United States v. Hilario Alfaro-Moncada ( 2010 )


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  •                                                                                [PUBLISH]
    IN THE UNITED STATES COURT OF APPEALS
    FOR THE ELEVENTH CIRCUIT           FILED
    ________________________ U.S. COURT OF APPEALS
    ELEVENTH CIRCUIT
    MAY 27, 2010
    No. 08-16442
    JOHN LEY
    ________________________                    CLERK
    D. C. Docket No. 08-20377-CR-UU
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    versus
    HILARIO ALFARO-MONCADA,
    Defendant-Appellant.
    ________________________
    Appeal from the United States District Court
    for the Southern District of Florida
    _________________________
    (May 27, 2010)
    Before CARNES and HULL, Circuit Judges, and LAWSON,* District Judge.
    CARNES, Circuit Judge:
    *
    Honorable Hugh Lawson, United States Senior District Judge for the Middle District of
    Georgia, sitting by designation.
    A lot of child pornography cases come through our court, and most of them
    present fairly routine issues. This one, however, brings in tow a Fourth
    Amendment issue with important implications for the national security of the
    United States. When a foreign cargo vessel enters this country and is subject to a
    border search, may the cabins of its crew members be searched for contraband
    without reasonable suspicion?
    I.
    On April 16, 2008, the MV RIO MIAMI, a foreign cargo ship, docked at the
    Antillean Marine inside Miami, Florida after traveling from the Dominican
    Republic. The Antillean Marine is located approximately three miles inland on
    the Miami River. It was the ship’s first port of entry into the United States. A
    couple of hours after the ship came into this country, officials with United States
    Customs and Border Protection, which is part of the Department of Homeland
    Security, went on board the ship to conduct an agricultural re-boarding.1 The
    1
    The agricultural re-boarding was the second inspection of the RIO MIAMI. Shortly after
    it arrived in the United States, Customs and Border Protection officials performed an initial
    boarding. During the initial boarding, a passenger processing team issued landing permits to the
    people on the RIO MIAMI, and an agricultural team completed paperwork clearing the ship’s
    food waste and garbage for unloading.
    2
    purpose of an agricultural re-boarding, or at least the primary purpose of the one in
    this case, is to inspect a ship for prohibited agricultural materials, including seeds.2
    The re-boarding of the RIO MIAMI was performed by a group of Customs
    and Border Protection officials called the Agricultural Enforcement Team.
    Among its seven members were five people trained in detecting threats to
    agriculture: three agricultural specialists, including Specialist Luis Meyer, plus a
    senior agricultural officer and a supervisor. The other two members were Customs
    and Border Protection officers, one of whom was Officer Ernesto Quiñones.3 The
    2
    The Homeland Security Act of 2002 transferred personnel and authority for agricultural
    border inspections from the United States Department of Agriculture to Customs and Border
    Protection. See 
    6 U.S.C. §§ 202
    (7), 231. Customs and Border Protection performs agricultural
    inspections at ports of entry in order to enforce various animal and plant protection laws. Ruth
    Ellen Wasem, Cong. Research Serv., Border Security: Inspections Practices, Policies, and Issues
    8–9 (2004); see § 231 (requiring the Department of Homeland Security to conduct agricultural
    import and entry inspection activities under the following laws: The Honeybee Act, 
    7 U.S.C. §§ 281
    –286; The Federal Seed Act, 
    7 U.S.C. §§ 1581
    –1586 (Title III); The Plant Protection Act, 
    7 U.S.C. §§ 7701
    –7786; The Animal Health Protection Act, 7 U.S.C. 8301–8322; The Lacey Act
    Amendments of 1981, 
    16 U.S.C. §§ 3371
    –3378; The Virus-Serum-Toxin Act, 
    21 U.S.C. §§ 151
    –159; and The Endangered Species Act of 1973, § 11, 
    16 U.S.C. § 1540
    ).
    3
    See Introducing the New CBP Agriculture Specialist, Customs & Border Protection
    Today, May 2004, http://www.cbp.gov/xp/CustomsToday/2004/May/agSpec.xml (Agricultural
    specialists “determine the admissibility of agriculture commodities while preventing the
    introduction of harmful pests, diseases, and potential agro/bioterrorism into the United States”);
    Jim Monke, Cong. Research Serv., Agroterrorism: Threats and Preparedness 17 (rev. 2006)
    (Agricultural specialists attend an 8-week training program at a Department of Agriculture
    facility on agricultural issues and 2-weeks of law enforcement classes); Fed. Law Enforcement
    Training Ctr., Dep’t of Homeland Sec., Catalog of Training Programs 145 (rev. 2007) (Customs
    and Border Protection “[o]fficers are trained in basic law enforcement skills, including: Anti-
    Terrorism; Detection of Contraband; . . . Immigration and Naturalization laws; U.S. Customs
    Export and Import laws; . . . [and] Examination of Cargo, Bags, and Merchandise.”); Gen.
