United States v. Hernando Javier Vergara , 884 F.3d 1309 ( 2018 )


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  •                Case: 16-15059       Date Filed: 03/15/2018      Page: 1 of 21
    [PUBLISH]
    IN THE UNITED STATES COURT OF APPEALS
    FOR THE ELEVENTH CIRCUIT
    ________________________
    No. 16-15059
    ________________________
    D.C. Docket No. 8:16-cr-00021-JDW-MAP-1
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    versus
    HERNANDO JAVIER VERGARA,
    Defendant-Appellant.
    ________________________
    Appeal from the United States District Court
    for the Middle District of Florida
    _______________________
    (March 15, 2018)
    Before WILLIAM PRYOR, JILL PRYOR and CLEVENGER, * Circuit Judges.
    WILLIAM PRYOR, Circuit Judge:
    *
    Honorable Raymond C. Clevenger III, United States Circuit Judge for the Federal Circuit,
    sitting by designation.
    Case: 16-15059    Date Filed: 03/15/2018   Page: 2 of 21
    This appeal presents the issue whether warrantless forensic searches of two
    cell phones at the border violated the Fourth Amendment. U.S. Const. amend IV.
    Hernando Javier Vergara appeals the denial of his motion to suppress evidence
    found on two cell phones that he carried on a cruise from Cozumel, Mexico to
    Tampa, Florida. He argues that the recent decision of the Supreme Court in Riley v.
    California, 
    134 S. Ct. 2473
    (2014)—that the search-incident-to-arrest exception to
    the warrant requirement does not apply to searches of cell phones—should govern
    this appeal. But we disagree. The forensic searches of Vergara’s cell phones
    occurred at the border, not as searches incident to arrest, and border searches never
    require a warrant or probable cause. At most, border searches require reasonable
    suspicion, but Vergara has not argued that the agents lacked reasonable suspicion
    to conduct a forensic search of his phones. We affirm.
    I. BACKGROUND
    Vergara returned to Tampa, Florida on a cruise ship from Cozumel, Mexico,
    with three phones: a Samsung phone inside a bag in his luggage, an LG phone, and
    an iPhone. Christopher Ragan, an officer with Customs and Border Protection,
    identified Vergara and searched his luggage. When Ragan found the Samsung
    phone in Vergara’s luggage, he asked Vergara to turn the phone on and then
    looked through the phone for about five minutes. During this search, Ragan found
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    a video of two topless female minors. After watching a few seconds of that video,
    Ragan called investigators for the Department of Homeland Security.
    After viewing the video and interviewing Vergara, Terri Botterbusch, a
    special agent with the Department of Homeland Security, decided to have all three
    phones forensically examined. Agents later returned the iPhone to Vergara’s niece
    after a forensic examination revealed that it did not contain any child pornography.
    A forensic examination of the Samsung and LG phones conducted that day
    revealed more than 100 images and videos, “the production of which involved the
    use of a minor engaging in sexually explicit conduct and the visual depictions were
    of such conduct.” Neither the earlier manual search nor the forensic examinations
    damaged the phones. A grand jury later indicted Vergara on two counts: (1) that he
    “did knowingly transport in and affecting interstate and foreign commerce one or
    more visual depictions, the production of which involved the use of a minor
    engaging in sexually explicit conduct and such visual depictions were of such
    conduct”; and (2) that he “did knowingly possess numerous matters that had been
    shipped and transported using any means and facility of interstate and foreign
    commerce, including by computer, which matters contained visual depictions of
    minors engaging in sexually explicit conduct and the production of which involved
    the use of minors engaging in sexually explicit conduct.” See 18 U.S.C.
    § 2252(a)(1), (b)(1); 18 U.S.C. § 2252(a)(4)(B), (b)(2).
