United States v. Barajas , 710 F.3d 1102 ( 2013 )


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  •                                                                      FILED
    United States Court of Appeals
    Tenth Circuit
    March 4, 2013
    PUBLISH                  Elisabeth A. Shumaker
    Clerk of Court
    UNITED STATES COURT OF APPEALS
    TENTH CIRCUIT
    UNITED STATES OF AMERICA,
    Plaintiff - Appellee,
    No. 12-3003
    v.
    SAMUEL BARAJAS, a/k/a Sammy,
    Defendant - Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF KANSAS
    (D.C. No. 2:10-CR-20077-JWL-2)
    Branden A. Bell (and Carl Folsom, III, of Bell, Folsom, P.A., with him on the
    briefs) Olathe, Kansas, for Defendant - Appellant.
    Nathan Judish (Barry R. Grissom, United States Attorney, and Trent M. Krug,
    Special Assistant United States Attorney, with him on the brief), Kansas City,
    Kansas, for Plaintiff - Appellee.
    Before KELLY, HOLLOWAY, and MATHESON, Circuit Judges.
    KELLY, Circuit Judge.
    Defendant-Appellant Samuel Barajas was convicted in a jury trial of
    conspiracy to distribute more than 500 grams of methamphetamine, 21 U.S.C. §§
    846 and 841(a)(1), (b)(1)(B)(viii) (Count 1); aiding and abetting possession with
    intent to distribute 50 grams or more of methamphetamine, 21 U.S.C.
    §§ 841(a)(1) and (b)(1)(B)(viii) (Count 2); and using a communication facility, a
    cellular telephone, in committing, causing, and facilitating the conspiracy, 21
    U.S.C. § 843(b) (Count 3). Mr. Barajas was sentenced to life in prison on Counts
    1 and 2 and four years on Count 3, to run concurrently, and to five years’
    supervised release on Counts 1 and 2, and one year on Count 3, again to run
    concurrently. On appeal, he challenges the denial of his motion to suppress all
    evidence obtained from the wiretap surveillance and GPS pinging of certain cell
    phones. Exercising jurisdiction under 28 U.S.C. § 1291, we affirm.
    Background
    This case arises from a DEA investigation into a San Diego County based
    drug trafficking organization, involved in the importation, transportation, and
    distribution of large quantities of methamphetamine and cocaine from Mexico
    throughout the United States. III R. 32–33. As part of its investigation, DEA
    agents engaged in wiretap surveillance and GPS pinging 1 of cell phones used by
    1
    At Mr. Barajas’s trial, a DEA agent explained the pinging process:
    [P]ursuant to the court order that authorizes the wiretap, we also
    received the authorization to conduct first-party and third-party GPS
    pings or queries, which is—basically, a first-party query would be
    contacting Sprint/Nextel, asking them to do a GPS query on . . . the
    target telephone being used by [Mr. Barajas]. Sprint/Nextel would
    return with the GPS coordinates for the location of that telephone
    within a certain radius, depending on the telephone’s physical
    -2-
    members of the organization, including Mr. Barajas.
    In March 2009, agents learned from a confidential source that Jesus
    Dominguez, a leader of the organization, was importing 30 to 40 pounds of
    methamphetamine and 20 kilograms of cocaine into the United States each week.
    
    Id. at 34. Agents
    began an investigation into Mr. Dominguez, using traditional
    investigative techniques at first. 
    Id. at 37. However,
    agents soon decided that a
    wiretap of Mr. Dominguez’s phone, referred to as Target Telephone (TT) No. 1,
    was necessary to further the investigation. 
    Id. at 37–38. On
    May 14, 2009,
    agents submitted a wiretap application, which included a 30-page affidavit of
    Special Agent Brent Ashton and proposed wiretap order, to San Diego County
    Superior Court, seeking authorization under California Penal Code Section
    629.52, the California equivalent to the federal wiretap statute. 
    Id. at 27–65. The
    affidavit set forth Agent Ashton’s training and experience in law enforcement and
    narcotics investigations, along with the facts establishing probable cause and
    location and distance from cell towers. . . . [A] third-party ping[], . . .
    would be GPS pings on any telephones in communication with the
    target telephone.