    Accounting Office, Homeland Security: Management and Coordination Problems Increase the
    3
    Team met with the captain of the RIO MIAMI and told him that they would be
    inspecting the ship from bow to stern. After the Team inspected the bridge,
    Specialist Meyer and Officer Quiñones went below to inspect the crew members’
    cabins. The captain, who was with them, had a master key that unlocked the
    cabins, which were arranged like hotel rooms—one right beside another. The
    captain went from cabin to cabin, unlocking and opening each door so that the
    cabins could be searched. The master key would not open the cabin of Hilario
    Alfaro-Moncada, a citizen of El Salvador, who was the ship’s cook.
    While Specialist Meyer and Officer Quiñones waited in the hall, the captain
    went and got Alfaro-Moncada who unlocked his cabin door with his key and
    opened it. Specialist Meyer asked Alfaro-Moncada if the cabin was his, if he
    owned everything in it, and if Meyer could inspect it. After Alfaro-Moncada
    Vulnerability of U.S. Agriculture to Foreign Pests and Disease 15 (2006) (Customs and Border
    Protection officers receive 16 hours of training on agricultural issues); Introducing the New CBP
    Agriculture Specialist (noting that Customs and Border Protection officers perform different
    duties than Agricultural Specialists but “receive agriculture fundamentals training that [allows]
    them to recognize the signs of possible agriculture anomalies”).
    (In keeping with Eleventh Circuit Internal Operating Procedure 10, “Citation to Internet
    Materials in an Opinion,” under Federal Rule of Appellate Procedure 36, a copy of the internet
    materials cited in this opinion is available at this Court’s Clerk’s Office.)
    4
    answered “yes” to all three questions, Meyer entered the cabin and began
    inspecting it.4
    Alfaro-Moncada’s cabin was small and its only furniture was a couch, bed,
    and desk. Specialist Meyer started his inspection on the left side of the cabin
    where the couch was located. He searched some luggage and sifted through some
    clothes that were strewn on the couch. Finding nothing of interest, Meyer moved
    on to Alfaro-Moncada’s bed, which was positioned in the center of the cabin.
    Meyer lifted the mattress and rummaged through some drawers running down the
    side of the bed. Again finding nothing of interest, he moved on.
    Specialist Meyer’s efforts then focused on Alfaro-Moncada’s desk, which
    was located to the right of the bed and had a DVD player sitting on top of it.
    Meyer searched the top of the desk and then opened the desk’s only drawer.
    Inside the drawer were cases for CDs and DVDs. Meyer took some of them out of
    the drawer and began examining them. He looked at the covers of the cases. One
    of the DVD covers caught his attention because on that cover were ten images of
    what appeared to be young girls engaging in a variety of sexual acts. Suspecting
    4
    The government did not argue before the district court that the search was permissible
    because of Alfaro-Moncada’s consent, and it does not make that argument to us either. So we
    will not consider that possibility. See Wagner v. Daewoo Heavy Indus. Am. Corp., 
    314 F.3d 541
    , 542 (11th Cir. 2002) (en banc) (“[T]he general rule of this Circuit [is] that issues not raised
    before the district court will not be considered on appeal.”).
    5
    that the images were child pornography, Meyer called for Officer Quiñones who
    by that time had started searching another crew member’s nearby cabin.
    When Officer Quiñones arrived, Specialist Meyer handed him the DVD
    case and Quiñones examined it. Quiñones then asked Alfaro-Moncada whether it
    belonged to him and whether he knew what was on the DVD inside. Alfaro-
    Moncada admitted that it was his and that he knew there was pornography on the
    DVD and when asked what kind of pornography, he said “little girls.” Quiñones
    got Alfaro-Moncada’s permission to watch the DVD, but then continued the
    search of the desk drawer that Meyer had begun. He found a second DVD case
    that depicted young girls engaging in sex acts. The title of that DVD was
    “Vacanales del Porno,” which translates to “Porno Parties.” The actual DVD
    inside the case had Alfaro-Moncada’s initials—“H.A.M.”—on it, as well as “del
    X,” which translates to “triple X.”
    After finding the second DVD, Officer Quiñones asked Alfaro-Moncada if
    it also belonged to him and if Quiñones could watch it. Alfaro-Moncada again
    answered “yes” to both questions. Quiñones then used Alfaro-Moncada’s player
    to watch portions of both DVDs and confirmed that they contained child
    pornography. After that, Alfaro-Moncada’s cabin was secured and he was taken
    into custody.
    6
    II.
    A grand jury sitting in the Southern District of Florida returned an
    indictment charging Alfaro-Moncada with possession of child pornography, in
    violation of 
    18 U.S.C. § 2252
    (a)(4)(B). Two weeks after being indicted, he filed a
    motion to suppress the DVDs and his statements about them, contending that the
    search of his cabin had violated his Fourth Amendment rights. After conducting
    an evidentiary hearing, a magistrate judge reported that the search of Alfaro-
    Moncada’s cabin was a routine border search requiring no level of suspicion and
    recommended that the suppression motion be denied. The district court adopted
    the magistrate judge’s report and recommendation and denied the motion.
    III.
    Alfaro-Moncada’s trial took only a day. The government presented the
    testimony of Specialist Meyer and Officer Quiñones and introduced into evidence,
    among other things, five still images taken from the DVDs. Alfaro-Moncada
    objected to the images’ admission, protesting that he had stipulated that the DVDs
    contained child pornography.
