United States v. Sheehan ( 2023 )


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  •           United States Court of Appeals
    For the First Circuit
    No. 21-1983
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    DEREK SHEEHAN,
    Defendant, Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. Richard G. Stearns, U.S. District Judge]
    Before
    Barron, Chief Judge,
    Selya and Lynch, Circuit Judges.
    Robert L. Sheketoff, with whom Sheketoff & O'Brien was on
    brief, for appellant.
    Donald C. Lockhart, Assistant United States Attorney, with
    whom Rachael S. Rollins, United States Attorney, was on brief, for
    appellee.
    June 8, 2023
    SELYA, Circuit Judge.             Defendant-appellant Derek Sheehan
    appeals both the district court's refusal to suppress the seizure
    of his cell phone and its refusal to suppress evidence of child
    pornography.       We conclude that the seizure of the cell phone was
    lawful,    but    that     the    warrant     authorizing      the   search      of   his
    electronic devices containing the child-pornography evidence was
    neither supported by probable cause nor within the good-faith
    exception to the warrant requirement.                  Accordingly, we affirm in
    part and reverse in part the district court's denial of Sheehan's
    motion to suppress, vacate both Sheehan's conviction and his
    conditional       guilty       plea,   and    remand    for    further       proceedings
    consistent with this opinion.
    I
    When reviewing the disposition of a motion to suppress,
    "[w]e rehearse the facts as supportably found by the district
    court," supplementing those facts (as may be necessary) "with
    uncontested facts drawn from the broader record."                     United States
    v. Adams, 
    971 F.3d 22
    , 28 (1st Cir. 2020).                    With this standard in
    mind, we first canvass the relevant facts and then trace the travel
    of the case.
    A
    On June 28, 2018, a woman reported to police in Norwell,
    Massachusetts, that Sheehan had sexually assaulted her younger
    brother,    who    was     a    friend   of       Sheehan's   son.       A   seven-week
    - 2 -
    investigation    followed,       during   which      state   and   local   police
    conducted a series of interviews with several children and their
    parents, all of whom were apparently acquainted with Sheehan and
    his family.
    From    those        interviews,     the    police   learned     of    an
    elaborate ruse through which Sheehan ostensibly had attempted to
    dispel or preempt any suspicions the other parents might have had
    that he was a pedophile.          In a series of interviews, the parents
    independently told a similar tale:             that Sheehan had earlier said
    that he had been the subject of a state police investigation after
    text messages between two children describing him as a pedophile
    had been unearthed by administrators at the children's school.
    According       to     the   parents,      Sheehan   said   that      the
    investigation had exonerated him.            In support, he showed them what
    purported to be both a state police file and an email exchange
    between him and the school resource officer. The parents described
    the supposed police file as being hundreds of pages in length and
    imprinted with the emblem of the Massachusetts State Police.                    But
    all of this was made up out of whole cloth:                  unbeknownst to the
    parents, Sheehan had never before been either the subject or the
    target of any such investigation.
    - 3 -
    Police officers also learned that Sheehan had created an
    "Apple ID" account for the child he had allegedly assaulted.1           By
    creating such an account, Sheehan was able to monitor that child's
    text messages, pictures, and videos.       Indeed, the police were told
    that Sheehan had used a desktop computer in his home to spy on
    that child's text messages. One of those messages, sent to another
    child in January of 2018, described Sheehan as a "literal child
    rpst [sic]."
    On August 1, 2018, police officers tried to interview
    Sheehan at his home.        Because he was not there at the time, they
    instead spoke to his wife.       She denied ever having seen the state
    police file described by the other parents.              Before leaving,
    though,   the    officers    informed   her   that   Sheehan   was   under
    investigation.
    On August 16, one of the parents called the Norwell
    police to report that Sheehan and his wife had spoken to her by
    telephone a few days earlier.      Their stated intention was to deter
    her from cooperating with the investigation.         They told her, among
    1 According to the affidavit submitted in support of the
    warrant to search Sheehan's home, the interview from which the
    police learned that Sheehan had created the Apple ID account
    occurred on August 17 (the day after the application for that
    warrant had been approved). It is unclear whether the date is a
    typographical error or whether the affidavit was somehow amended
    after the warrant issued.     In all events, Sheehan does not
    challenge the warrant itself.    Absent a better explanation, we
    assume — for argument's sake — that the date of the interview was
    recorded incorrectly.
    - 4 -
    other things, that the police were dissembling about Sheehan and
    could not be believed.        In that conversation, Sheehan also told
    the parent that she should inform the police that he had done
    nothing wrong.
    That evening, a Norwell police officer, Kayla Puricelli,
    applied   for    a   search    warrant.    The   application   expressly
    incorporated by reference an attached affidavit, which described
    the evidence gathered by the police during their interviews with
    the parents and children.       Additionally, the affidavit referred to
    evidence, obtained by state police, that Sheehan had created two
    email accounts.      He created one such account in the name of the
    school resource officer, and he created the other in the name of
    the child whom he had allegedly assaulted.
    Based on those facts, the affidavit stated that there
    was probable cause to believe that Sheehan had committed the crimes
    of identity fraud, unauthorized access to a computer, witness
    intimidation, and impersonation of a police officer.           See Mass.
    Gen. Laws ch. 266, §§ 37E, 120F, ch. 268, §§ 13B, 33.          To obtain
    additional evidence of those crimes, the affidavit (and thus the
    warrant   application)        sought   authorization   to   seize,   and
    subsequently search, any electronic devices found within Sheehan's
    home that could transmit or store digital data, including cell
    phones.   An assistant clerk of the Hingham District Court issued
    the warrant (with docket number 1858SW0035), which authorized the
    - 5 -
    search of Sheehan's house and person, but not the search of any
    other person within the home.
    The   following    morning   —   wielding   an   arrest   warrant
    separately obtained by the Massachusetts State Police — officers
    arrested Sheehan for indecent assault and battery of a child under
    the age of fourteen, see Mass. Gen. Laws ch. 265, § 13B, and
    witness intimidation, see id. ch. 268, § 13B.          The officers then
    searched Sheehan's home pursuant to the warrant obtained by Officer
    Puricelli, seizing myriad electronic devices in the process.2
    Sheehan's wife had his cell phone in her possession at
    the time of the search.     While his arrest was taking place, Sheehan
    asked his wife to call a lawyer.           That is when the arresting
    officers seized the phone: in Sheehan's words, one of the officers
    "grabbed [his] wife by the arm, twisted her arm[,] and removed the
    phone from her hand."3
    2  In addition, the police seized a tobacco container,
    electronic cigarette cartridges, and three unopened bottles of
    root beer. It is not immediately apparent why the police believed
    that those items were responsive to the warrant, which authorized
    only the seizure of computers and electronic devices capable of
    storing or transmitting digital data. But because that issue does
    not bear directly upon the current appeal, we do not probe the
    point more deeply.
    3 Sheehan's affidavit states that the search and arrest
    occurred on August 12.   But the affidavit was entered into the
    record when Sheehan moved for reconsideration of the district
    court's denial of his motion to suppress the fruits of the August
    17 search.   Given both the context in which the affidavit was
    offered and the record as a whole, it can safely be assumed that
    the affidavit describes the August 17 search.      The government
    - 6 -
    Shortly thereafter, state prosecutors moved to impound
    the search warrant because it contained information that could
    possibly identify juvenile victims of sexual assault.                On August
    20, a justice of the Hingham District Court granted the motion.
    On August 29, Officer Puricelli applied for a second
    search warrant, this time seeking to search the electronic devices
    seized from Sheehan's home for evidence of possession of child
    pornography.     See Mass. Gen. Laws ch. 272, § 29C.            Like the first
    warrant application, the second expressly incorporated an attached
    affidavit.       In that affidavit, Officer Puricelli stated that
    because she had submitted the affidavit "for the limited purpose
    of securing a search warrant," she had refrained from including
    "each    and     every   fact     known        to   [her]   concerning    th[e]
    investigation." Instead, the affidavit "set forth only those facts
    that [she] believe[d] [were] sufficient to establish the requisite
    probable cause for a search warrant."