    ....
    [T]he request is done electronically through a secure website that
    Sprint has set up, and basically I send the request, they acknowledge
    the request, and then within a matter of time Sprint/Nextel begins
    providing the GPS coordinates . . . . I plug those GPS coordinates
    into Google maps, and it would come up with the location of that
    telephone.
    II R. 115–16.
    -3-
    necessity. 
    Id. at 27–56. The
    affidavit indicated that agents had used telephone
    tolls, physical surveillance, and a confidential source, but that these techniques,
    among other measures, were or would be inadequate. 
    Id. After reviewing the
    application, the judge granted the order. 
    Id. at 57–65. Through
    the wiretap of TT No. 1, agents learned of Mr. Barajas, identified
    then as “Samy last name unknown.” II R. 89. After hearing repeated references
    to “Samy,” agents sought a wiretap on his phone, TT No. 24. 
    Id. On February 9,
    2010, a judge approved the wiretap application, which included a proposed order
    and 153-page affidavit of Agent Ashton. III R. 190–348. As before, the affidavit
    set forth Agent Ashton’s training and experience, along with the facts establishing
    probable cause and necessity. 
    Id. With respect to
    probable cause, the affidavit detailed Mr. Barajas’s role in
    the conspiracy. 
    Id. at 226. The
    affidavit listed intercepted conversations—e.g.,
    May 22, 2009, when Mr. Barajas told Mr. Dominguez that he would take “tickets”
    to the man, 
    id. at 227; December
    7, 2009, when Mr. Dominguez told Mr. Barajas
    that “the girl” would be bringing the “lawsuits,” 
    id. at 295; and
    January 29, 2010,
    when Mr. Barajas told Mr. Dominguez to tell “the girl” to leave for Kansas City,
    
    id. at 312. The
    affidavit included Agent Ashton’s interpretation of these
    conversations, and in particular, his belief that the conversation from January 29
    detailed a plan to send a courier to Kansas City. 
    Id. at 228, 287–88,
    312–33. As
    for necessity, once again, the affidavit listed the techniques agents had used and
    -4-
    those that were or would be unhelpful. 
    Id. at 317–44. By
    affidavit, the agents sought “authorization for the interception of wire,
    electronic pager and electronic cellular telephone communications to and from”
    TT No. 24. 
    Id. at 223. The
    affidavit did not request GPS data. However, the
    proposed order that the judge ultimately approved included an authorization for
    GPS data. 
    Id. at 194–96. Paragraph
    13(i), for example, ordered cell phone
    providers to “provide any and all . . . (GPS) tracking and/or pinging data during
    the progress of a call, on an ongoing and/or real time basis.” 
    Id. at 196. Through
    wiretap surveillance and GPS pinging of TT No. 24, agents were
    able to frustrate the organization’s attempt to send a courier to Kansas City. 
    Id. at 466. With
    the help of Kansas police, agents seized $69,800 from the courier’s
    vehicle and 1.68 kilograms of methamphetamine from a residence in Kansas. 
    Id. However, agents soon
    suspected that Mr. Barajas was using another phone, TT
    No. 26. II R. 93. Accordingly, on February 25, 2010, agents obtained a wiretap
    order for TT No. 26, attaching a proposed order and 161-page affidavit to the
    application. III R. 349–518. This affidavit listed newly intercepted
    conversations, including a conversation about the recent seizure in Kansas. 
    Id. at 465–66. Once
    again, the affidavit did not request GPS data, but the wiretap order
    authorized pinging. 
    Id. at 351, 516.
    On March 31, 2010, agents pinged TT No. 26, which showed the phone was
    located within a 5-meter radius of 4597 Pacific Rivera Way in San Diego,
    -5-
    California. II R. 272. On April 2, 2010, agents set up visual surveillance and
    observed a Toyota Camry entering the address. 
    Id. at 282, 285.
    Agents followed
    the Camry to a body shop, where they placed a call to TT No. 26. 
    Id. at 286–87. Mr.
    Barajas, the driver, did not pick up the phone, but later returned the call to
    the agents. 
    Id. at 287. Until
    this point, agents did not know that “Samy,” the user
    of TT No. 26, was Mr. Barajas. 