    Alfaro-Moncada took the stand and testified that he bought both DVDs at a
    flea market in Colombia. An apparently indiscriminate shopper, Alfaro-Moncada
    claimed that he purchased the DVDs without knowing what they were or really
    7
    looking at them. He said that it was not until he got back to the ship and watched
    parts of them that he realized that they contained child pornography. Once he
    realized what they were, he tossed them in his desk drawer planning to throw them
    overboard later. He testified that the reason he never got rid of the DVDs was that
    he had gotten busy, rough seas had made him ill, and he had forgotten about them.
    Rejecting Alfaro-Moncada’s story, the jury found him guilty as charged of
    possession of child pornography.
    At sentencing, the district court determined that Alfaro-Moncada’s base
    offense level was 18. See U.S.S.G. § 2G2.2(a)(1). That was enhanced two points
    because the DVDs depicted children under the age of twelve, see § 2G2.2(b)(2),
    four points because the DVDs portrayed “sadistic or masochistic conduct or other
    depictions of violence,” see § 2G2.2(b)(4), and five more points because the
    DVDs contained more than 600 images of child pornography, see §
    2G2.2(b)(7)(D). The result was a total offense level of 29. Because he had no
    criminal record, Alfaro-Moncada had a criminal history category of I. See
    U.S.S.G. Ch. 5 Pt. A. The resulting guidelines range was 87 to 108 months
    imprisonment. See id. The district court imposed a sentence of 87 months in
    prison and 10 years of supervised release.
    8
    IV.
    Alfaro-Moncada contends that: (1) his motion to suppress should have been
    granted because the search of his cabin violated his Fourth Amendment rights; (2)
    there was insufficient evidence to support his conviction; (3) the district court
    erred in allowing the government to show five still images from the DVDs to the
    jury after he had stipulated that they contained child pornography; and (4) his 87-
    month sentence is unreasonable.
    A.
    Searches conducted at the border are analyzed in two steps. See United
    States v. Ramsey, 
    431 U.S. 606
    , 
    97 S.Ct. 1972
     (1977). The first step is to
    determine if the search was authorized by statute, see 
    id.
     at 611–15; 
    97 S.Ct. at
    1976–78, and, if so, the second step is to decide if the search was reasonable under
    the Fourth Amendment, see 
    id.
     at 615–16; 
    97 S.Ct. at 1978
    .
    The government contends that the Agricultural Enforcement Team was
    authorized by 
    19 U.S.C. § 1581
    (a) to search Alfaro-Moncada’s cabin. That statute
    provides that any “officers of the customs” may “at any time go on board of any
    vessel . . . at any place in the United States” and “search the vessel . . . and every
    part thereof.” 
    19 U.S.C. § 1581
    (a). An “officer of the customs” includes “any
    officer of the United States Customs Service . . . or any agent or other person . . .
    9
    authorized by law . . . to perform any duties of an officer of the Customs Service.”
    
    Id.
     § 1401. The Homeland Security Act of 2002 transferred all customs functions,
    with the exception of certain revenue-related ones, to the Department of Homeland
    Security. See 
    6 U.S.C. §§ 203
    (1), 212(a)(1). Customs border activities are now
    performed by United States Customs and Border Protection, which is part of the
    Department of Homeland Security. See Ruth Ellen Wasem, Cong. Research Serv.,
    Border Security: Inspections Practices, Policies, and Issues 6 (2004). The
    members of the Agricultural Enforcement Team, all employees of Customs and
    Border Protection, were thus “officer[s] of the customs” within the meaning of §
    1581(a). The Team boarded the RIO MIAMI while it was docked three miles up
    the Miami River, which is a “place in the United States,” and Alfaro-Moncada’s
    cabin was a part of the ship. See § 1581(a) (allowing officer of the customs to
    “search the vessel . . . and every part thereof”). The Team therefore had statutory
    authority under § 1581(a) to search the cabin.
    Of course, “no Act of Congress can authorize a violation of the
    Constitution,” Almeida-Sanchez v. United States, 
    413 U.S. 266
    , 272, 
    93 S.Ct. 2535
    , 2539 (1973), which brings us to the second step of the Ramsey analysis:
    whether the statutorily authorized search violated the Fourth Amendment. Neither
    the Supreme Court nor this Court has ever addressed § 1581(a)’s constitutionality
    10
    in the circumstances presented by this case. The Supreme Court has, however,
    upheld the constitutionality of § 1581(a) to the extent that it authorizes customs
    officers, without any level of suspicion, to board vessels located in waters
    providing ready access to the open seas and conduct a document inspection. See
    United States v. Villamonte-Marquez, 
    462 U.S. 579
    , 588–593, 
    103 S. Ct. 2573
    ,
    2579–2582 (1983). In doing so, the Supreme Court noted the broad grant of
    authority that § 1581(a) confers on customs officers but expressly limited its
    decision to document inspections. See id. at 581 n.2, 
    103 S.Ct. at
    2575 n.2. More
    recently, the Supreme Court held that § 1581(a) authorizes customs officers,
    without any level of suspicion, to remove, disassemble, and reassemble an
    automobile’s gas tank to look for contraband while the automobile is located at a
    secondary inspection area at the border. See United States v. Flores-Montano, 
    541 U.S. 149
    , 153–56, 
    124 S.Ct. 1582
    , 1585–87 (2004).
