    25
    The pin citation to Schurz is to a statement that the Arizona
    Supreme Court “has on occasion considered as a mitigating factor the
    disparity between the sentence of a defendant sentenced to death and a
    codefendant or accomplice sentenced to some term of imprisonment.
    Upon review of the cases, however, it is clear that it is not mere disparity
    between the two sentences that is significant, but, rather, unexplained
    disparity.” Schurz, 
    859 P.2d at 167
    .
    APELT V. RYAN                              83
    Fisher, 
    565 U.S. 34
    , 38 (2011). Apelt also has not shown that
    the Arizona Supreme Court’s determination is an
    unreasonable determination of the facts. Even if the Arizona
    Supreme Court’s opinion could be construed as implicitly
    applying a causal nexus standard—which we doubt—Apelt
    has not shown that reasonable jurists could not conclude
    otherwise. See Richter, 
    562 U.S. at 101
     (holding that federal
    habeas relief is precluded so long as fairminded jurists could
    disagree on the correctness of the state court decision).
    Finally, even if Apelt had a stronger argument that the
    Arizona Supreme Court applied an unconstitutional causal
    nexus requirement, he has failed to make the requisite
    showing of prejudice required for federal habeas relief. The
    Supreme Court in Eddings, 455 U.S. at 114–15, held that
    although the states could not exclude mitigating evidence
    from consideration, they were entitled to determine the
    weight to be given mitigating evidence. See also Greenway
    v. Ryan, 
    866 F.3d 1094
    , 1100 (9th Cir. 2017) (per curiam)
    (stating “even if we were to determine that the state court did
    apply the causal-nexus test in violation of Eddings, there
    could have been no prejudice because the aggravating factors
    overwhelmingly outweighed all the evidence that Greenway
    asserted as mitigating”). In light of the overwhelming
    evidence supporting the aggravating factors, a reasonable
    jurist could conclude that whatever weight was afforded the
    limited proffered mitigation evidence, it would not be
    sufficient to call for leniency.26 Apelt has not shown that he
    26
    As noted by the Arizona Supreme Court, at the time of its opinion,
    Apelt had proffered only limited mitigating evidence:
    [Apelt] offered his age [25] as a statutory mitigating
    factor and the following non-statutory mitigating
    84                         APELT V. RYAN
    is entitled to relief on his claim that the Arizona Supreme
    Court applied an unconstitutional causal nexus requirement,
    and the district court’s denial of relief on this claim is
    affirmed.
    2. Apelt’s contention that trial counsel was ineffective
    because he failed to challenge Apelt’s competency to
    be tried and sentenced is not persuasive.
    Apelt correctly notes that the constitution prohibits the
    trial of an intellectually disabled person, see Cooper v.
    Oklahoma, 
    517 U.S. 348
    , 356 (1996), and that to be
    competent to stand trial, a person must be able to consult with
    counsel with a reasonable degree of rational understanding.
    See Dusky v. United States, 
    362 U.S. 402
    , 402–03 (1960) (per
    curiam). Apelt further asserts that counsel is obligated to
    challenge his client’s competency when there is reason to
    believe that the client may be incompetent, and that Arizona
    Rule of Criminal Procedure 11 provides a mechanism to seek
    a competency evaluation.
    factors: (1) his remorse as evidenced by his statement
    to Anke after Cindy’s funeral that he regretted killing
    Cindy; (2) his cooperation with the presentence report
    writer; (3) his new-found religious faith; (4) his lack of
    a record of serious crime; (5) his honorable discharge
    from the army; (6) his good behavior at trial; (7) the
    request by Annette and Kathy contained in the pre-
    sentence report that he not be sentenced to death; (8)
    the fact that Germany does not have the death penalty;
    and (9) the fact that Anke was given immunity and
    Rudi Apelt was offered a plea bargain.
    Apelt, 
    861 P.2d at 653
    .
    APELT V. RYAN                              85
    Apelt contends that his counsel’s performance fell below
    the required standard under Strickland because Villarreal
    failed “to investigate or litigate Mr. Apelt’s competency to
    stand trial, despite the wealth of evidence demonstrating Mr.
    Apelt suffered from a serious psychiatric disorder, was
    suicidal prior to trial, and was being administered
    medications known to have a dramatic effect on a patient’s
    ability to interact with counsel and understand the
    proceedings.” Apelt points out that Dr. Fisher testified that
    the drugs Apelt was given during his pre-trial incarceration
    were “generally considered to possess significant central
    nervous system (CNS) depressant effects.” Apelt argues that
    because Villarreal knew, or should have known, of Apelt’s
    over-medication, hospitalization, and placement under suicide
    watch while awaiting trial, he was ineffective in failing to
    investigate Apelt’s competency to be tried and sentenced.
    Apelt further asserts that Villarreal had no strategy for not
    investigating Apelt’s competence, and thus his performance
    fell below the minimum professional standard set forth in
    Strickland.