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    Vergara filed a motion to suppress the evidence obtained from his cell
    phones. The court held a suppression hearing, at which Ragan and Botterbusch
    testified, and later denied Vergara’s motion. The district court ruled that the initial
    manual search did not require reasonable suspicion and found that “in any
    event, . . . Agent Ragan had reasonable suspicion to search the applications and
    settings of the phone for evidence of child pornography.” The district court also
    rejected Vergara’s argument that Riley v. California, 
    134 S. Ct. 2473
    (2014),
    required the agents to obtain a warrant before conducting the forensic search. It
    reasoned that Riley did not apply to border searches. It agreed with the government
    that “if [Vergara] had entered the country with child pornography images in a
    notebook, the notebook would have been subject to inspection, and he cannot be
    allowed to insulate himself from inspection by storing child pornography
    electronically on his cell phone.” And it concluded that, in any event, the search
    was supported by reasonable suspicion.
    At a later bench trial, the district court found Vergara guilty of both counts
    and later sentenced him to ninety-six months imprisonment on each count
    concurrently followed by supervision for life.
    II. STANDARD OF REVIEW
    “With regard to [a] motion to suppress, we review the district court’s factual
    findings for clear error and its legal conclusions de novo.” United States v.
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    Newsome, 
    475 F.3d 1221
    , 1223 (11th Cir. 2007). We construe all facts “in the light
    most favorable to the prevailing party below.” 
    Id. at 1224
    (internal quotation marks
    omitted). And “[t]he individual challenging the search bears the burdens of proof
    and persuasion.” 
    Id. (internal quotation
    marks omitted).
    III. DISCUSSION
    The Fourth Amendment to the U.S. Constitution provides, “The 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 . . . .” U.S. Const. amend. IV. Ordinarily, “where a
    search is undertaken by law enforcement officials to discover evidence of criminal
    wrongdoing, reasonableness . . . requires the obtaining of a judicial warrant.” 
    Riley, 134 S. Ct. at 2482
    (alterations adopted) (internal quotation marks omitted). But
    searches at the border, “from before the adoption of the Fourth Amendment, have
    been considered to be ‘reasonable’ by the single fact that the person or item in
    question had entered into our country from outside.” United States v. Ramsey, 
    431 U.S. 606
    , 619 (1977). Border searches “never” require probable cause or a warrant.
    
    Id. And we
    require reasonable suspicion at the border only “for highly intrusive
    searches of a person’s body such as a strip search or an x-ray examination.” United
    States v. Alfaro-Moncada, 
    607 F.3d 720
    , 729 (11th Cir. 2010).
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    The forensic searches of Vergara’s phones required neither a warrant nor
    probable cause. “The Supreme Court has consistently held that border searches are
    not subject to the probable cause and warrant requirements of the Fourth
    Amendment.” United States v. Vega-Barvo, 
    729 F.2d 1341
    , 1344 (11th Cir. 1984)
    (citing 
    Ramsey, 431 U.S. at 619
    ). Instead, “they are simply subject to that
    amendment’s more amorphous reasonableness standard.” United States v.
    Villabona-Garnica, 
    63 F.3d 1051
    , 1057 (11th Cir. 1995). The “longstanding
    recognition that searches at our borders without probable cause and without a
    warrant are nonetheless ‘reasonable’ has a history as old as the Fourth Amendment
    itself.” 
    Ramsey, 431 U.S. at 619
    . And “[t]here has never been any additional
    requirement that the reasonableness of a border search depended on the existence
    of probable cause.” Id.; see also United States v. Montoya de Hernandez, 
    473 U.S. 531
    , 537–38 (1985).
    Vergara argues that Riley required a warrant for both the manual and the
    forensic searches of his phones, but he challenges only the forensic searches
    because no evidence from the manual search was admitted as evidence against
    him. In Riley, the Supreme Court addressed the constitutionality of warrantless
    manual searches of cell phones following the arrest of two defendants in the United
    
    States. 134 S. Ct. at 2480
    –82. And the Supreme Court expressly limited its holding
    to the search-incident-to-arrest exception. It explained that “even though [that]
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    exception does not apply to cell phones, other case-specific exceptions may still
    justify a warrantless search of a particular phone.” 
    Id. at 2494.
    Border searches have long been excepted from warrant and probable cause
    requirements, and the holding of Riley does not change this rule. Vergara points to
    language from Riley about the “consequences for privacy” involved in a search of a
    cell phone. 