    The affidavit then recounted, in pertinent part, that a
    seven-week police investigation had culminated in the issuance of
    an arrest warrant for Sheehan and a search warrant for his home
    (both of which were executed on August 17). The electronic devices
    seized   in    that   search    were   then     taken   into   custody   by   the
    Massachusetts State Police Computer Crimes Unit.               A state trooper
    asserts as much in its briefing, and Sheehan does not dispute the
    point.
    - 7 -
    from that unit notified Officer Puricelli that — while downloading
    digital evidence from Sheehan's phone — he had seen "pictures he
    believed to be child pornography."            According to the affidavit,
    "[t]he pictures consisted of images of prepubescent penises that
    lacked pubic hair."     Based solely on that description and the fact
    of Sheehan's arrest, the second application sought a warrant to
    search all devices seized from Sheehan's home for evidence of
    possession of child pornography.
    Other than stating that Sheehan had been arrested for
    indecent assault and battery on a child under the age of fourteen
    in   violation   of   Mass.   Gen.   Laws    ch.    265,   § 13B,   the   second
    affidavit neither provided details of the alleged assault nor
    recounted any facts drawn from the initial investigation.                 By the
    same token, the second application did not contain copies of any
    of the supposedly pornographic images.             And although the affidavit
    attached to the second application made clear that the devices to
    be searched had been seized pursuant to the first search warrant
    (which the second affidavit identified specifically by docket
    number), the second affidavit at no point expressly incorporated
    by reference the first search warrant, the application for that
    warrant, or the affidavit furnished in support of that application.
    Officer Puricelli did state in the second affidavit that
    she had "previously submitted the same application relative to
    [the electronic devices]," but she made pellucid that the prior
    - 8 -
    application had been "based on probable cause for other crimes."
    What is more, she stated that she had "not previously submitted
    the same application" as it related to the crime of possession of
    child pornography.           (Emphasis in original).        She also reiterated
    that distinction on the form for the second warrant application.
    An assistant clerk of the Hingham District Court — albeit
    not the assistant clerk who approved the first warrant — authorized
    the   search.         The    second   warrant    issued     with    docket      number
    1858SW0036.          The    ensuing   search    uncovered       videos   of    Sheehan
    sexually abusing a child on three separate occasions.                         Based on
    that evidence, he was charged in state court with several offenses,
    including three counts of aggravated rape of a child in violation
    of Mass. Gen. Laws ch. 265, § 22A.
    B
    Federal criminal charges followed.                    On September 19,
    2018, a criminal complaint was filed in the United States District
    Court for the District of Massachusetts, charging Sheehan with
    three counts of sexual exploitation of children.                     See 
    18 U.S.C. § 2251
    (a), (e).        On October 25, a federal grand jury returned an
    indictment      on    those     charges   and    added      a    child-pornography
    forfeiture allegation, see 
    id.
     § 2253.
    In due season, Sheehan moved to suppress the evidence
    obtained pursuant to both the first and second search warrants.
    As relevant here, he contended that the police exceeded the scope
    - 9 -
    of the first warrant by seizing his phone from his wife, given
    that the warrant did not authorize the search of anyone in the
    home (apart from Sheehan himself).            He also contended that the
    second warrant was unsupported by probable cause because the
    application for the warrant neither attached a copy of the image(s)
    to which the search was directed nor described the image(s) with
    sufficient detail such that a neutral magistrate could determine
    whether there was probable cause that the alleged object or objects
    of the search were pornographic.         See United States v. Brunette,
    
    256 F.3d 14
    , 17-19 (1st Cir. 2001).
    The district court was unconvinced.              As to Sheehan's
    phone, the court held that Sheehan lacked standing to contest the
    seizure of his phone from his wife's possession. See United States
    v. Sheehan, No. 18-10391, 
    2020 WL 429447
    , at *6 n.10 (D. Mass.
    Jan. 28, 2020).      So, too, it held that the description of the
    allegedly pornographic images contained in the second warrant
    affidavit was sufficiently detailed to establish probable cause
    that child pornography would be found on the devices.              See id. at
    *5.   Accordingly, the motion to suppress was denied.              See id. at
    *7.   Sheehan moved for reconsideration, but the district court
    summarily denied that motion.
    On July 20, 2021, Sheehan entered a conditional guilty
    plea, pursuant to a plea agreement, to all counts charged in the
    indictment.    See   Fed.   R.   Crim.   P.    11(a)(2).     His    plea   was
    - 10 -
    contingent upon the retention of his right to appeal the district
    court's denial of his motion to suppress.         On November 23, Sheehan
    was sentenced to serve a 540-month term of immurement. This timely
    appeal followed.
    II
    When reviewing a denial of a motion to suppress, we
    examine the district court's "factual findings for clear error and
    its   legal    conclusions,   including    its   ultimate   constitutional
    determinations, de novo."       United States v. Moss, 
    936 F.3d 52
    , 58
    (1st Cir. 2019).      We may uphold a suppression ruling on any ground
    made manifest in the record.        See id.; United States v. Ackies,
    
    918 F.3d 190
    , 197 (1st Cir. 2019).
    The Fourth Amendment provides that
    [t]he right of the people to be secure in their
    persons, houses, papers, and effects, against
    unreasonable searches and seizures, shall not
    be violated, and no Warrants shall issue, but
    upon probable cause, supported by Oath or
    affirmation, and particularly describing the
    place to be searched, and the persons or
    things to be seized.
    U.S. Const. amend. IV.        Sheehan contends, as he did below, that
    the evidence arrayed against him was obtained in violation of these
    safeguards both because the police exceeded the scope of the first
    search warrant and because the second search warrant was issued
    without a sufficient showing of probable cause.         We address these
    contentions in turn.
    - 11 -
    III
    We start with Sheehan's remonstrances concerning the
    seizure of his cell phone.   "Whether a search exceeds the scope of
    a search warrant is an issue we determine through an objective
    assessment of the circumstances surrounding the issuance of the
    warrant, the contents of the search warrant, and the circumstances
    of the search."   United States v. Pimentel, 
    26 F.4th 86
    , 92 (1st
    Cir. 2022) (quoting United States v. Hitchcock, 
    286 F.3d 1064
    ,
    1071 (9th Cir.), amended on other grounds, 
    298 F.3d 1021
     (9th Cir.
    2002)).   Here, the first search warrant unmistakably authorized
    the police to search Sheehan's residence and his person in order
    to seize any handheld digital devices or cell phones.   It did not,
    however, authorize the search of any other person.
    Sheehan contends that the seizure of his phone was the
    result of a warrantless search of his wife.       He points to no
    evidence to support this theory other than statements by the
    government before the district court that the phone had been "with"
    Sheehan's wife at the time of the search.     Sheehan asserts that
    such a statement is indicative of his wife having been searched by
    the police and that, at the very least, additional evidence should
    have been taken on the issue.
    The district court declined to address this issue on the
    merits. Instead, it held that Sheehan lacked standing to challenge
    the seizure of the phone from his wife's possession.    On appeal,
    - 12 -
    the government does not press the standing issue but, rather,
    invites us to affirm the district court's ruling on an alternative
    ground:   that no search of Sheehan's wife occurred and that the
    seizure of the phone was within the scope of the warrant.
    We   accept   the   government's   invitation   and   find    its
    arguments persuasive.    "A search within the meaning of the Fourth
    Amendment occurs whenever the government intrudes upon any place
    and in relation to any item in which a person has a reasonable
    expectation of privacy."      Moss, 936 F.3d at 58.    There is no such
    intrusion, though, when an object is simply held in one's hand and
    the officer on the scene can see that the held object is subject
    to seizure pursuant to the terms of a warrant.        See United States
    v. Corleto, 
    56 F.4th 169
    , 177-78 (1st Cir. 2022).
    This is such a case.     Sheehan points to no evidence that
    the phone was concealed on his wife's person.         Nor does he point
    to any evidence that the police patted her down or rummaged through
    her pockets to obtain it.       Rather — according to Sheehan's own
    account of events — the police pried the phone from her hand.          What
    Sheehan has described, then, is a seizure of personal property.
    See United States v. Jacobsen, 
    466 U.S. 109
    , 113 (1984) (defining
    a seizure of personal property as "some meaningful interference
    with an individual's possessory interests in that property").          The
    first search warrant authorized such a seizure, and Sheehan makes
    no argument that — to the extent his wife was not searched — the
    - 13 -
    seizure of the phone was not authorized by the warrant.                              We
    therefore uphold the seizure of the phone under the first search
    warrant.