    Id. at 288. On
    April 28, 2010, agents pinged TT No. 26, which revealed the phone was
    located within 11 meters of the same San Diego address. 
    Id. at 347. One
    day
    later, agents pinged the phone and learned that it was located near a 24-Hour
    Fitness health club. 
    Id. Agents went to
    the location and found a champagne-
    colored Mercedes, a car they had seen at the San Diego address, in the parking
    lot. 
    Id. at 348. Agents
    arrested Mr. Barajas when he exited the club and found
    TT No. 26 in his pocket. 
    Id. at 351. On
    June 17, 2010, the government filed a four-count Indictment against Mr.
    Barajas. I R. 13–16. Prior to trial, Mr. Barajas moved to suppress all evidence
    obtained from the wiretaps of TT Nos. 1, 24, and 26, and all GPS and cell site
    location data from pinging TT Nos. 24 and 26. III R. 5–26. Mr. Barajas argued
    (1) that the wiretap applications failed to satisfy the necessity requirement of
    Title III; and (2) that the orders authorizing the acquisition of GPS and cell site
    location data were not supported by probable cause because the affidavits did not
    request GPS and cell site location data. 
    Id. -6- The district
    court held a hearing on the motion on July 8, 2011, and one
    month later, issued a memorandum and order denying the motion. 
    Id. at 564. On
    the first issue, the court concluded that the wiretaps were necessary because, inter
    alia, traditional techniques had proven inadequate. 
    Id. at 568. On
    the second
    issue, the court assumed without deciding that pinging is a search, and held the
    affidavits provided probable cause for the GPS data. 
    Id. at 570. The
    court
    explained that Mr. Barajas had failed to show “why the same evidence supporting
    probable cause with respect to the interception of communications would not also
    support probable cause with respect to the GPS . . . data.” 
    Id. at 570–71. The
    court added that, absent probable cause, the good-faith exception under United
    States v. Leon, 
    468 U.S. 897
    (1984), would apply. 
    Id. at 571–72. Mr.
    Barajas proceeded to trial, and on September 9, 2011, a jury convicted
    him of Counts 1–3 of the Indictment. I R. 116–17. The trial court sentenced him
    to life in prison on Counts 1 and 2 and four years on Count 3, to run concurrently,
    and to five years’ supervised release on Counts 1 and 2, and one year on Count 3,
    again to run concurrently. II R. 629. Mr. Barajas timely appealed. I R. 149.
    Discussion
    A.     Motion to Suppress Wiretap Evidence
    Mr. Barajas first challenges the district court’s order denying his motion to
    suppress conversations the government recorded pursuant to wiretaps on TT Nos.
    -7-
    1, 24, and 26. He argues the affidavits in support of the wiretaps did not establish
    necessity for the wiretaps as required under Title III of the Omnibus Crime
    Control and Safe Streets Act of 1968. See 18 U.S.C. §§ 2518(1)(c), 2518(3)(c).
    He specifically contends (1) that the affidavit for TT No. 1 did not show that
    traditional investigative techniques had been tried unsuccessfully or that they
    reasonably appeared to be unsuccessful if tried; and (2) that the affidavits for TT
    Nos. 24 and 26 were “boilerplate” repetitions of previous affidavits and failed to
    establish specific necessity. Aplt. Br. 18–25. We review for abuse of discretion a
    district court’s decision that a wiretap was necessary. United States v. Ramirez-
    Encarnacion, 
    291 F.3d 1219
    , 1222 & n.1 (10th Cir. 2002).
    Although the wiretaps were issued under California law, California wiretap
    law conforms to federal law. People v. Leon, 
    150 P.3d 207
    , 211 (Cal. 2007). The
    state procedure is incorporated under 18 U.S.C. § 2516(2). Thus, we apply
    federal standards to determine whether the evidence is admissible. United States
    v. Armendariz, 
    922 F.2d 602
    , 607 (10th Cir. 1990) (citing Elkins v. United States,
    
    364 U.S. 206
    (1960)).
    “A defendant bears the burden of proving that a wiretap is invalid once it
    has been authorized.” 