    Id. at 2489.
    But this language does not help him. At the border, the
    highest standard for a search is reasonable suspicion, see 
    Vega-Barvo, 729 F.2d at 1344
    –45, and Vergara has not challenged the finding of the district court that
    reasonable suspicion existed for the searches of his phones. So we need not—and
    do not—address the questions whether reasonable suspicion was required for the
    searches or whether reasonable suspicion existed.
    IV. CONCLUSION
    We AFFIRM Vergara’s judgment of conviction and sentence.
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    JILL PRYOR, Circuit Judge, dissenting:
    In this case we decide for the first time whether a warrantless forensic search
    of a cell phone at the United States border comports with the Fourth Amendment.
    To determine whether a law enforcement practice is constitutional, courts must
    balance its promotion of legitimate government interests against its intrusion on an
    individual’s Fourth Amendment rights. United States v. Montoya de Hernandez,
    
    473 U.S. 531
    , 537 (1985). Here, we weigh the government’s interest in conducting
    warrantless forensic cell phone searches at the border with Hernando Vergara’s
    privacy interest in his cellular devices and the data they contain.
    The majority opinion concludes that this balance weighs heavily in the
    government’s favor because the searches occurred at the border. I agree with the
    majority that the government’s interest in protecting the nation is at its peak at the
    border, but I disagree with the majority’s dismissal of the significant privacy
    interests implicated in cell phone searches, as articulated by the Supreme Court in
    Riley v. California, 
    134 S. Ct. 2473
    (2014). Because Riley did not involve a border
    search, I acknowledge that I can, at best, attempt to predict how the Supreme Court
    would balance the interests here. But my weighing of the government’s
    heightened interest at the border with Vergara’s privacy interest in his cell phones
    leads me to a result different than the majority’s. I respectfully dissent because, in
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    my view, a forensic search of a cell phone at the border requires a warrant
    supported by probable cause.
    I.      BACKGROUND
    Vergara, a United States citizen, arrived at the Port of Tampa, Florida,
    having returned from a vacation in Cozumel, Mexico. Before his return, U.S.
    Customs and Border Protection (“CBP”) had identified Vergara based on his prior
    conviction for possession of child pornography, placing him on a list of the day’s
    “lookouts.” Individuals on the list are subjected to secondary screening at the
    border, which involves additional questioning and searching.
    When Vergara arrived at the port, CBP Agent Christopher Ragan escorted
    him to the secondary inspection area. In Vergara’s luggage, Ragan found two cell
    phones, a Samsung phone and an iPhone. Vergara also had a third cell phone on
    his person. Ragan took the Samsung phone and began looking through the photos
    on it, as well as “a couple apps,” finding nothing of interest. Doc. 63 at 12. 1
    Ragan then began viewing videos, one of which depicted topless females he
    believed were minors. Ragan contacted Special Agent Terri Botterbusch, a
    criminal investigator with the Department of Homeland Security. When
    Botterbusch arrived, she spent a few seconds viewing the video, observing
    underage, topless females and the logo of a website that she knew distributed child
    1
    All citations in the form “Doc. #” refer to the district court docket entries.
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    pornography. She determined that the video was child erotica, meaning it depicted
    children and was sexual in nature, but it failed to meet the statutory definition of
    child pornography.
    The agents “[did not] have the capability to forensic[ally] analyze the phone
    at the port of entry.” Doc. 63 at 23. Botterbusch therefore seized Vergara’s cell
    phones and took them to her office so “forensic agents” could conduct a full
    forensic examination. 
    Id. at 31.
    The record does not detail the mechanics of the
    forensic examination, but Botterbusch testified that it involved the “extraction of
    data” from the cell phones and that she believed it had been completed “that
    afternoon.” 
    Id. at 39.
    The forensic search ultimately revealed more than 100
    images and videos of child pornography and erotica stored on Vergara’s phones.