    When the RIO MIAMI, including Alfaro-Moncada’s cabin, was searched, it
    was docked at the functional equivalent of the border—making this a border
    search case. See United States v. Moreno, 
    778 F.2d 719
    , 721 (11th Cir. 1985)
    (noting that the point where a ship first docks after arriving from a foreign country
    is the functional equivalent of the border). If the Agricultural Enforcement Team
    had boarded the RIO MIAMI to perform a document inspection, Villamonte-
    11
    Marquez probably would control, and if the Team had searched equipment or
    cargo on the vessel the Flores-Montano decision probably would control. What
    distinguishes this case from those two and makes it more difficult is that the search
    was of living quarters on a vessel. The issue is whether a search without
    reasonable suspicion of a crew member’s living quarters on a foreign cargo vessel
    that is entering this country is unreasonable for Fourth Amendment purposes.
    To determine the reasonableness of a border search, or of any search for that
    matter, we weigh “its intrusion on [an] individual’s Fourth Amendment interests
    against its promotion of legitimate governmental interests.” United States v.
    Denson, 
    574 F.3d 1318
    , 1338 (11th Cir. 2009) (quotation marks omitted); see also
    United States v. Richards, 
    638 F.2d 765
    , 770 (5th Cir. Mar. 1981)5 (“Because the
    Fourth Amendment expressly prohibits only unreasonable warrantless searches, it
    patently incorporates a balancing test, weighing in one measure the level of
    intrusion into individual privacy and in the other the public interest to be
    served.”); United States v. Himmelwright, 
    551 F.2d 991
    , 994 (5th Cir. 1977)
    (same).
    5
    We adopted as binding precedent all Fifth Circuit decisions prior to October 1, 1981.
    Bonner v. City of Prichard, 
    661 F.2d 1206
    , 1209 (11th Cir. 1981) (en banc).
    12
    Even though it does involve weighing individual privacy and public
    interests, “the Fourth Amendment’s balance of reasonableness is qualitatively
    different at the international border than in the interior.” United States v. Montoya
    de Hernández, 
    473 U.S. 531
    , 538, 
    105 S.Ct. 3304
    , 3309 (1985). At the border, an
    individual has a lesser expectation of privacy, the government has a greater
    interest in searching, and the balance between the interests of the government and
    the privacy right of the individual is struck more favorably to the government. 
    Id.
    at 539–40, 
    105 S.Ct. at
    3309–10 (citations omitted). The United States’
    paramount interest in conducting searches at its borders is national self-protection.
    See Flores-Montano, 
    541 U.S. at 153
    , 
    124 S.Ct. at 1586
     (“It is axiomatic that the
    United States, as sovereign, has the inherent authority to protect, and a paramount
    interest in protecting, its territorial integrity.”); 
    id. at 152
    , 
    124 S.Ct. at 1585
     (“The
    Government’s interest in preventing the entry of unwanted persons and effects is
    at its zenith at the international border.”); Carroll v. United States, 
    267 U.S. 132
    ,
    154, 
    45 S.Ct. 280
    , 285 (1925) (“Travelers may be so stopped in crossing an
    international boundary because of national self-protection reasonably requiring
    one entering the country to identify himself as entitled to come in, and his
    belongings as effects which may be lawfully brought in.”); see also Bourgeois v.
    Peters, 
    387 F.3d 1303
    , 1315 (11th Cir. 2004) (noting that transborder travel is a
    13
    context in which compelling state interests diminish an individual’s expectation of
    privacy); United States v. Chemaly, 
    741 F.2d 1346
    , 1350 (11th Cir. 1984)
    (observing that the Fourth Amendment is relaxed at the border “[b]ecause of the
    strong policy of national self protection”).
    Because of the United States’ strong interest in national self-protection,
    “[r]outine searches of the persons and effects of entrants are not subject to any
    requirement of reasonable suspicion, probable cause, or warrant.” Montoya de
    Hernández, 
    473 U.S. at 538
    ; 
    105 S.Ct. at 3309
    ; see also Denson, 
    574 F.3d at 1339
    (“It is beyond peradventure that searches made at the border, pursuant to the long-
    standing right of the sovereign to protect its territorial integrity, renders
    preliminary searches and seizures per se reasonable . . . . Entrants, therefore, are
    subject to search even in the absence of reasonable suspicion, probable cause, or
    warrant.” (citations omitted)). A person may be subjected to a pat-down search or
    frisk. See United States v. Ramos, 
    645 F.2d 318
    , 322 (5th Cir. Unit B 1981) (“[A]
    routine, non-offensive pat-down or frisk made at the border is justified [solely] by
    a traveler’s request to cross our national border.”). A traveler’s luggage may be
    inspected. See United States v. Rice, 
    635 F.2d 409
    , 410 (5th Cir. Unit B 1981)
    (noting that no articulable suspicion is required to conduct a routine search of
    luggage at the border). Incoming international mail may be examined. See United
    14
    States v. Pringle, 
    576 F.2d 1114
    , 1117–18 (5th Cir. 1978) (upholding
    suspicionless search of incoming international mail). Vehicles may be searched.