    Ramirez-Encarnacion, 291 F.3d at 1222
    . In order to obtain
    a wiretap, the government must show, among other things, that a wiretap is
    necessary. See 18 U.S.C. §§ 2518(1)(c), 2518(3)(c). The government must
    submit “a full and complete statement as to whether or not other investigative
    -8-
    procedures have been tried and failed or why they reasonably appear to be
    unlikely to succeed if tried.” 
    Id. § 2518(1)(c). Such
    measures include: “(1)
    standard surveillance; (2) questioning and interrogating witnesses or suspects,
    including through the use of grand jury proceedings; (3) search warrants; (4)
    infiltration of criminal groups by confidential informants and undercover agents;
    (5) pen registers; and (6) trap and trace devices.” United States v. Foy, 
    641 F.3d 455
    , 464 (10th Cir. 2011) (citation omitted). We do not require, however, that
    agents “exhaust all other conceivable investigative procedures before resorting to
    wiretapping.” 
    Id. (quoting United States
    v. Zapata, 
    546 F.3d 1179
    , 1186 (10th
    Cir. 2008)). Rather, we review the government’s actions “in a common sense
    fashion,” and consider “all the facts and circumstances in order to determine
    whether the government’s showing of necessity is sufficient to justify a wiretap.”
    United States v. Verdin-Garcia, 
    516 F.3d 884
    , 890 (10th Cir. 2008) (quotation
    omitted).
    We have thoroughly reviewed the affidavits for TT Nos. 1, 24, and 26, and
    find them sufficient to support the district court’s conclusion that the wiretaps
    were necessary. In each affidavit, Agent Ashton explains why traditional
    investigative techniques—e.g., confidential sources and visual surveillance—were
    ineffective and why other techniques—e.g., trash searches and search
    warrants—would prove ineffective if tried. See III R. 37–49, 317–44, 469–497.
    We have upheld wiretaps on similar showings. See 
    Foy, 641 F.3d at 464
    ; Zapata,
    
    -9- 546 F.3d at 1187
    ; 
    Verdin-Garcia, 516 F.3d at 890–92
    . Furthermore, in cases that
    involve a conspiracy, like this one, we have allowed wiretaps because the “goal of
    uncovering the size and scope of the conspiracy may justify the authorization of
    wiretaps.” 
    Foy, 641 F.3d at 464
    –65; see 
    Zapata, 546 F.3d at 1188
    (“[T]he
    government’s motivation in using the wiretaps was to gain insight into the full
    extent of the conspiracy.”). We will not disturb the district court’s finding that
    these wiretaps were necessary.
    As for Mr. Barajas’s argument that the affidavits for TT Nos. 24 and 26 are
    mere repetitions of previous affidavits, we disagree. These affidavits, 153- and
    161-pages respectively, are more than triple the length of the first affidavit, and
    more importantly, include new details about the organization. We have upheld
    wiretaps in ongoing investigations when they display, as they do here, a “new
    discussion of information learned, surveillance conducted, and so on, subsequent
    to the previous wiretap application.” 
    Verdin-Garcia, 516 F.3d at 892
    . Thus, the
    government met its burden in showing these wiretaps were necessary, and the
    district court correctly denied Mr. Barajas’s motion to suppress.
    B.     Motion to Suppress Evidence Obtained through GPS Pinging
    Mr. Barajas next challenges the district court’s order denying his motion to
    suppress GPS data the government obtained through pinging TT Nos. 24 and 26.
    He contends that pinging should not have been covered by the wiretap orders
    because there was no probable cause in the affidavits to support the search for
    - 10 -
    GPS data. Aplt. Br. 29. Here Mr. Barajas makes three arguments: (1) pinging is
    a search under the Fourth Amendment; (2) the wiretap affidavits did not provide
    probable cause for pinging because they failed to request GPS data; and (3) the
    good-faith exception to the exclusionary rule does not apply. 
    Id. at 27–31. Like
    the district court, we will assume without deciding that pinging is a search, 2 and
    proceed to Mr. Barajas’s second and third arguments.