    IV
    This brings us to Sheehan's argument that the second
    search warrant was unsupported by probable cause.                   A finding of
    probable    cause     "demands      proof   sufficient     to    support    a    fair
    probability that a crime has been committed and that evidence of
    that   crime     is   likely   to    be   found   within   the    objects       to   be
    searched."       United States v. Coombs, 
    857 F.3d 439
    , 446 (1st Cir.
    2017).     When assessing whether such a finding is justified, we
    look to the totality of the circumstances as they are set forth in
    the    warrant    application       and   its   accompanying     affidavit,          see
    Illinois v. Gates, 
    462 U.S. 213
    , 238 (1983), mindful that "[t]he
    probable cause standard 'is not a high bar,'" Adams, 971 F.3d at
    32 (quoting Kaley v. United States, 
    571 U.S. 320
    , 338 (2014)).
    That standard requires only "the kind of 'fair probability' on
    which 'reasonable and prudent [people,] not legal technicians,
    act.'"   Florida v. Harris, 
    568 U.S. 237
    , 244 (2013) (alteration in
    original) (quoting Gates, 
    462 U.S. at 238, 231
    ).
    Even so, "[s]ufficient information must be presented to
    the magistrate to allow that official to determine probable cause;
    his action cannot be a mere ratification of the bare conclusions
    of others."        Gates, 
    462 U.S. at 239
    .           Thus, in reviewing the
    - 14 -
    issuance of a warrant, we look to "ensure that the magistrate had
    a substantial basis for concluding that probable cause existed."
    United States v. Joubert, 
    778 F.3d 247
    , 252 (1st Cir. 2015)
    (quoting Gates, 
    462 U.S. at 238-39
    ).
    In the court below, Sheehan challenged the second search
    warrant on the ground that the second affidavit's description of
    the nude images as seen by the state trooper was not sufficiently
    specific to establish probable cause for possession of child
    pornography. The court rejected that challenge, and Sheehan renews
    it on appeal.
    A
    Sheehan's argument rests heavily on our decision in
    United States v. Brunette, in which we held that a law enforcement
    officer's assessment that images constituted child pornography
    could   not,   on   its   own,    support    a    finding    of   probable    cause
    sufficient to justify the issuance of a search warrant.                     See 
    256 F.3d at 16-19
    .       There, the affidavit submitted by the officer
    stated that images linked to the defendant depicted "a prepubescent
    boy lasciviously displaying his genitals" — a description that
    simply parroted the statutory definition of child pornography
    without providing any detail about the specific images in question.
    
    Id. at 17
     (quoting United States v. Brunette, 
    76 F. Supp. 2d 30
    ,
    37 (D. Me. 1999)); see 
    18 U.S.C. § 2256
    (2)(A)(v).                  We determined
    that    such   "conclusory       statutory       language"    could   not     alone
    - 15 -
    establish probable cause because it left the magistrate without
    sufficient facts from which to determine independently if the
    images constituted child pornography.                Brunette, 
    256 F.3d at 19
    .
    We also wrote, albeit in dictum, that "[a] judge cannot ordinarily
    make [a probable cause] determination without either a look at the
    allegedly pornographic images, or at least an assessment based on
    a detailed, factual description of them."               
    Id. at 18
    .
    Sheehan argues that the second affidavit's description
    of "pictures consist[ing] of images of prepubescent penises that
    lacked    pubic        hair"   is    equally     conclusory     and     therefore
    insufficient to ground a showing of probable cause. The government
    demurs, insisting that the affidavit's description of the images
    is far more specific than that offered in Brunette.
    As a threshold matter, our probable cause inquiry is
    shaped by the specific crime for which the police sought evidence.
    The second warrant authorized the search of Sheehan's devices for
    evidence of possession of child pornography as proscribed by state
    law — not federal law (as was the case in Brunette).              Compare Mass.
    Gen. Laws ch. 272, § 29C with 18 U.S.C. § 2252A.                      For present
    purposes, though, that is a distinction without a difference:
    although Massachusetts law defines child pornography as conveying
    a "lewd exhibition" of children (whereas federal law uses the term
    "lascivious exhibition"), the Massachusetts Supreme Judicial Court
    (SJC)    has    held    that   the   state     and   federal   definitions    are
    - 16 -
    synonymous.     See Commonwealth v. Rex, 
    11 N.E.3d 1060
    , 1069 n.14
    (Mass. 2014).     Thus, case law concerning the sufficiency of a
    probable cause showing for possession of child pornography under
    federal law may inform our analysis here.
    Against this backdrop, we hasten to add that child nudity
    alone does not make an image pornographic.      See United States v.
    Amirault, 
    173 F.3d 28
    , 33 (1st Cir. 1999); Rex, 11 N.E.3d at 1068.
    Instead, the images at issue must be "lewd" (or in the federal
    context "lascivious") in nature.        See Mass. Gen. Laws ch. 272,
    § 29C; 
    18 U.S.C. § 2256
    (2)(A)(v).       In making this determination,
    courts consider the following factors:
    1) whether the focal point of the visual
    depiction is on the child's genitalia or pubic
    area;
    2) whether the setting of the visual depiction
    is sexually suggestive, i.e., in a place or
    pose   generally   associated    with   sexual
    activity;
    3) whether the child is depicted in an
    unnatural pose, or in inappropriate attire,
    considering the age of the child;
    4) whether the child is fully or partially
    clothed, or nude;
    5) whether the visual depiction suggests
    sexual coyness or a willingness to engage in
    sexual activity; [and]
    6) whether the visual depiction is intended or
    designed to elicit a sexual response in the
    viewer.
    - 17 -
    Rex, 11 N.E.3d at 1069 (alteration in original) (quoting United
    States v. Dost, 
    636 F. Supp. 828
    , 832 (S.D. Cal. 1986)); see
    Amirault, 
    173 F.3d at 31-32
     (adopting Dost factors in review of
    sentencing enhancement); Brunette, 
    256 F.3d at 18
     (same in review
    of probable cause determination for warrant).4                    It follows that
    the second affidavit's description of the images on Sheehan's phone
    could only have established probable cause by providing enough
    detail for the magistrate to determine — in light of those factors
    — that the images seen by the state trooper were sufficiently
    "lewd," such that they were indicative of child pornography.
    We    hold    that   the    affidavit     failed   to   cross   this
    threshold.          Its cursory description that the trooper saw "images
    of prepubescent penises that lacked pubic hair" did little more
    than       signify    that   the    images   contained    child   nudity.      That
    description offered no detail as to the focus of the images, how
    the children were positioned in the images, or whether the images
    were sexually provocative in any other respect. See Rex, 22 N.E.3d
    at 1070-71. As was the case in Brunette, the affidavit here failed
    We caution that although we find these factors "generally
    4
    relevant" and useful for the guidance they provide, they are
    "neither comprehensive nor necessarily applicable in every
    situation."   Amirault, 
    173 F.3d at 32
    .   A determination of an
    image's lasciviousness "will always be case-specific." Id.; see
    United States v. Charriez-Rolón, 
    923 F.3d 45
    , 52-53 (1st Cir.
    2019).
    - 18 -
    to provide a "reasonably specific description" from which to assess
    probable cause.       Brunette, 
    256 F.3d at 19
    .
    The government asserts, unconvincingly, that the use of
    the phrase "consisted of" in the warrant application's explanation
    that "[t]he pictures consisted of images of prepubescent penises
    that lacked pubic hair" denoted a focus on child genitalia.                         This
    is whistling past the graveyard:                 the assertion that the images
    "consisted of" genitalia means only that the genitalia was a
    constituent    part    of    the    images.          See   3   The   Oxford      English
    Dictionary 772 (2d ed. 1989) (defining "consist of" as "to be made
    up   or   composed    of;    to    have    as    its   constituent        substance   or
    elements").    It says nothing as to the focus of the images.                         The
    affidavit's description of the images thus failed to make the
    necessary showing of lewdness needed to establish probable cause
    of possession of child pornography.