    Based on evidence procured from the forensic search, Vergara was arrested
    and charged with knowingly transporting child pornography, in violation of
    18 U.S.C. § 2252(a)(1) and (b)(1), and possession of child pornography, in
    violation of 18 U.S.C. § 2252(a)(4)(B) and (b)(2). He filed a motion to suppress
    the child pornography found on his cell phones; the district court denied the
    motion. Vergara agreed to a bench trial based on stipulated facts, and the district
    court found him guilty. He was sentenced to 96 months of imprisonment. Vergara
    appealed.
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    II.   DISCUSSION
    The Fourth Amendment establishes “[t]he right of the people to be secure in
    their persons, houses, papers, and effects, against unreasonable searches and
    seizures . . . .” U.S. Const. amend IV. “As the text makes clear, the ultimate
    touchstone of the Fourth Amendment is reasonableness.” 
    Riley, 134 S. Ct. at 2482
    (internal quotation marks omitted). In general, reasonableness requires the
    government to obtain a judicial warrant supported by probable cause prior to
    conducting a search. 
    Id. To “determine
    whether to exempt a given type of search
    from the warrant requirement,” courts weigh the degree to which the practice
    promotes “legitimate governmental interests” against “the degree to which it
    intrudes upon an individual’s privacy.” 
    Id. at 2484.
    This case requires us to
    balance the government’s interest in protecting the integrity of the border against
    Vergara’s privacy interest in the data extracted from his cell phones.
    Congress has granted the Executive Branch the “plenary authority to
    conduct routine searches . . . at the border, without probable cause or a warrant, in
    order to regulate the collection of duties and to prevent the introduction of
    contraband into this country.” Montoya de 
    Hernandez, 473 U.S. at 537
    . This
    exception to the warrant requirement “is grounded in the recognized right of the
    sovereign to control, subject to substantive limitations imposed by the
    Constitution, who and what may enter the country.” United States v. Ramsey, 431
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    21 U.S. 606
    , 620 (1977). Because of the “paramount interest in protecting . . . its
    territorial integrity,” the government’s interest at the border is “at its zenith.”
    United States v. Flores-Montano, 
    541 U.S. 149
    , 152 (2004).
    Given the government’s heightened interest, the Supreme Court has held, for
    example, that at the border mail may be opened without a warrant, vehicles may be
    stopped without individualized suspicion, and boats may be boarded “with no
    suspicion whatever.” Montoya de 
    Hernandez, 473 U.S. at 538
    ; see also Flores-
    
    Montano, 541 U.S. at 155
    (holding that at the border a vehicle’s gas tank may be
    disassembled and searched without any suspicion). Consistently with the Supreme
    Court’s cases involving routine border searches, we have held that living quarters
    on a ship may be searched at the border absent any suspicion. United States v.
    Alfaro-Moncada, 
    607 F.3d 720
    , 732 (11th Cir. 2010). Such searches “are
    reasonable simply by virtue of the fact that they occur at the border.” Flores-
    
    Montano, 541 U.S. at 152-53
    (internal quotation marks omitted).
    But the government’s authority at the border is not without limits. In
    Montoya de Hernandez, for example, the Supreme Court held that the prolonged
    detention of a woman who was suspected of smuggling narcotics within her
    alimentary canal was “beyond the scope of a routine customs search” and thus
    required some level of suspicion. Montoya de 
    Hernandez, 473 U.S. at 541
    .
    Although the Court expressed “no view” on the level of suspicion required for
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    “nonroutine border searches,” 
    id. at 541
    n.4, our circuit has held that “highly
    intrusive searches of a person’s body such as a strip search or an x-ray
    examination” require reasonable suspicion, 
    Alfaro-Moncada, 607 F.3d at 729
    .
    Neither the Supreme Court nor any federal circuit court has determined the
    level of suspicion required to justify the forensic search of a cell phone at the
    border.2 But in Riley, the Supreme Court suggested an answer by holding that
    probable cause and a warrant are required to manually search a cell phone
    following a lawful 
    arrest. 134 S. Ct. at 2485
    . The Supreme Court described in
    Riley the significant privacy interests that individuals hold in the contents of their
    cell phones. And, as I will explain, the privacy interests implicated in forensic
    searches are even greater than those involved in the manual searches at issue in
    Riley. In view of those interests, I would hold that a forensic search of a cell phone
    at the border requires a warrant supported by probable cause. 3
    As the Supreme Court made clear in Riley, cell phones are fundamentally
    different from any object traditionally subject to government search at the border.