    1.    Probable Cause
    When reviewing a district court’s denial of a motion to suppress, we view
    the evidence in the light most favorable to the prevailing party and accept the
    court’s factual findings unless they are clearly erroneous. United States v. Ruiz,
    
    664 F.3d 833
    , 838 (10th Cir. 2012). We review de novo the legal determination
    of reasonableness under the Fourth Amendment. 
    Id. When a search
    is conducted
    pursuant to a warrant, our review is more deferential: “we look to ensure that the
    judge had a substantial basis for concluding that the affidavit in support of the
    warrant established probable cause.” United States v. Burkhart, 
    602 F.3d 1202
    ,
    1205 (10th Cir. 2010) (quotation omitted). “An affidavit establishes probable
    cause for a search warrant if the totality of the information it contains establishes
    the fair probability that contraband or evidence of a crime will be found in a
    2
    This question is somewhat unsettled after the Supreme Court’s decision
    in United States v. Jones, 
    132 S. Ct. 945
    (2012). Only the Sixth Circuit has
    weighed in on this topic, holding that pinging is not a search under the Fourth
    Amendment. See United States v. Skinner, 
    690 F.3d 772
    , 777 (6th Cir. 2012).
    - 11 -
    particular place.” United States v. Roach, 
    582 F.3d 1192
    , 1200 (10th Cir. 2009)
    (quotation omitted). There must be a “nexus between . . . suspected criminal
    activity and the place to be searched[;]” a court may not “pil[e] hunch upon
    hunch.” 
    Id. (quotations omitted). “Sufficient
    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.” United States v. Cooper,
    
    654 F.3d 1104
    , 1124 (10th Cir. 2011) (quoting Illinois v. Gates, 
    462 U.S. 213
    ,
    239 (1983)).
    Mr. Barajas argues there is no probable cause for GPS pinging because the
    affidavits did not request GPS data. 3 Aplt. Br. 29. He contends the judge had no
    basis for concluding that evidence of the drug trafficking conspiracy would be
    found in the GPS data because the affidavits only indicated that “communications
    between the suspects” would contain evidence of the conspiracy. Aplt. R. Br.
    16–19 (emphasis omitted). The district court rejected this argument, finding that
    Mr. Barajas had failed to show “why the same evidence supporting probable
    cause with respect to the interception of communications would not also support
    probable cause with respect to the GPS . . . data.” III R. 570–71.
    3
    Mr. Barajas also suggests the orders were “a sort of writ of assistance . . .
    used in colonial times to authorize general searches.” Aplt. Br. 29. Although
    placed within an argument on probable cause, this point challenges the warrant’s
    particularity. Cf. United States v. Cooper, 
    654 F.3d 1104
    , 1124–27 (10th Cir.
    2011) (separate inquiries for probable cause and particularity). Because Mr.
    Barajas does not contest particularity, we do not consider it on appeal.
    - 12 -
    As an initial matter, we agree with the district court that nothing in the
    Fourth Amendment prevents us from considering whether certain facts in the
    affidavit support probable cause for the GPS data in addition to the wiretaps.
    Warrants frequently authorize a search of more than one place, and one set of
    facts may provide probable cause for both searches. See, e.g., United States v.
    Tisdale, 
    248 F.3d 964
    , 971 (10th Cir. 2001) (facts of attempted burglary provided
    probable cause to search defendant’s car and house); see also Groh v. Ramirez,
    
    540 U.S. 551
    , 557 (2004) (“The Fourth Amendment by its terms requires
    particularity in the warrant, not in the supporting documents.”). Moreover, we
    are mindful that “the Fourth Amendment’s commands, like all constitutional
    requirements, are practical and not abstract.” United States v. Ventresca, 
    380 U.S. 102
    , 108 (1965). “[C]ourts should not invalidate [a] warrant by interpreting
    the affidavit in a hypertechnical, rather than a commonsense, manner.” 
    Id. at 109. Thus,
    we reject Mr. Barajas’s suggestion that our probable cause determination
    hinges on the government’s failure to specifically request GPS data.