    See United States v. Emmens, 
    893 F.2d 1292
    , 1294 (11th Cir. 1990) (“[N]either a
    warrant nor any level of suspicion is required to search vehicles, including aircraft,
    arriving in the United States.”). All without any level of suspicion. Those
    searches are “reasonable simply by virtue of the fact that they occur at the border.”
    Denson, 
    574 F.3d at 1339
    ; see also Nat’l Treasury Employees Union v. Von Raab,
    
    489 U.S. 656
    , 665, 
    109 S.Ct. 1384
    , 1390 (1989) (“[N]either a warrant nor probable
    cause, nor, indeed, any measure of individualized suspicion, is an indispensable
    component of reasonableness in every circumstance.”); Skinner v. Ry. Labor
    Executives’ Ass’n, 
    489 U.S. 602
    , 624, 
    109 S.Ct. 1402
    , 1417 (1989) (“In limited
    circumstances, where the privacy interests implicated by the search are minimal,
    and where an important governmental interest furthered by the intrusion would be
    placed in jeopardy by a requirement of individualized suspicion, a search may be
    reasonable despite the absence of such suspicion.”); Ramsey, 
    431 U.S. at 619
    , 
    97 S.Ct. at 1980
     (“Border searches, then, 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.”).
    15
    Even at the border, however, reasonable suspicion is required for highly
    intrusive searches of a person’s body such as a strip search or an x-ray
    examination. See, e.g., Brent v. Ashley, 
    247 F.3d 1294
    , 1302 (11th Cir. 2001)
    (concluding that strip search of airline passenger arriving at Miami International
    Airport from Nigeria without reasonable suspicion that the passenger was
    smuggling drugs violated the Fourth Amendment); United States v. McMurray,
    
    747 F.2d 1417
    , 1420 (11th Cir. 1984) (“A strip search requires a particularized
    ‘reasonable suspicion.’ This standard is met ‘by a showing of articulable facts
    which are particularized as to the person and as to the place to be searched.’”
    (citations omitted)); United States v. Mosquera-Ramirez, 
    729 F.2d 1352
    , 1353
    (11th Cir. 1984) (“[A]n x-ray search performed at the border is reasonable if based
    on the same amount of suspicion required for a strip search.”); United States v. De
    Gutierrez, 
    667 F.2d 16
    , 19 (11th Cir. 1982) (“The well-established rule in this
    circuit is that a strip search conducted at the border meets the requirements of the
    fourth amendment if it is supported by ‘reasonable suspicion’ on the part of the
    customs agent.”).6
    6
    In Montoya de Hernández, the Supreme Court held that “the detention of a traveler at the
    border, beyond the scope of a routine customs search and inspection, is justified at its inception if
    customs agents, considering all the facts surrounding the traveler and her trip, reasonably suspect
    that the traveler is smuggling contraband in her alimentary canal.” 
    473 U.S. at 541
    , 
    105 S.Ct. at 3310
    . The Court did not decide “what level of suspicion, if any, is required for nonroutine
    border searches such as strip, body cavity, or involuntary x-ray searches.” 
    Id.
     at 541 n.4, 105
    16
    While Alfaro-Moncada was not subjected to a highly intrusive search of his
    body, his cabin was searched and that implicates significant Fourth Amendment
    principles. A cabin is a crew member’s home—and a home “receives the greatest
    Fourth Amendment protection.” See United States v. McGough, 
    412 F.3d 1232
    ,
    1236 (11th Cir. 2005); see also Kyllo v. United States, 
    533 U.S. 27
    , 31, 
    121 S.Ct. 2038
    , 2041 (2001) (“‘At the very core’ of the Fourth Amendment ‘stands the right
    of a man to retreat into his own home and there be free from unreasonable
    governmental intrusion.’” (quoting Silverman v. United States, 
    365 U.S. 505
    , 511,
    
    81 S.Ct. 679
    , 683 (1961))); Payton v. New York, 
    445 U.S. 573
    , 585, 
    100 S.Ct. 1371
    , 1379 (1980) (“[T]he physical entry of the home is the chief evil against
    which the wording of the Fourth Amendment is directed.” (quotation marks
    omitted)); 
    id. at 590
    , 
    100 S.Ct. at 1382
     (“[T]he Fourth Amendment has drawn a
    firm line at the entrance to the house.”).
    In none of those decisions discussing the Fourth Amendment protections
    afforded to the home was it at the border, and on that critical distinction this case
    turns. A home in a fixed location within the United States cannot be used as a
    means to transport into this country contraband or weapons of mass destruction
    S.Ct. at 3310 n.4. We have set that level of suspicion at reasonable suspicion. See Mosquera-
    Ramirez, 
    729 F.2d at 1353
    ; United States v. Vega-Barvo, 
    729 F.2d 1341
    , 1345 (11th Cir. 1984).