    B
    That     the    description         of   the   images    in    the   second
    affidavit — when viewed in isolation — failed to establish probable
    cause does not end our inquiry.                 After all, Brunette addressed a
    narrow circumstance         in which        the only proof offered to show
    probable cause was the description of the allegedly pornographic
    images.    See 
    256 F.3d at 17
    .        Where, as here, an affidavit contains
    additional facts probative of child pornography, we consider the
    otherwise deficient image description within a broader context to
    - 19 -
    determine whether the totality of the circumstances, as set forth
    in the affidavit, justifies a finding of probable cause.                              See
    United States v. Chiu, 
    36 F.4th 294
    , 298 (1st Cir. 2022).
    In that respect, federal law differs from Massachusetts
    law, which does not factor into the probable cause calculus "other
    ancillary evidence that may be suggestive of the defendant's state
    of mind," and instead focuses exclusively on evidence of "what is
    visually portrayed in the pictures themselves."                      Rex, 11 N.E.3d at
    1068 n.13.     Even so, evidence obtained by state officials while
    investigating a violation of state law is admissible in federal
    proceedings if it is obtained in conformity with the Constitution.
    See United States v. Syphers, 
    426 F.3d 461
    , 468-69 (1st Cir. 2005).
    Consequently,    we     must      evaluate       whether       the    second   warrant
    application and affidavit, taken as a whole, comported with the
    requirements    of     the     Fourth    Amendment         —    regardless     of     the
    requirements    imposed      by    state     law.      See       United    States      v.
    Sutherland, 
    929 F.2d 765
    , 769 (1st Cir. 1991).
    The issue, then, is whether those documents provided a
    sufficient     basis     from      which     a     neutral       magistrate         could
    independently determine if the images that were the object of the
    search were lewd in nature.              To that end, the second affidavit
    makes only a scant showing. In addition to the cursory description
    of the images seen by the state trooper, the affidavit states that
    after   a   seven-week       investigation,        Sheehan       was    arrested      for
    - 20 -
    indecent assault and battery of a child under the age of fourteen,
    that the police searched his home pursuant to a search warrant,
    and that the search yielded several electronic devices.            Refined
    to bare essence, the second affidavit offers only two unconnected
    data points relevant to the probable cause determination:             that
    Sheehan was arrested for indecent assault and battery of a child
    and that images of child nudity were seen on his phone.
    Such a meager showing cannot establish probable cause.
    It is true that "[p]robable cause does not require either certainty
    or an unusually high degree of assurance." United States v. Morel,
    
    922 F.3d 1
    , 11 (1st Cir. 2019) (quoting United States v. Clark,
    
    685 F.3d 72
    , 76 (1st Cir. 2012)).            Still, "[a]n affidavit must
    provide the magistrate with a substantial basis for determining
    the existence of probable cause."           Gates, 
    462 U.S. at 239
    .    The
    second affidavit provides almost no basis, never mind a substantial
    basis, from which the magistrate could infer that Sheehan's phone
    contained child pornography.        It does not supply any additional
    details   about    the   alleged    assault    or   Sheehan's   pedophilic
    tendencies.     It does not state that Sheehan used a computer as
    part of a ploy to prey upon children or that he recorded any of
    his assaults.     It does not even convey facts, or an opinion by the
    affiant-officer based on training and experience, to suggest that
    perpetrators of child sexual abuse frequently trade in child
    pornography.      The short of it is that nothing in the affidavit
    - 21 -
    would permit a magistrate to infer that the assault for which
    Sheehan was arrested increased (to the degree required by the
    probable cause standard) the likelihood that evidence of child
    pornography would be found on his phone.               Conjecture or hunch
    cannot fill this void.
    In each      previous case      in which    we have affirmed a
    magistrate's finding of probable cause for possession of child
    pornography, the challenged affidavit presented a far more robust
    factual showing from which to conclude that the images sought were
    child pornography.      See Chiu, 36 F.4th at 298-99 (finding probable
    cause when affidavit conveyed not only statements that defendant
    viewed child pornography, but also evidence of defendant's online
    behavior and his technical skill in surreptitiously obtaining
    child pornography over internet); United States v. Burdulis, 
    753 F.3d 255
    , 260-61 (1st Cir. 2014) (finding that defendant's email
    statements offering to send pornographic images to undercover
    officer   posing   as    a    minor    online,   as   well   as   defendant's
    transmission of nude image of himself to officer, established
    probable cause to search for child pornography). And we have ruled
    before that an allegation of child sexual assault does not provide
    probable cause to search a defendant's computer or electronic
    devices in the absence of facts connecting the assault to the
    devices in question.         See United States v. Cordero-Rosario, 
    786 F.3d 64
    , 70-71 (1st Cir. 2015) (holding that probable cause was
    - 22 -
    not    established       to     search      computer    for    evidence     of   child
    molestation when affidavit included nothing more than fact that
    defendant was under investigation for that crime and allegation of
    pornography        on   computer);       cf.   Joubert,       
    778 F.3d at 251-53
    (upholding search of electronic devices for evidence of child
    molestation when affidavit stated that defendant photographed and
    video-recorded his victims).
    None of this is to say that evidence of child molestation
    or    sexual    assault       cannot   in    some    instances      be   probative   of
    possession of child pornography.                    Such evidence may support a
    finding of probable cause when the assault is presented within a
    context that makes the possession of child pornography more likely.
    See Syphers, 
    426 F.3d at 466
     (considering in probable cause
    analysis     for    possession     of     child     pornography     allegation     that
    defendant photographed and fondled minor girls, sexually explicit
    pictures found in his home that featured minor girls, and evidence
    that    he   accessed     website        trafficking    in     pornographic      videos
    featuring the same).           But the affidavit must present that context
    and cannot rely on the magistrate to presume a connection between
    an assault charge and the possession of child pornography.                           See
    United States v. Falso, 
    544 F.3d 110
    , 120-22 (2d Cir. 2008)
    (holding that allegation that defendant attempted to access child
    pornography website, combined with prior conviction for child
    sexual abuse, was insufficient to show probable cause for search
    - 23 -
    when   no     association     between    those   two   facts   was    "stated    or
    supported"); see also United States v. Perkins, 
    850 F.3d 1109
    ,
    1119-21 (9th Cir. 2017).
    The bottom line is that a cursory description of images
    of child nudity, coupled with the unconnected fact that the
    defendant was charged with indecent assault and battery of a child,
    does not, without further elaboration and factual support, suffice
    to show probable cause of possession of child pornography.                      See
    United States v. Pavulak, 
    700 F.3d 651
    , 663 (3d Cir. 2012); United
    States v. Doyle, 
    650 F.3d 460
    , 472-74 (4th Cir. 2011).                     So it is
    here —      in the absence of          additional proof establishing some
    relation between those two facts, the magistrate was left without
    any substantial basis from which to infer probable cause.
    C
    The government strives to persuade us that we should
    expand the universe of facts available to the magistrate by
    considering      not   only   the     information   provided    in    the    second
    affidavit but also the "additional contextual and investigatory
    details" provided in the first affidavit.               We are not convinced.
    Following the government's lead would offend the rule that we must
    limit our assessment of probable cause to "information provided in
    the    four    corners   of     the     affidavit   supporting       the    warrant
    application."      Morel, 
    922 F.3d at
    12 n.10 (quoting United States
    v. Vigeant, 
    176 F.3d 565
    , 569 (1st Cir. 1999)).
    - 24 -
    The government tries to avoid this rule.               In its view,
    the second affidavit incorporated the first, such that the facts
    in the first affidavit "must be considered as well" in the probable
    cause determination.         As we explain below, this "incorporation"
    theory is woven entirely out of gossamer strands of speculation
    and surmise and — as such — does not withstand scrutiny.
    1
    To   begin,    the    government     suggests   that   Sheehan   has
    waived the right to argue against its incorporation theory.                   In
    advancing     this    suggestion,        the   government    submits   that   the
    district court held the first affidavit to be incorporated into
    the second affidavit and that Sheehan waived any right to contest
    that incorporation by failing to make the argument in his opening
    brief. We reject the government's characterization of the district
    court's order and, thus, reject its argument.
    The district court's order stated — in its survey of the
    facts   of    the    case   —     that    "Puricelli   did   not    specifically
    incorporate by reference her first affidavit."                Sheehan, 
    2020 WL 429447
    , at *2 n.3. Even so, the court stated that it was reasonable
    to infer "that the second [magistrate] would have been aware of
    the earlier warrant issued by his court" because Officer Puricelli
    had "four times listed the docket number of the first warrant" in
    the second affidavit; because she had "disclosed that the first
    application involved the seizure of the same items as named in the
    - 25 -
    second [application]"; and because "the second warrant was given
    the next successive docket number to the first."                       