    2
    In United States v. Cotterman, 
    709 F.3d 952
    (9th Cir. 2013), the Ninth Circuit
    determined that a forensic search of a laptop computer at the border required reasonable
    suspicion. That case, however, was decided prior to the Supreme Court’s decision in Riley,
    which, as I explain below, suggests that probable cause and a warrant might be required for a
    forensic search of a cell phone even at the border.
    3
    As the majority notes, because the evidence leading to Vergara’s conviction stemmed
    only from the forensic search, we need not consider the level of suspicion required to support the
    initial, manual search of the cell phones.
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    See 
    id. at 2489
    (explaining that “[t]he term ‘cell phone’ is itself misleading,” given
    that such devices “could just as easily be called cameras, video players, rolodexes,
    calendars, tape recorders, libraries, diaries, albums, televisions, maps, or
    newspapers.”) Because of their “immense storage capacity,” these devices “differ
    in a quantitative . . . sense” from the luggage, vehicles, envelopes, and boats that
    may be searched at the border without suspicion. 
    Id. Unlike those
    physical
    objects, cell phones have the capacity to store “millions of pages of text, thousands
    of pictures, or hundreds of videos.” 
    Id. Before cell
    phones, border searches were limited by “physical realities” that
    ensured any search would impose a relatively narrow intrusion on privacy. See 
    id. Individuals could
    not carry across the border all the mail they had received,
    pictures they had taken, and books they had read. See 
    id. When it
    comes to cell
    phone searches, though, these “physical realities” no longer exist. 
    Id. And, as
    the
    Court predicted in Riley, the “gulf between physical practicability and digital
    capacity will only continue to widen.” 
    Id. 4 Beyond
    these quantitative differences, the data cell phones contain is “also
    qualitatively different” from the information gleaned by searching luggage, living
    4
    At the time Riley was decided, the “top-selling smart phone” had a standard capacity of
    16 gigabytes—the equivalent of millions of physical pages of text. 
    Riley, 134 S. Ct. at 2489
    .
    Today, the standard storage capacity of that smart phone has doubled to 32 gigabytes. See Tech
    Specs for Apple iPhone 7, https://www.apple.com/iphone-7/specs/ (last visited Mar. 13, 2018).
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    quarters, and even an individual’s person. 
    Id. at 2490.
    A cell phone’s internet
    search history can “reveal an individual’s private interests or concerns—perhaps a
    search for certain symptoms of disease, coupled with frequent visits to WebMD.”
    
    Id. Cell phone
    data also may “reveal where a person has been.” 
    Id. And cell
    phone applications as well as data offer a range of information on such private and
    personal topics as addiction, religious practices, pregnancy, personal finances, and
    romance. See 
    id. The Supreme
    Court recognized in Riley that given the vast amounts of
    personal information contained on a cell phone, a cell phone search “typically
    expose[s] to the government far more than the most exhaustive search of a house,”
    which has historically received the Fourth Amendment’s most stringent
    protections. 
    Id. at 2491.
    Indeed, a cell phone “not only contains in digital form
    many sensitive records previously found in the home; it also contains a broad array
    of private information never found in a home in any form—unless the phone is.”
    
    Id. Although the
    government’s interest at the border is undoubtedly greater than
    it was in searching the arrestees in Riley, Vergara’s privacy interests are greater
    here, too. In Riley, the officers searched the arrestees’ cell phones by viewing
    videos, reading text messages, and scrolling call logs. Here, Vergara’s cell phones
    were forensically searched. Although the record does not reveal what that
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    examination entailed, generally, forensic searches are “experts’ work,” performed
    “by a trained analyst at a government forensics laboratory.” Orin S. Kerr,
    Searches and Seizures in a Digital World, 119 Harv. L. Rev. 531, 537 (2005).
    These examinations reveal “a wealth of information about how the [device] and its
    contents have been used.” 
    Id. at 542.