    17
    that threaten national security. A crew member’s cabin, like the rest of the ship on
    which it is located, can and does pose that threat. See Dep’t of Homeland Sec.,
    The National Strategy for Maritime Security 4 (2005) (“Vessels can be used to
    transport powerful conventional explosives or [weapons of mass destruction] for
    detonation in a port. . . .”); John F. Frittelli, Cong. Research Serv., Port and
    Maritime Security: Background and Issues for Congress 1 (2005) (“[S]ecurity
    experts are worried that the maritime transportation system could be used by
    terrorists to smuggle personnel, weapons of mass destruction, or other dangerous
    materials into the United States.”); Gen. Accounting Office, Homeland Security:
    Process for Reporting Lessons Learned from Seaport Exercises Needs Further
    Attention 1 (2005) (“Seaports are vulnerable entry points for bombs or other
    devices smuggled into cargo ships. . . .”); JayEtta Z. Hecker, Gen. Accounting
    Office, Port Security: Nation Faces Formidable Challenges in Making New
    Initiatives Successful 3 (2002) (“Drugs and illegal aliens are routinely smuggled
    into this country, not only in small boats but also hidden among otherwise
    legitimate cargoes on large commercial ships. These same pathways are available
    for exploitation by a terrorist organization or any nation or person wishing to
    attack [the United States] surreptitiously.”). That threat is the reason why “the
    Fourth Amendment balance between the interests of the Government and the
    18
    privacy right of the individual is . . . struck much more favorably to the
    Government at the border.” Montoya de Hernández, 
    473 U.S. at 540
    , 105 S.Ct at
    3310; see also Carroll, 
    267 U.S. at 154
    , 
    45 S.Ct. at 285
    ; Flores-Montano, 
    541 U.S. at 152
    , 
    124 S.Ct. at 1585
    .
    The concern that contraband or worse will be smuggled into this country has
    special force in modern times. At the dawn of the atomic age, Churchill warned
    that “[t]he Dark Ages may return—the Stone Age may return on the gleaming
    wings of science; and what might now shower immeasurable material blessings
    upon mankind may even bring about its total destruction.”7 The gleaming wings
    of science have brought us readily transportable chemical and biological weapons,
    and there are reports of suitcase-size nuclear bombs, all of which could be used by
    terrorists to commit murder on an unimaginable scale and to inflict devastating
    economic injury. See, e.g., Patrick Barriot, Nuclear and Radiological Weapons, in
    Treating Victims of Weapons of Mass Destruction: Medical, Legal, and Strategic
    Aspects 188 (Patrick Barriot & Chantal Bismuth eds., 2008) (noting that U.S.
    officials fear that terrorists could transport a suitcase bomb into one of the nation’s
    7
    Winston Churchill, The Sinews of Peace, Address at Westminster College (Mar. 5,
    1946), reprinted in William Safire, Lend Me Your Ears: Great Speeches in History 871 (2d ed.
    1997).
    19
    ports via a maritime route); Gen. Accounting Office, Maritime Security: Better
    Planning Needed to Help Ensure an Effective Port Security Assessment Program 4
    (2004) (“Ports present attractive targets for terrorists: they are sprawling, easily
    accessible by water and land, close to crowded metropolitan areas, and interwoven
    with complex transportation networks.”); Hecker, Port Security, at 4 (“A terrorist
    act involving chemical, biological, radiological, or nuclear weapons at one of [the
    nation’s] seaports could result in extensive loss of lives, property, and business;
    affect the operations of harbors and the transportation infrastructure (bridges,
    railroads, and highways) within the port limits; cause extensive environmental
    damage; and disrupt the free flow of trade.”); Jonathan Medalia, Cong. Research
    Serv., Terrorist Nuclear Attacks on Seaports: Threat and Response 1 (2005) (“A
    terrorist Hiroshima-sized nuclear bomb (15 kilotons, the equivalent of 15,000 tons
    of TNT) detonated in a port would destroy buildings out to a mile or two; start
    fires . . . ; spread fallout over many square miles; disrupt commerce; and kill many
    people.”); Nat’l Comm’n on Terrorist Attacks upon the U.S., The 9/11
    Commission Report 391 (2004) (“Opportunities to do harm are as great, or greater,
    in maritime or surface transportation” as in commercial aviation). Given the
    dangers we face, the paramount national interest in conducting border searches to
    protect this nation and its people makes it unreasonable to require any level of
    20
    suspicion to search any part of a foreign cargo vessel coming into this country.
    Crew members’ cabins are no exception because, like any other part of a vessel,
    they can be used to smuggle in weapons of mass destruction, illegal devices, or
    other contraband.
    Of course, this is an “other contraband” case. The Agricultural Enforcement
    Team that searched Alfaro-Moncada’s cabin was looking for agricultural
    contraband and found child pornography. Even limiting our analysis to the search
    for agricultural contraband, however, important national interests are still
    involved. See Montoya de Hernández, 
    473 U.S. at 544
    , 
    105 S.Ct. at 3312
     (“At the
    border, customs officials have more than merely an investigative law enforcement
    role. They are also charged, along with immigration officials, with protecting this
    Nation from entrants who may bring anything harmful into this country, whether
    that be communicable diseases, narcotics, or explosives.” (emphasis added)).