    Id.
        It is
    unclear, though, how such an inference — even if drawn — could be
    said to come from within the four corners of the affidavit.                       And
    in any event, the district court upheld the second warrant based
    only on the second affidavit's description of the images, without
    reference to any facts gleaned from the first affidavit.                     See id.
    at   *5.    Consequently,    it   was       not    incumbent    upon    Sheehan   to
    challenge an incorporation theory that the government has teased
    from an off-hand, and ultimately superfluous, footnote in the
    district court's order.      Cf. United States v. Jurado-Nazario, 
    979 F.3d 60
    , 62 (1st Cir. 2020) (explaining that an argument is not
    waived when party "brought the issue to the court's attention 'at
    the earliest point when it was logical to do so'" (quoting Holmes
    v. Spencer, 
    685 F.3d 51
    , 66 (1st Cir. 2012))).
    2
    This   brings   us    to   the        merits   of   the    government's
    argument.     The government concedes that the incorporation it
    envisions was not done explicitly.            It nonetheless argues that the
    second affidavit implicitly incorporated the first for the reasons
    articulated by the district court:            that it referred to the first
    warrant by its docket number, that the electronic devices to be
    searched had been seized pursuant to that warrant, and that the
    second warrant issued with a docket number successive to the first.
    - 26 -
    From this concatenation of circumstances, we can assume, the
    government insists, that the assistant clerk who authorized the
    second warrant was aware of the facts contained in the first
    affidavit (even though the first affidavit was not part of the
    application for the second warrant).
    The case law that it offers in support of this theory
    cannot carry the weight that the government loads upon it.                As an
    initial matter, the line of cases cited by the government concerns
    whether     incorporated   materials       can   cure    defects     in    the
    particularity or breadth of a search warrant.            Those cases do not
    directly address the incorporation of materials into a warrant
    application.
    Notwithstanding that distinction, we are aware of no
    case — and the government has identified none — holding that the
    mere mention of a document external to an affidavit (by docket
    number or otherwise) implicitly incorporates the contents of that
    document.    Although the government cites cases signaling that no
    specific verbiage is required for incorporation, those cases still
    require language of some kind that expressly directs the reader's
    attention to the purportedly incorporated materials.               See, e.g.,
    United States v. Lazar, 
    604 F.3d 230
    , 236 (6th Cir. 2010) (holding
    that   attachment's   reference    to   "the     below   listed     patients"
    sufficed to incorporate patient list that accompanied warrant
    application); United States v. SDI Future Health Inc., 568 F.3d
    - 27 -
    684, 700 (9th Cir. 2009) (upholding incorporation when warrant
    used "suitable words of reference" that pointed explicitly to
    incorporated material).        There is certainly no support in the case
    law for the proposition that merely alluding to a document, without
    more, can alone suffice to incorporate that document by reference.
    The    government    further        contends    that     incorporated
    materials need not physically accompany a warrant application that
    is presented to a magistrate.            But the cases that the government
    cites   in   this    regard    address     the    separate    issue    of   whether
    incorporated       materials   must    accompany      a     warrant    during   the
    execution of a search.         See, e.g., Baranski v. United States, 
    515 F.3d 857
    , 860-61 (8th Cir. 2008); United States v. Hurwitz, 
    459 F.3d 463
    , 471-72 (4th Cir. 2006).                 Nothing in those decisions
    suggests that a magistrate — when determining whether sufficient
    probable cause exists to authorize a warrant —                        may   consider
    unattached and external materials to which an affiant has only
    obliquely alluded.       What is more, the relevant case law in this
    circuit holds that "[a]n affidavit may be referred to for purposes
    of   providing      particularity     if   the    affidavit     accompanies     the
    warrant, and the warrant uses suitable words of reference which
    incorporate the affidavit."           Moss, 936 F.3d at 59 n.9 (alteration
    and emphasis in original) (quoting United States v. Roche, 
    614 F.2d 6
    , 8 (1st Cir. 1980)); see United States v. Klein, 
    565 F.2d 183
    , 186 n.3 (1st Cir. 1977).              Under this established circuit
    - 28 -
    precedent, incorporation would require both suitable words to that
    effect and the attachment of the affidavit.                  See generally United
    States v. Barbosa, 
    896 F.3d 60
    , 74 (1st Cir. 2018) (explaining
    law-of-the-circuit doctrine); United States v. Wogan, 
    938 F.2d 1446
    , 1449 (1st Cir. 1991) (same).
    Those requirements were not satisfied here.                       Although
    the second affidavit refers in passing to the first warrant by
    docket     number,     it     never    specifically      references      the       first
    affidavit.       That silence speaks volumes:                 it stands in stark
    contrast    to   the    express       incorporation     by    reference       of     both
    affidavits into their respective search warrant applications,
    demonstrating      that     Officer     Puricelli      was     aware    of     how     to
    incorporate documents properly into a warrant application.                            And
    there is nothing in the record to suggest that the first affidavit
    was   attached    to    the    second      warrant    application      when    it     was
    presented to the magistrate.
    Finally, neither the second affidavit's reference to the
    seizure of the items during the first search nor the fact that the
    second search warrant issued with a docket number successive to
    the first has much to do with the issue of incorporation.                     Together
    those    facts   might,       at   most,    suggest    that    Officer       Puricelli
    requested the second search warrant within the context of a larger
    investigation.         That suggestion, however, would be superfluous:
    Officer Puricelli stated as much in the second affidavit.                             She
    - 29 -
    explained that the affidavit did not include every fact that she
    knew about the investigation but, rather, "only those facts [she]
    believe[d] [were] sufficient to establish the requisite probable
    cause for a search warrant."            It defies logic to discount such an
    express statement directing the magistrate to the probable cause
    showing made within the affidavit itself in favor of a theory of
    implicit incorporation based on a web of attenuated inferences.
    On these facts, there is simply no basis for concluding that the
    second affidavit incorporated the first.
    D
    The fatal deficiencies of the second affidavit were
    therefore left unremedied, and the second search warrant issued
    without the required showing of probable cause.
    V
    When    a    warrant    issues         without      probable     cause,   the
    evidence   obtained      from     the     resultant           search   is   ordinarily
    suppressed.       See   Pimentel,       26       F.4th   at    90.     Suppression    is
    inappropriate, though, if the officer who conducted the search
    acted in reliance upon the defective warrant and that reliance was
    objectively reasonable. See Cordero-Rosario, 
    786 F.3d at 72
    . This
    exception, familiarly known as the "good-faith exception," is
    grounded in the principle that "the purpose of suppression is to
    deter police misconduct, and when law enforcement officers have
    obtained a search warrant in good faith and acted within its scope,
    - 30 -
    there is 'nothing to deter.'"          Coombs, 
    857 F.3d at 446
     (citation
    omitted) (quoting United States v. Leon, 
    468 U.S. 897
    , 921 (1984)).
    Notwithstanding the salutary considerations that have
    spawned it, the good-faith exception is not a panacea for every
    invalid warrant.      Importantly, an officer cannot be said to have
    relied on a warrant in good faith when the supporting affidavit is
    "so lacking in indicia of probable cause as to render official
    belief in its existence entirely unreasonable."              Leon, 
    468 U.S. at 923
     (quoting Brown      v. Illinois, 
    422 U.S. 590
    , 610-11 (1975)
    (Powell, J., concurring in part)).           That a magistrate approved the
    warrant despite its obvious deficiencies does not mitigate the
    unreasonableness of the officer's conduct.               See Vigeant, 
    176 F.3d at 572
    ; see also Malley v. Briggs, 
    475 U.S. 335
    , 346 n.9 (1986)
    ("The officer . . . cannot excuse [her] own default by pointing to
    the greater incompetence of the magistrate.").                And an officer's
    reliance on a magistrate's approval of a facially deficient warrant
    is especially unreasonable when those "deficiencies arise from the
    failure of the [officer] conducting the search to provide the
    required   supporting       information     in    the   affidavit."      Cordero-
    Rosario, 
    786 F.3d at 72-73
    ; cf. Groh v. Ramírez, 
    540 U.S. 551
    ,
    563-65 (2004) ("[B]ecause petitioner himself prepared the invalid
    warrant,   he   may   not    argue   that    he    reasonably   relied    on   the
    Magistrate's assurance that the warrant contained an adequate
    description of the things to be seized and was therefore valid.").