    Significantly, forensic searches are “capable
    of unlocking password-protected files, restoring deleted material, and retrieving
    images viewed on web sites.” Cotterman, 
    709 F.3d 952
    , 957 (9th Cir. 2013). The
    manual searches in Riley were of great concern to the Supreme Court; the forensic
    examination of cell phones should be of even greater concern given the much more
    extensive—and more heavily protected from a privacy standpoint—information it
    may expose.
    Of course, the border search exception to the warrant requirement “rests not
    only on the heightened government interests . . . but also on [travelers’] reduced
    privacy interests” at the border. 
    Riley, 134 S. Ct. at 2488
    ; see Montoya de
    
    Hernandez, 473 U.S. at 539
    (“[T]he expectation of privacy is less at the border
    than in the interior.”). But a “diminished privacy interest[] does not mean that the
    Fourth Amendment falls out of the picture entirely.” 
    Riley, 134 S. Ct. at 2488
    .
    Instead, when the “privacy-related concerns are weighty enough,” as they are in a
    forensic search of a cell phone, the search may require a warrant, “notwithstanding
    the diminished expectations of privacy.” 
    Id. (internal quotation
    marks omitted).
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    Applying the Supreme Court’s reasoning in Riley, the rationales underlying
    the border search exception lose force when applied to forensic cell phone
    searches. The border search exception is rooted in the government’s interest in
    controlling “who and what may enter the country.” 
    Ramsey, 431 U.S. at 620
    . But
    cell phones do not contain the physical contraband that border searches
    traditionally have prevented from crossing the border, “whether that be
    communicable diseases, narcotics, or explosives.” Montoya de 
    Hernandez, 473 U.S. at 544
    . And cell phone searches are ill suited to prevent the type of
    contraband that may be present on a cell phone from entering into the United
    States. Unlike physical contraband, electronic contraband is borderless and can be
    accessed and viewed in the United States without ever having crossed a physical
    border.
    To be sure, forensically searching a cell phone may lead to the discovery of
    physical contraband. A drug smuggler’s deleted text messages, for example, may
    reveal the location of drugs inside the border. But this general law enforcement
    justification is quite far removed from the purpose originally underlying the border
    search exception: “protecting this Nation from entrants who may bring anything
    harmful into this country.” 
    Id. Excepting forensic
    cell phone searches from the
    warrant requirement because those searches may produce evidence helpful in
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    future criminal investigations would thus “untether the rule from [its]
    justifications.” 
    Riley, 134 S. Ct. at 2485
    (internal quotation marks omitted).
    The government argues that requiring probable cause and a warrant before
    conducting a forensic search would allow “terrorists, spies, [and] smugglers” to
    cross the border knowing their “devices will be immune from random,
    unpredictable, and suspicionless searches.” Appellee’s Br. at 26. Certainly, cell
    phones may contain information about past, present, and future criminal activity.
    But obtaining a warrant before extracting data from a cell phone is “not merely an
    inconvenience to be . . . weighed against the claims of police efficiency”; instead,
    it is a process essential to the “machinery of our government.” 
    Riley, 134 S. Ct. at 2493
    (internal quotation marks omitted). The warrant requirement prevents the
    government from boundlessly intruding on individuals’ privacy “on the mere
    chance that desired evidence might be obtained.” Montoya de 
    Hernandez, 473 U.S. at 540
    n.3 (internal quotation marks omitted). And—critically—in the proper
    circumstances, border officers may still rely on the exigent circumstances
    exception to conduct a warrantless forensic search. See 
    Riley, 134 S. Ct. at 2494
    .
    Relative to the importance of the warrant requirement in protecting
    individual privacy in the type of information a forensic search can reveal—the
    government’s burden in seeking a warrant is minimal. Indeed, the same
    technological advances that have enabled “smart” cellular devices have made the
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    process of obtaining a warrant more efficient. The Federal Rules of Criminal
    Procedure allow judges to issue warrants “by reliable electronic means.” Fed. R.
    Crim. P. 4.1(b)(6)(C). As the Supreme Court noted in Riley, in some jurisdictions
    officers can e-mail warrant requests to judges and receive responses in fewer than
    15 
    minutes. 134 S. Ct. at 2493
    .