    Agricultural products can carry pests and diseases that “can harm the economy, the
    environment, plant and animal health, and public health.” Gen. Accounting
    Office, Homeland Security: Management and Coordination Problems Increase the
    Vulnerability of U.S. Agriculture to Foreign Pests and Disease 1 (2006); see also
    Peyton Ferrier, U.S. Dep’t of Agric., The Economics of Agricultural and Wildlife
    Smuggling iv (2009) (“Banned agricultural goods can carry diseases, pathogens,
    21
    foreign organisms, or contaminants that threaten the health of humans, animals,
    and plants; the environment; and the trade status of U.S. exports.”); Gen.
    Accounting Office, Homeland Security: Management and Coordination Problems,
    at 37 (“The global marketplace and increased imports of agricultural products and
    international travelers into the United States have increased the number of
    pathways for the movement and introduction of foreign, invasive agricultural pests
    and diseases, such as avian influenza and foot-and-mouth disease.”); Gen.
    Accounting Office, Homeland Security: Much is Being Done to Protect
    Agriculture from a Terrorist Attack, but Important Challenges Remain 7 (2005)
    (“Agricultural inspections at ports of entry [are] the first line of defense against the
    entry of foreign pests and diseases” into the United States). The fact that
    agricultural inspections are now performed by the Department of Homeland
    Security underscores the fact that halting the entry of agricultural contraband into
    this country is a component of national security.
    Stopping agricultural pests and diseases from entering this country is an
    essential function of homeland security; when they have come across our borders,
    extensive damage has resulted. See Daniel Bertoni, Gen. Accounting Office,
    Invasive Forest Pets: Recent Infestations and Continued Vulnerabilities at Ports of
    Entry Place U.S. Forests at Risk 11 (2006) (The infestations of the Asian
    22
    longhorned beetle, emerald ash borer, and P.ramorum in the United States “began
    when the pests passed through U.S. ports of entry, hitchhiking in vehicles, cargo,
    or travelers’ personal belongings. That pests have become established indicates
    that the first line of defense at the border has been breeched over the years.”); id.
    at 6 (Efforts to eradicate the Asian longhorned beetle in New Jersey, New York,
    and Illinois have resulted in the removal of 8,000 infested trees); id. (Cost of
    removing and replacing trees infested by emerald ash borer estimated to reach $7
    billion over 25-year period); id. at 6–7 (P.ramorum “has killed tens of thousands
    of trees and led to the destruction of over 1 million nursery plants.”); Homeland
    Security: Much is Being Done to Protect Agriculture from a Terrorist Attack, at 47
    (From 1995 to 2005, Florida lost 2.1 million citrus trees because of the spread of
    citrus canker, a highly contagious bacterial disease); Lawrence J. Dyckman, Gen.
    Accounting Office, Bioterrorism: A Threat to Agriculture and the Food Supply 4
    (2003) (“[T]he United Kingdom has estimated that its outbreak of foot-and-mouth
    disease resulted in over $10 billion (U.S.) in losses to tourism and the food and
    agriculture sectors and the slaughter of over 4 million animals. Estimates of direct
    costs for a similar outbreak in the United States run has high as $24 billion with
    the destruction of about 13 million animals.”); id. at 6 (“Foot-and-mouth disease
    23
    can be carried on the shoes of international passengers and the packages they
    carry, in international mail, and in garbage from international carriers.”).
    Not only is the national interest in searching for agricultural contraband
    coming into this country strong, but any expectation of privacy a crew member has
    in his living quarters is weaker when those quarters are brought to the border of
    this country. Montoya de Hernández, 
    473 U.S. at 539
    , 
    105 S.Ct. at
    3309–10; see
    also United States v. Hidalgo-Gato, 
    703 F.2d 1267
     (11th Cir. 1983) (“On crossing
    a border the individual is on notice that a search may be made, and his privacy is
    arguably less invaded by such search.” (quotation and other marks omitted)).
    There are no inspection-free zones on a foreign cargo vessel at the border, just as
    there are none in an airplane or a motor vehicle. Someone who travels to the
    border in a recreational vehicle that also serves as his home could not reasonably
    expect that it would not be subject to search. The same is true of a crewman
    whose cabin, along with the rest of his ship, travels three miles up the Miami
    River to dock.
    For all of these reasons, we conclude that the suspicionless search of Alfaro-
    Moncada’s cabin on the MV RIO MIAMI, a foreign cargo ship, while it was
    docked at the Antillean Marine on the Miami River, was not a violation of the
    Fourth Amendment.
    24
    B.
    Alfaro-Moncada attacks his conviction and sentence on other grounds. He
    contends that there was insufficient evidence to support his conviction.
    Specifically, Alfaro-Moncada argues that the government failed to prove the
    knowledge element of 
    18 U.S.C. § 2252
    (a)(4)(B)—that he “knowingly” possessed
    child pornography. He asserts that the evidence showed that he bought the DVDs
    by accident and kept them because of forces beyond his control, namely his
    forgetful memory and churning stomach.
    Section 2252(a)(4)(B) criminalizes the knowing possession of child
    pornography. That section provides:
    Any person who . . . knowingly possesses, or knowingly accesses
    with intent to view, 1 or more books, magazines, periodicals, films,
    video tapes, or other matter which contain any visual depiction that . .
    . has been shipped or transported using any means or facility of
    interstate or foreign commerce or in or affecting interstate or foreign
    commerce, or which was produced using materials which have been
    mailed or so shipped or transported, by any means including by
    computer, if . . . the producing of such visual depiction involves the
    use of a minor engaging in sexually explicit conduct; and . . . such
    visual depiction is of such conduct . . . shall be punished as provided
    in [§ 2252(b)(2)].