    - 31 -
    In    such    circumstances,    suppression      "remains       an     appropriate
    remedy."      Leon, 
    468 U.S. at 923
    .
    "The government bears the burden of showing that its
    officers acted with objective good faith."                 Brunette, 
    256 F.3d at 17
    .     In assessing the government's good-faith arguments, "we
    evaluate all of the attendant circumstances at the time of the
    warrant application and its execution."              
    Id.
        Here, the government
    has done little more than to state, in a conclusory fashion, that
    there were sufficient facts indicative of probable cause such that
    it was not objectively unreasonable for the officers to have relied
    on the second search warrant.         But the record, fairly read, belies
    the government's optimistic characterization.
    For a start, the second affidavit was "so lacking in
    indicia      of   probable   cause"    that    any    reliance       upon   it   was
    objectively unreasonable.        Leon, 
    468 U.S. at 923
    .           As we already
    have discussed, see supra Part IV(B), the affidavit encompassed
    little more than a cursory description of the images seen on
    Sheehan's phone and the bare fact of his assault — a showing so
    bereft of factual support that no reasonable officer would have
    thought the warrant valid.       See Doyle, 
    650 F.3d at 470-76
     (holding
    that evidence of molestation and possession of nude images not
    enough to engender good-faith reliance that warrant for child
    pornography was supported by sufficient probable cause); United
    States v. Hodson, 
    543 F.3d 286
    , 293 (6th Cir. 2008) (finding good-
    - 32 -
    faith    exception     did     not    apply    when   evidence    of    only       child
    molestation     was     used     to    obtain     search    warrant     for        child
    pornography).        And even though a magistrate ultimately approved
    the warrant application, Officer Puricelli herself was responsible
    for the warrant's defects:             she had available a trove of other
    information that she could have included in the warrant application
    but which she chose to withhold.                Her decision to submit a bare
    bones affidavit and keep relevant data points to herself undercuts
    any     suggestion    that     she    was     justified     in   relying      on     the
    magistrate's assurances of the warrant's legality.                     See Cordero-
    Rosario, 
    786 F.3d at 72-73
    .
    When we have upheld searches for child pornography under
    the good-faith exception, we have done so based on affidavits that
    exhibited much more specificity and diligence than the second
    affidavit here.       See United States v. Robinson, 
    359 F.3d 66
    , 67-
    70 (1st Cir. 2004) (upholding warrant on good-faith grounds when
    affidavit included evidence that defendant had surreptitiously
    photographed       adolescents,       viewed    pornography      on   his    computer
    around minors, and asked a child to pose provocatively for him);
    see also Syphers, 
    426 F.3d at 466-68
    .                 So, too, other circuits —
    in applying the good-faith exception — have done so only when the
    affidavits    at     issue   contained        detailed    information       about    the
    history of the investigation and/or the defendant's pedophilic
    predilections.       See, e.g., United States v. Caesar, 
    2 F.4th 160
    ,
    - 33 -
    174 (3d Cir. 2021) (holding good-faith exception applicable when
    affidavit described receipt of tip from National Center for Missing
    and Exploited Children, defendant's suspicious online behavior
    seeking pictures of children in underwear, and evidence of sexual
    abuse of two children); United States v. Edwards, 
    813 F.3d 953
    ,
    971-73 (10th Cir. 2015) (same when affidavit stated that defendant
    had posted hundreds of images of child erotica, described some of
    those images in detail, contained defendant's comments related to
    those postings, and provided affiant-officer's opinion, based on
    training and experience, that purveyors of child erotica also
    possess child pornography).          The affidavit prepared by Officer
    Puricelli in connection with the application for the second search
    warrant is conspicuously lacking in this level of detail.
    Nor can it be said — even considering all the attendant
    circumstances     —    that   Officer   Puricelli   held    an     objectively
    reasonable belief that her first affidavit was incorporated into
    the application for the second search warrant.             To be sure, the
    second affidavit made clear that the devices to be searched had
    been seized during a previous search of Sheehan's home and that a
    prior   warrant       application   concerning   those     items    had   been
    submitted to the Hingham District Court. But those facts — whether
    viewed singly or in the ensemble — do not form the basis for a
    reasonable belief that the first affidavit was incorporated into
    - 34 -
    the second when considered within the context of the record as a
    whole.
    The record shows that the second affidavit stated that
    it did not contain all the facts that the police had uncovered
    during their investigation but, rather, included only those facts
    that Officer Puricelli believed were "sufficient to establish the
    requisite probable cause for a search warrant."               Giving due
    consideration to that statement, it would be wholly unreasonable
    for an officer to presume that the magistrate — in making the
    probable cause determination — was to incorporate sub silentio
    facts that had been expressly excluded from the affidavit.            We
    note,    as    well,   that   each   warrant   application    explicitly
    incorporated its supporting affidavit by reference.          Seen in this
    light, it strains credulity to suggest that a reasonable officer
    would have intended to incorporate additional materials without
    using any suitable language, especially when there is no evidence
    that those materials were ever submitted to the assistant clerk as
    part of the warrant application.5         And the final straw is that
    Officer Puricelli noted on the second warrant application that her
    5 For this reason, the case at hand is easily distinguished
    from those cases cited by our dissenting colleague, in which
    officers were deemed to have had a good-faith basis for believing
    in the incorporation of an affidavit that was attached to the
    warrant application and to which the warrant application in some
    way referred. See United States v. Tracey, 
    597 F.3d 140
    , 152-53
    (3d Cir. 2010); United States v. Hamilton, 
    591 F.3d 1017
    , 1024-27
    (8th Cir. 2010).
    - 35 -
    previous application for the seizure of the devices had not made
    out    probable    cause       for    the       crime   of   child   pornography.       A
    reasonable officer, acknowledging that fact, would have understood
    the need for the second warrant application to establish probable
    cause on its own.
    Our dissenting colleague seems to suggest that because
    the    first    warrant    and       its    accompanying      application      had   been
    impounded, Officer Puricelli could reasonably have believed that
    it was inappropriate either to attach or to directly refer to those
    documents (even while expecting the assistant clerk to understand
    that those documents were implicitly incorporated by reference).
    But any such belief would surely have been unreasonable, given the
    Supreme Court's decision in Groh v. Ramírez, in which reliance on
    a facially deficient warrant that failed either to incorporate or
    to attach a sealed affidavit (which would have cured the warrant's
    deficiencies) was deemed objectively unreasonable.                        
    540 U.S. at 555, 563-65
    .       For purposes of a Fourth Amendment analysis, there
    is no material difference between the impounded warrant here and
    the sealed affidavit in Groh, see Pixley v. Commonwealth, 
    906 N.E.2d 320
    , 328 n.12 (Mass. 2009), and a reasonable officer would
    have    known     that    to    rely       on    the    impounded    warrant    without
    incorporating it properly was contrary to law.
    Relatedly, we add that the record does not support the
    notion that Officer Puricelli may have entertained a reasonable
    - 36 -
    belief that the assistant clerk was somehow apprised of the details
    of Sheehan's case such that a proper showing of probable cause was
    unnecessary.   Although some personnel at the clerk's office of the
    Hingham District Court may have been familiar with Sheehan's case
    due to the first warrant application and the ensuing motion to
    impound, each application or motion in this case was handled by a
    different officer of that court.     Short of rank speculation, there
    is simply no basis from which to presume that the assistant clerk
    who   authorized   the   second   search    warrant   was   aware   of   the
    investigatory information contained in the first affidavit.
    We understand that the police have demanding jobs.            The
    good-faith exception is designed to cut police officers some slack
    when they get close calls wrong.           See Coombs, 
    857 F.3d at 446
    .
    The case at hand, however, does not fit that mold:          it exhibits a
    failure in what is a core competency of a police officer —
    presenting sufficient probable cause of a crime to a neutral
    magistrate to justify the issuance of a warrant.                Under the
    circumstances of this case, the good-faith exception does not
    apply, and suppression of the evidence is required.         See Leon, 
    468 U.S. at 923
    .