    Forensic searches are themselves an involved process, making the added
    burden on the government of seeking a warrant slight. In general, forensic
    examinations require “analysts [to] sift through the mountain of data in a hard
    drive and locate specific types or pieces of data.” Kerr, Searches and Seizures in a
    Digital World, supra page 9, at 538. This process involves “a range of software
    programs to aid the search, [and] can take many days or even weeks to complete.”
    
    Id. In this
    case, Agent Botterbusch had to transport Vergara’s phones to her office
    where special forensic agents had to conduct the forensic search. Requiring border
    officers to seek a warrant before beginning a forensic search, then, would add
    relatively little time to an already time-intensive process.
    I disagree with the majority that Riley is irrelevant to the forensic searches of
    Vergara’s cell phones because the Supreme Court “expressly limited its holding to
    the search-incident-to-arrest exception.” Maj. Op. at 7. The majority relies on the
    Supreme Court’s statement that “other case-specific exceptions may still justify a
    warrantless search of a particular phone.” 
    Riley, 134 S. Ct. at 2494
    . But that
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    statement was in response to the government’s “extreme hypotheticals” about the
    danger of requiring a warrant to search an arrestee’s cell phone, for example, when
    “a suspect [is] texting an accomplice who . . . is preparing to detonate a bomb.” 
    Id. To allay
    the government’s concerns, the Supreme Court clarified that exceptions to
    the warrant requirement, like the exigent circumstances exception, would still be
    available in the proper circumstances. 
    Id. I acknowledge,
    of course, that because Riley concerned a distinct exception
    to the warrant requirement, it does not compel the outcome I advocate here. The
    Supreme Court clarified that it was not holding “that the information on a cell
    phone is immune from search.” 
    Id. at 2493.
    But unlike the majority, I do not read
    Riley so narrowly as to prevent its application to cell phone searches in other
    contexts, including at the border. As the Court went on to explain in Riley, “[its
    holding was] instead that a warrant is generally required before [a cell phone]
    search, even when a cell phone is seized incident to arrest.” 
    Id. (emphasis added).
    I believe we must look to Riley to inform our analysis of Vergara’s privacy interest
    in his cell phones—the very same interests held by the arrestees in Riley—to
    determine whether a warrant is required for a forensic cell phone search even when
    the search occurs at the border. Due to the extreme intrusion into privacy posed by
    a forensic cell phone search—well beyond the intrusion posed by a manual
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    Case: 16-15059       Date Filed: 03/15/2018     Page: 21 of 21
    search—I would hold that Vergara’s privacy interest outweighs the government’s
    interest in conducting such a search, even at the border.
    I note finally that, as the first federal circuit court to determine whether a
    warrant is required to conduct a forensic search of a cell phone at the border post-
    Riley, the majority’s decision likely will have a profound impact on law
    enforcement practices at our ports of entry and on the individuals subjected to
    those practices. Last year, customs officers searched more than 30,000 cell phones
    or other electronic devices of people entering and leaving the United States—
    nearly a 60 percent increase over the previous year. 5 Meanwhile, for the more than
    95 percent of Americans who own cell phones,6 these devices contain “the
    privacies of life” the Fourth Amendment exists to protect. Riley, 
    134 S. Ct. 2495
    (quoting Boyd v. United States, 
    116 U.S. 616
    , 630 (1886)). My answer to the
    question of what law enforcement officials must do before forensically searching a
    cell phone at the border, like the Supreme Court’s answer to manually searching a
    cell phone incident to arrest, “is accordingly simple—get a warrant.” 
    Id. 5 CBP
    Releases Updated Border Search of Electronic Device Directive and FY17
    Statistics, U.S. Customs and Border Protection (Jan. 5, 2018),
    https://www.cbp.gov/newsroom/national-media-release/cbp-releases-updated-border-search-
    electronic-device-directive-and.
    6
    Pew Research Center, Mobile Fact Sheet (Feb. 5, 2018),
    http://www.pewinternet.org/fact-sheet/mobile/.
    21