    However, it does not necessarily follow that the facts in the affidavit are
    sufficient for probable cause. We still must find the judge had a “substantial
    basis,” 
    Burkhart, 602 F.3d at 1205
    (quotation omitted), to conclude that
    “contraband or evidence of a crime will be found in a particular place,” 
    Roach, 582 F.3d at 1200
    (quotation omitted). The district court answered this question in
    the affirmative:
    - 13 -
    In this case, the affidavits established that defendant was involved in
    criminal activity and that he was using his cell phones (TT24 and
    TT26) in connection with that activity; thus, there was probable
    cause to believe that the fruits, instrumentalities, or evidence of
    drug-trafficking could be obtained by use of GPS . . . data for TT24
    and TT26.
    III R. 471. We, however, are not so sure that Mr. Barajas’s use of the phones for
    criminal activity is enough to authorize access to the GPS data. We require a
    “nexus” between the criminal activity and the place to searched, 
    Roach, 582 F.3d at 1200
    (quotation omitted), and demand that an affiant provide the judge with
    “[s]ufficient information,” 
    Cooper, 654 F.3d at 1124
    (quotation omitted). Absent
    an explanation of how Mr. Barajas’s location would reveal information about the
    workings of the conspiracy—or more accurately, Mr. Barajas himself—we cannot
    be certain that probable cause exists. Ultimately, we need not resolve this
    question because any deficiency in probable cause is cured by the good-faith
    exception.
    2.    Good-Faith Exception
    In United States v. Leon, 
    468 U.S. 897
    , 913 (1984), the Supreme Court
    created a good-faith exception to the usual rule that courts should exclude
    evidence obtained in violation of the Fourth Amendment. The good-faith
    exception provides that “evidence seized pursuant to the warrant need not be
    suppressed if the executing officer acted with an objective good-faith belief that
    the warrant was properly issued by a neutral magistrate.” United States v.
    - 14 -
    Campbell, 
    603 F.3d 1218
    , 1225 (10th Cir. 2010) (quotation omitted).
    Before delving into Leon, we note that we do not decide whether the good-
    faith exception applies in the Title III context, a question unresolved in our
    circuit, see United States v. Arrington, 
    216 F.3d 1088
    , 
    2000 WL 775576
    , at *6
    (10th Cir. June 16, 2000) (“[T]he applicability of Leon to the Title III context is
    unsettled . . . .”), and on which other circuits are split. 4 We need not wade in
    these murky waters because, as the parties conceded and as we agree, there is no
    Title III suppression mechanism for GPS data. 5 Our analysis starts and ends with
    Leon.
    Under Leon, we presume good-faith when an officer acts pursuant to a
    warrant unless one of “four contexts” apply. See 
    Burkhart, 602 F.3d at 1208
    4
    The Fourth, Eighth, and Eleventh Circuits have held the exception does
    apply, see United States v. Lomeli, 
    676 F.3d 734
    , 742 (8th Cir. 2012) (citing
    United States v. Moore, 
    41 F.3d 370
    , 376 (8th Cir. 1994)); United States v.
    Brewer, 204 F. App’x 205, 208 (4th Cir. 2006); United States v. Malekzadeh, 
    855 F.2d 1492
    , 1497 (11th Cir. 1988), and the Sixth Circuit has held that it does not,
    see United States v. Rice, 
    478 F.3d 704
    , 711–14 (2007).
    5
    In 1968, Congress passed Title III as part of the Omnibus Crime Control
    and Safe Streets Act, which provided requirements, procedures, and protections
    for electronic surveillance via wiretaps. Pub. L. No. 90-351, § 802, 82 Stat. 216.
    Evidence obtained in violation of Title III is suppressed. 18 U.S.C. § 2515. In
    1986, Congress amended Title III with the Electronic Communications Privacy
    Act, and clarified that only wire and oral communications are subject to statutory
    suppression. Pub. L. No. 99-508, § 101(c), 100 Stat. 1848, 1851; see 18 U.S.C.
    2518(10)(a) (“Any aggrieved person . . . may move to suppress the contents of
    any wire or oral communication . . . .”). GPS data is neither a wire nor oral
    communication, thus Title III suppression does not apply.