    VI
    The expansion of the good-faith exception in Herring v.
    United States, 
    555 U.S. 135
     (2009), to cases involving police
    negligence does not alter our analysis.         In Herring, the Supreme
    - 37 -
    Court declined to apply the exclusionary rule to evidence obtained
    by police after they effected an arrest pursuant to a facially
    valid warrant, which — unbeknownst to them — had been recalled.
    See 
    id. at 138, 147-48
    .        The Court explained that "when police
    mistakes are the result of negligence . . . , rather than systemic
    error or reckless disregard of constitutional requirements," the
    "marginal deterrence" gained by the exclusionary rule fails to
    justify the "harm to the justice system" wrought by letting a
    criminal go free.     
    Id. at 147-48
    .       "To trigger the exclusionary
    rule,"   Chief   Justice   Roberts    wrote,    "police   conduct     must   be
    sufficiently deliberate that exclusion can meaningfully deter it,
    and sufficiently culpable that such deterrence is worth the price
    paid by the justice system."          
    Id. at 144
    .       Because the police
    conduct in that case had not been "deliberate, reckless, or grossly
    negligent," or the result of "recurring or systemic negligence,"
    the Court declined to apply the exclusionary rule.           Id.; see Davis
    v. United States, 
    564 U.S. 229
    , 238 (2011) (stating that deterrent
    effect of exclusionary rule is attenuated when police error stems
    from isolated negligence).
    The Herring Court took pains to anchor its holding to
    precedent.   See 
    555 U.S. at 144-46
    .       Far from breaking new ground,
    Herring applied     the rationale     elaborated    in Leon:        that the
    exclusionary rule should not be invoked when the rule's social
    costs    outweigh   the    benefits   derived    from     deterring    police
    - 38 -
    misconduct.    See Herring, 
    555 U.S. at 147-48
    ; see also Leon, 
    468 U.S. at 909-10
    .       Nothing in Herring suggests an expansion of the
    good-faith exception to circumstances that Leon previously held to
    be beyond the pale — such as the issuance of a warrant based on an
    affidavit "so lacking in indicia of probable cause" as to render
    any reliance on it "entirely unreasonable."                Leon, 
    468 U.S. at 923
    .    That is the situation presented here.
    We do not read Herring to require an additional or
    individualized assessment of the deliberateness and culpability of
    police   conduct   in    such    circumstances.       Submitting   a    warrant
    application so deficient in probable cause such that no officer
    could reasonably rely upon it is exactly the kind of police conduct
    the    exclusionary     rule    is   meant   to   deter.    See   
    id. at 926
    ("[S]uppression is appropriate only if the officers were dishonest
    or reckless in preparing their affidavit or could not have harbored
    an objectively reasonable belief in the existence of probable
    cause."); United States v. Fuccillo, 
    808 F.2d 173
    , 178 (1st Cir.
    1987) (holding that failure to furnish affidavit with "information
    which was known or easily accessible" to police reflected reckless
    conduct to which good-faith exception did not apply).                   To hold
    otherwise would expand the good-faith exception to swallow, in a
    single gulp, the warrant requirement itself.               That cannot be the
    - 39 -
    law.       If the good-faith exception is to have any limits, it cannot
    encompass the police conduct that occurred here.6
    VII
    We need go no further. For the reasons elucidated above,
    the district court's denial of the motion to suppress is affirmed
    in part and reversed in part; the defendant's conviction and his
    conditional guilty plea are vacated; and the case is remanded to
    the district court for further proceedings consistent with this
    opinion.
    — Dissenting Opinion Follows —
    Our dissenting colleague contends that the exclusionary rule
    6
    is inappropriate here because the first warrant supplied
    sufficient probable cause to search Sheehan's electronic devices
    in their entirety, rendering the second warrant altogether
    unnecessary.   In support, she relies on the decision in United
    States v. Monell, 
    801 F.3d 34
     (1st Cir. 2015), but that reliance
    is misplaced.      Monell itself distinguished Cordero-Rosario
    because, although the affidavit at issue in Cordero-Rosario
    "suffered from 'glaring deficiencies,'" the affidavit at issue in
    Monell "provide[d] probable cause to believe that a crime involving
    gun use had occurred, and that some evidence related to that crime
    was in [the] apartment" that was searched. 
    801 F.3d at 42
     (quoting
    Cordero-Rosario, 
    786 F.3d at 71-72
    ). As we have explained, the
    second warrant issued in this case was supported by an affidavit
    that was insufficient for the same reasons that the affidavit in
    Cordero-Rosario was insufficient. Thus, Monell — on its own terms
    — is of no help to the government's argument that we should uphold
    the search conducted under the second affidavit on good-faith
    grounds. And to the extent that our dissenting colleague suggests
    that the first warrant, standing alone, provided an independently
    sufficient basis for the government to search Sheehan's electronic
    devices in a way that would have uncovered the images at issue,
    the government has made no such argument to us.
    - 40 -
    LYNCH, Circuit Judge, dissenting.                   With respect, I
    regret that the majority has improperly rejected the good-faith
    exception to the exclusionary rule, which clearly applies here.
    See United States v. Leon, 
    468 U.S. 897
    , 922-25 (1984); see also
    Davis v. United States, 
    564 U.S. 229
    , 236-41 (2011); Herring v.
    United States, 
    555 U.S. 135
    , 139-48 (2009).              The majority errs in
    concluding that the law of incorporation of earlier materials into
    the   second    affidavit    was    so   clear    that    the    prophylaxis   of
    suppression is justified.          And, regardless of whether the first
    warrant was incorporated, exclusion is not justified on the cost-
    benefit analysis described in Davis and Herring.                  Under binding
    Supreme Court case law and First Circuit precedent, we are required
    to affirm the district court's denial of the motion to suppress.                I
    dissent and would, as required by federal law, show greater respect
    for   the   actions   of    the    state   judicial      and    law   enforcement
    officials.
    The majority errs in holding that the second warrant,
    dated August 29, 2018, was "based on an affidavit 'so lacking in
    indicia of probable cause as to render official belief in its
    existence      entirely    unreasonable,'"       such    that   the    good-faith
    exception does not apply.         Leon, 
    468 U.S. at 923
     (quoting Brown v.
    Illinois, 
    422 U.S. 590
    , 611 (1975) (Powell, J., concurring in
    part)).     In addition to recounting that Sheehan had been arrested
    for indecent assault and battery of a child under the age of
    - 41 -
    fourteen and that the Computer Crimes Unit officer found "images
    of prepubescent penises that lacked pubic hair" on Sheehan's
    iPhone, this affidavit referred four times to the first warrant by
    its docket number. The affidavit also made clear that it concerned
    items that had been seized pursuant to the first warrant.     And the
    second warrant application was given the very next docket number
    after the first warrant.     Even if one assumes arguendo that the
    first warrant needed to be incorporated into the affidavit, a
    dubious proposition, this first warrant supplied highly probative
    information, such as the fact that a witness reported that Sheehan
    had access to a young boy's "texts, pictures and videos" and
    "sp[ied]" on him.    And, as I describe later, suppression would not
    be justified here regardless of whether the first warrant was
    incorporated.
    The majority discounts other facts about the second
    warrant application that bear on the incorporation inquiry.      The
    Massachusetts state court that issued the warrant is the Hingham
    District Court.     It is a small court.   There can be no doubt that
    the judicial officer who authorized the second warrant was aware
    of the first warrant.       And between the issuance of the first
    warrant and the application for the second warrant, the court had
    impounded the first warrant, affidavit, and return.7      This order
    7    "The terms 'impounded' and 'sealed' are closely
    related . . . . [A]n order of impoundment prevents the public, but
    - 42 -
    further explains why the second affidavit referred to the first
    warrant by docket number rather than including details from this
    earlier warrant.8
    The majority's reliance on Groh v. Ramírez, 
    540 U.S. 551
    (2004), to argue that a reasonable officer could not have believed
    that the second warrant application incorporated the first warrant
    and warrant application is misplaced for multiple reasons.        First,
    Groh addressed the very different question whether a warrant that
    completely failed to identify the property to be seized was valid.
    
    Id. at 554
    .   This violated the particularity requirement expressly
    set forth in the Fourth Amendment.       