    These claims of IAC are subject to AEDPA’s standard of
    review.27 The district court found that “the record contains no
    support for the proposition that Apelt was not competent to
    stand trial.” It notes that Villarreal did not neglect to consider
    Apelt’s competence. Rather, co-counsel traveled to Germany
    27
    Arizona argues that Apelt’s allegation that he was not competent to
    be sentenced, as contrasted to his claim that he was not competent to be
    tried, was not presented to the state courts, and accordingly, the federal
    courts are procedurally barred from considering the allegation. The
    district court, however, noted that Arizona had conceded that the claims
    shared the same factual nexus and considered the claims together. As a
    matter of judicial efficiency, we choose to consider the claims together
    and to deny them.
    86                           APELT V. RYAN
    before the trial but failed to find evidence that would support
    a motion to determine competency. Also, Apelt was actively
    involved in his defense and the trial proceedings. It appears
    that Apelt’s behavior at trial and his testimony gave no cause
    for Villarreal to doubt his competence.28
    In denying Apelt’s claim of lack of competence to stand
    trial, the district court recognized that Apelt had been
    prescribed powerful drugs prior to and during his trial, but
    held that this fact in itself did not render him incompetent and
    that there was no evidence “that the drugs did in fact affect
    his competence.” See Shan Wei Yu, 
    484 F.3d at 985
    . The
    district court similarly found that Apelt’s placement on
    suicide watch and his history of mental health problems were
    not sufficient to show he was incompetent, particularly as he
    “failed to identify an instance in which he behaved
    irrationally, appeared not to understand the proceedings, or
    did not communicate effectively with Villarreal.”
    Apelt’s claims turn not on whether he was, in fact,
    competent, but whether Villarreal was ineffective under the
    Strickland standard in failing to question Apelt’s competence.
    In a federal habeas proceeding, a state court ruling on IAC is
    entitled to double deference. Pinholster, 
    563 U.S. at 189
    .
    28
    The district court commented that Apelt: (a) “filed a pro per motion
    to change counsel” and complained that counsel failed to adequately
    communicate with him; (b) “authored jailhouse notes to his brother which
    indicated Apelt was keenly aware of the factual details of his case,
    including the evidence against him, and was rationally communicating
    with counsel about his defense”; (c) “notified Villarreal that certain jurors
    had observed him being escorted from the courtroom wearing shackles”;
    and (d) testified at length and in detail about his travels, the events leading
    to his marriage, and the purchase of the life insurance policy as an
    investment for their children.
    APELT V. RYAN                        87
    Our review of the record fails to disclose any incident or
    exchange that would have put Villarreal on notice that he
    should question Apelt’s competency to stand trial. Even if
    Villarreal should have, but failed to, pay attention to Apelt’s
    medication and treatment while incarcerated pending trial,
    this would not necessarily have raised questions of
    competency in light of Apelt’s active and coherent
    involvement in the proceedings. Because we find that Apelt
    has not shown that the state courts unreasonably denied his
    claim of incompetence to stand trial, we affirm the district
    court’s denial of relief on Apelt’s claims that he was
    incompetent to stand trial or be sentenced.
    IV.
    It has been 29 years since Apelt murdered his wife of less
    than two months. We have carefully reviewed the briefs and
    records in this case and conclude that Apelt’s federal habeas
    petition should be denied. We reject Arizona’s arguments
    that we lack jurisdiction to consider Apelt’s claim of
    ineffective assistance of counsel at sentencing, and we agree
    with the district court that Apelt was denied effective
    assistance of counsel at sentencing. However, we find that
    Apelt has failed to show that the state courts’ determination
    that counsel’s deficient performance was not prejudicial was
    unreasonable: there are reasonable arguments that the
    proffered additional mitigating evidence would not have
    changed Apelt’s sentence. Accordingly, the district court’s
    grant of the petition is vacated.
    We reject all of Apelt’s challenges to his conviction and
    sentence. He has not shown that, under the extant federal law
    at the time, the Arizona courts violated his constitutional
    rights by denying counsel funding to investigate mitigating
    88                     APELT V. RYAN
    evidence. See Caldwell, 
    472 U.S. at
    323 n.1; Williams,
    
    441 F.3d at 1054
    . He has not shown that he is entitled to
    relief under Atkins because the record fairly supports the state
    courts’ determination that he does not suffer from significant
    deficits in adaptive behavior. We have reviewed the Arizona
    Supreme Court’s opinion pursuant to our en banc opinion in
    McKinney, 
    813 F.3d 798
    , and conclude that the court did not
    impose an unconstitutional causal nexus requirement when it
    affirmed Apelt’s capital sentence. Finally, we conclude that
    Apelt has not shown that his counsel was ineffective in failing
    to question his competence to stand trial and be sentenced.
    The district court’s grant of the writ is vacated and
    Apelt’s federal habeas petition is denied.