    - 15 -
    (quotation omitted). Mr. Barajas claims that one such context applies here—the
    “affidavit [was] so lacking in indicia of probable cause as to render official belief
    in its existence entirely unreasonable.” Aplt. R. Br. 27 (citing 
    Leon, 468 U.S. at 923
    ). He argues that the affidavit is “devoid of facts” as to why “communications
    between the suspects” might be found in the GPS data. 
    Id. at 29. The
    stumbling block to Mr. Barajas’s argument is that he construes the
    affidavit too technically, focusing on what the affidavit literally requests and
    where the government literally searched. But, as noted above, “the Fourth
    Amendment’s commands . . . are practical and not abstract.” 
    Ventresca, 380 U.S. at 108
    . We cannot limit our analysis to what the affidavit requests. Rather, we
    must ask whether the affidavit as a whole “establishes a minimally sufficient
    nexus between the illegal activity and the place to be searched.” United States v.
    Henderson, 
    595 F.3d 1198
    , 1202 (10th Cir. 2010) (quoting United States v.
    Gonzales, 
    399 F.3d 1225
    , 1230 (10th Cir. 2005)). Under this inquiry, we find the
    following “nexus”—“Samy” was using the phones for criminal activity but the
    government did not know who “Samy” was, thus access to the GPS data would
    help the government identify “Samy” and pursue the organization. We would
    prefer this explanation in the affidavit, but we impose a lower standard in good-
    faith determinations than we do with probable cause, only requiring “a minimal
    nexus” as compared to “a substantial nexus.” 
    Gonzales, 399 F.3d at 1230
    (citing
    - 16 -
    United States v. Carpenter, 
    360 F.3d 591
    , 596 (6th Cir. 2004) (en banc)). Thus,
    we cannot say the affidavit is “devoid of facts.”
    However, even if the affidavit is not “devoid of facts,” the good-faith
    exception will not apply when an officer “knows or should have known that a
    search warrant was invalid.” 
    Henderson, 595 F.3d at 1202
    (quotation omitted).
    We presume that law enforcement officials have a reasonable knowledge of the
    law. 
    Id. (citing Leon, 468
    U.S. at 919 n.20). Mr. Barajas suggests the agents
    knew or should have known the order was invalid because they knew (1) that GPS
    data is not typically intercepted pursuant to a wiretap order; and (2) that the
    affidavit did not request GPS data. Aplt. Br. 30; Aplt. R. Br. 30. We disagree.
    First, we have no reason to believe the government cannot obtain GPS data
    through a wiretap order. Assuming pinging is a search, the burden to obtain GPS
    data would be no greater than a wiretap—probable cause. But even if Mr. Barajas
    is correct, he cannot show the agents were on notice of this fact because the law
    on electronic surveillance is very much unsettled. See In re Application of U.S.
    for an Order Directing a Provider of Electronic Commc’n Serv. to Disclose
    Records to the Gov’t, 
    620 F.3d 304
    , 310 n.6, 311 (3d Cir. 2010) (noting the
    debate among courts on the procedure for electronic surveillance and taking “no
    position whether a request for GPS data is appropriate under a § 2703(d) order”);
    see also 
    Henderson, 595 F.3d at 1202
    (officers acted in good-faith when relying
    - 17 -
    on an affidavit based on a standardized form the court later determined did not
    establish probable cause); United States v. Rowland, 
    145 F.3d 1194
    , 1207 (10th
    Cir. 1998) (applying the good-faith exception to an anticipatory warrant when the
    law was unsettled). The agents’ knowledge of the gap between the affidavit and
    the order gives us more pause, but we cannot say this gap was intentional.
    Finally, in his reply brief, Mr. Barajas offers two additional reasons why
    the good-faith exception does not apply: (1) pinging turns cell phones into
    tracking devices, but the agents were not authorized to intercept transmissions
    from tracking devices; and (2) the search exceeded the scope of the warrant
    because the warrant permitted pinging during the progress of the call, but the
    agents pinged the cell phones at all times. Aplt. R. Br. 31–34. We will not
    address either argument, however, because Mr. Barajas did not raise either in his
    opening brief. See White v. Colorado, 
    82 F.3d 364
    , 366 n.4 (10th Cir. 1996)
    (court need not consider argument raised for the first time in appellate reply
    brief).
    AFFIRMED.
    - 18 -