    Id. at 557
    .   Here, there is no
    dispute   that   the   second   warrant    application   and   affidavit
    described the property to be seized with particularity.        There was
    no "glaring deficiency" in the warrant application akin to that at
    issue in Groh.   
    Id. at 564
    .
    Further, Groh did not turn on arguments about documents'
    sealed status, and the Court did not make new law on this point.
    The Court declined to "explore the matter of incorporation" at any
    length because it accepted the premise that "the warrant did not
    not the parties, from gaining access to impounded material, unless
    otherwise ordered by the court."     Pixley v. Commonwealth, 
    906 N.E.2d 320
    , 328 n.12 (Mass. 2009).
    8    In my view, the state court got it right when it issued
    the second warrant.     That is so even before the good-faith
    exception is applied.
    - 43 -
    incorporate other [sealed] documents by reference."                Id. at 558;
    see id. at 554-55, 557-58.          Groh did not decide whether the fact
    that a document is sealed or impounded bears on the reasonableness
    of   an   officer's   belief   as    to   the   sufficiency   of   efforts   to
    incorporate that document.          See id. at 557-58.
    Two final points on Groh bear note.          To the extent the
    decision mentioned the Leon good-faith exception, that reference
    predates the Court's expansion of the good-faith doctrine in
    Herring and Davis.      And Groh itself was the product of a divided
    Court, with Chief Justice Rehnquist and Justices Scalia, Kennedy,
    and Thomas all in dissent.
    It was reasonable for the officers to believe that the
    many indicia of incorporation, in combination with the other facts
    in the second warrant, sufficed to show probable cause. See United
    States v. Tracey, 
    597 F.3d 140
    , 152 (3d Cir. 2010) ("Even though
    we conclude these efforts [to expressly incorporate an affidavit]
    were not legally sufficient . . . it would be reasonable for an
    officer in [this officer's] position to believe the affidavit was
    properly incorporated and, therefore, the warrant was valid.");
    United States v. Hamilton, 
    591 F.3d 1017
    , 1029 (8th Cir. 2010)
    (concluding that it was reasonable for an officer to rely on a
    warrant "even if [the court] were now to conclude that the words
    of incorporation [used in the warrant] were less than clear").               It
    is clear that there is no overcoming of the principle announced in
    - 44 -
    Leon.   See 
    468 U.S. at 922
     ("'[A] warrant issued by a magistrate
    normally suffices to establish' that a law enforcement officer has
    'acted in good faith in conducting the search.'" (quoting United
    States v. Ross, 
    456 U.S. 798
    , 823 n.32 (1982))).
    The majority and I also disagree about the contours of
    the Leon good-faith exception after Davis and Herring.          As stated,
    my view is that the majority’s holding fails even the Leon test.
    It certainly fails under the doctrinal changes worked by Davis and
    Herring, which further restricted the use of the exclusionary rule.
    See, e.g., United States v. Caesar, 
    2 F.4th 160
    , 169 (3d Cir. 2021)
    (describing, in a warrant-based search case, Davis and Herring as
    "further refine[ments to] the [Leon] good faith exception, placing
    the culpability of the officer's misconduct at the center of the
    deterrence analysis" and stating that "[i]t could be said that
    these [cases] . . . further narrowed the scope of the exclusionary
    rule"); R. Re, The Due Process Exclusionary Rule, 
    127 Harv. L. Rev. 1885
    , 1887 (2014) (describing Herring as providing "the
    doctrinal basis for radically curtailing the circumstances in
    which the Fourth Amendment exclusionary rule might apply").
    Herring   instructs   that     "[t]he   fact   that   a   Fourth
    Amendment violation occurred . . . does not necessarily mean that
    the exclusionary rule applies" and that the exclusionary rule
    applies only where "the benefits of deterrence . . . outweigh the
    - 45 -
    costs" of applying the rule.       
    555 U.S. at 140-41
    .9         "To trigger
    the   exclusionary   rule,    police    conduct   must   be    sufficiently
    deliberate    that   exclusion    can    meaningfully      deter   it,   and
    sufficiently culpable that such deterrence is worth the price paid
    by the justice system."      
    Id. at 144
    .   Thus, exclusion is typically
    proper only where officers engage in "deliberate, reckless, or
    grossly negligent conduct," or, "in some circumstances," where
    there is "recurring or systemic negligence."         
    Id.
          Applying these
    principles, the Herring Court held that a negligent recordkeeping
    error that led an officer to make an arrest based on a recalled
    warrant should not result in exclusion of the evidence found during
    the arrest.   See 
    id. at 136-38, 147-48
    .
    The Supreme Court reiterated this cost-benefit analysis
    two years later in Davis.        Davis emphasized that deterrence is
    "the sole purpose of the exclusionary rule" and rejected the
    argument that "facilitating the overruling of precedent" was a
    relevant consideration.      
    564 U.S. at 246
    .
    Our circuit has repeatedly relied on Davis and Herring
    to conclude that the good-faith exception applies where a police
    mistake amounts to isolated negligence rather than intentional,
    reckless, or grossly negligent misconduct.         See United States v.
    9   Herring involved a defendant who was "no stranger to law
    enforcement." 
    555 U.S. at 137
    . Similarly, Sheehan had been under
    investigation for seven weeks before officers obtained an arrest
    warrant.
    - 46 -
    Monell, 
    801 F.3d 34
    , 41 (1st Cir. 2015) (assuming warrant was
    invalid but concluding that, under Herring, "the nature, effect,
    and cause of this particular type of . . . invalidity are such as
    to render the exclusionary rule inapplicable"); United States v.
    Echevarría-Ríos, 
    746 F.3d 39
    , 40-41 (1st Cir. 2014) (finding good-
    faith exception applicable where defendant failed to show that
    officers engaged in intentional, reckless, or grossly negligent
    misconduct in relying on procedurally defective warrant to arrest
    him); see also United States v. Cruz-Ramos, 
    987 F.3d 27
    , 42 n.9
    (1st Cir. 2021) (concluding that defendant waived applicability of
    exclusionary rule where he did not engage in Herring cost-benefit
    weighing analysis); United States v. Thomas, 
    736 F.3d 54
    , 60, 66
    (1st Cir. 2013) (concluding that social costs of excluding DNA
    sample obtained in earlier investigation would outweigh deterrent
    value).
    Here, there can be no possible deterrent effect to be
    accomplished   by   excluding    the     evidence   on   the   cost-benefit
    analysis described in Davis and Herring.            See United States v.
    Szczerba, 
    897 F.3d 929
    , 939 (8th Cir. 2018) (applying good-faith
    exception   where   officer     "acted    negligently    in    drafting   the
    warrant . . . [and] should have . . . ensured that the supporting
    affidavit was incorporated into the warrant," but her "conduct
    certainly did not reflect the type of deliberate, reckless, or
    - 47 -
    grossly negligent disregard for the Fourth Amendment that the
    exclusionary rule can effectively deter").
    That there could be no possible deterrent effect is
    underscored by the fact that the officers here need not have taken
    the cautious measure of applying for a second search warrant to
    search the devices seized under the first warrant.                       The first
    warrant    authorized      officers    to   search      Sheehan's      devices   for
    "computer data files or cellular / smart phone data files" in
    relation    to   the    four    crimes      set   forth     in    that    warrant:
    impersonation      of   a    police      officer,       witness     intimidation,
    unauthorized access to a computer system, and identity fraud.                     See
    Mass. Gen. Laws ch. 266, §§ 37E, 120F; id. ch. 268, §§ 13B, 33.
    This situation is thus similar to Monell, where we applied the
    good-faith exception to a labeling error in an affidavit because,
    if this error had not occurred, "there still would have been a
    search" on a different basis, "that search would have been valid,"
    and   "precisely    that    evidence     which    was    found    in    the   search
    challenged here would have been found in [the] valid search."                    
    801 F.3d at 41
    .        The majority attempts to distinguish Monell by
    contending that its rule applies only when the affidavit at issue
    is not "glaring[ly] deficien[t]."              (Quoting 
    id. at 42
    .)              Even
    assuming the validity of that premise, here -- for all the reasons
    - 48 -
    previously    stated   --   the   second    affidavit   is   not   "glaringly
    deficient."
    With the greatest respect for my colleagues, I dissent.
    - 49 -