    
    18 U.S.C. § 2252
    (a)(4)(B). To satisfy the knowledge element of § 2552(a)(4)(B),
    the government had to prove that Alfaro-Moncada knew the DVDs in his
    possession showed minors engaging in sexually explicit conduct. See United
    25
    States v. X-Citement Video, Inc., 
    513 U.S. 64
    , 78, 
    115 S.Ct. 464
    , 472 (1994)
    (concluding that “the term ‘knowingly’ in § 2252 extends both to the sexually
    explicit nature of the material and to the age of the performers”); United States v.
    Lacy, 
    119 F.3d 742
    , 747 (9th Cir. 1997) (“Possession of [DVDs] is ordinarily
    lawful. The presence of illegal images on the [DVDs] is a crucial element
    separating legal innocence from wrongful conduct. Accordingly, a defendant may
    be convicted under § 2252(a)(4)(B) only upon a showing that he knew the matter
    in question contained an unlawful visual depiction.” (quotation marks and
    citations omitted)); see also United States v Woodruff, 
    296 F.3d 1041
    , 1047 (11th
    Cir. 2002) (“We have long held that the term ‘knowingly’ means that the act was
    performed voluntarily and intentionally, and not because of a mistake or
    accident.”).
    Alfaro-Moncada’s sufficiency challenge is free of anything resembling
    merit. The government introduced into evidence the covers of the DVD cases
    found in his desk drawer by Specialist Meyer and Officer Quiñones. On both of
    those covers there were photos of young girls engaging in sex acts. Although
    Alfaro-Moncada testified that he had bought the DVDs without knowing that they
    contained child pornography, the jury was free to reject that testimony and believe
    the opposite to be true. See United States v. Williams, 
    390 F.3d 1319
    , 1326 (11th
    26
    Cir. 2004) (“Where some corroborative evidence of guilt exists for the charged
    offense . . . and the defendant takes the stand in h[is] own defense, the
    [d]efendant’s testimony, denying guilt, may establish, by itself, elements of the
    offense. This rule applies with special force where the elements to be proved for a
    conviction include highly subjective elements [such as] the defendant’s intent or
    knowledge.” (quotation marks and citations omitted)). Moreover, Alfaro-
    Moncada admitted in his testimony that he had looked at the covers of the DVD
    cases when he got back to the RIO MIAMI and watched a “little bit” of the DVDs
    inside. At that point, by his own admission, he knew that he was in possession of
    child pornography. His own testimony therefore established the knowledge
    element of § 2252(a)(4)(B).
    Alfaro-Moncada did testify that he intended to throw the DVDs overboard
    after he discovered that they contained child pornography, but the jury was free
    not to believe him. See id. Even taking his testimony as true, once he discovered
    the DVDs contained child pornography and made the decision to put them in his
    desk drawer, he was in knowing possession of them. Although Alfaro-Moncada
    seems to think otherwise, the grace period for disposing of child pornography after
    discovering it is not an extended one. There was plenty of evidence to support the
    conviction.
    27
    C.
    Alfaro-Moncada also contends that the district court erred in allowing the
    government to show five still images of child pornography to the jury. Since he
    had stipulated that the DVDs contained child pornography, he argues that showing
    the images to the jury was done only to prejudice and inflame the minds of the
    jurors and was improper under Federal Rule of Evidence 403. Rule 403 permits a
    district court to exclude relevant evidence when its probative value is substantially
    outweighed by its unfairly prejudicial nature. See Fed. R. Evid. 403 (“Although
    relevant, evidence may be excluded if its probative value is substantially
    outweighed by the danger of unfair prejudice, confusion of the issues, or
    misleading the jury, or by considerations of undue delay, waste of time, or
    needless presentation of cumulative evidence.”). But Rule 403, we have
    cautioned, “is an extraordinary remedy which the district court should invoke
    sparingly, and the balance should be struck in favor of admissibility.” United
    States v. Dodds, 
    347 F.3d 893
    , 897 (11th Cir. 2003) (quotation and other marks
    omitted). We have also said that “in reviewing issues under Rule 403, we look at
    the evidence in a light most favorable to its admission, maximizing its probative
    value and minimizing its undue prejudicial impact.” 
    Id.
     (quotation and other
    marks omitted).
    28
    Admission of the five still images from the DVDs served valid purposes.
    See Old Chief v. United States, 
    519 U.S. 172
    , 190, 
    117 S.Ct. 644
    , 655 (1997).
    Those images proved that the DVDs actually contained child pornography,
    although it is true that Alfaro-Moncada stipulated to that fact. See 
    id.
     at 186–87;
    
    117 S.Ct. at 653
     (“[The] standard rule [is] that the prosecution is entitled to prove
    its case by evidence of its own choice, or, more exactly, that a criminal defendant
    may not stipulate or admit his way out of the full evidentiary force of the case as
    the Government chooses to present it.”). They also tended to show that Alfaro-
    Moncada knew he was in possession of child pornography, a fact that he did not
    stipulate. Even if showing the images to the jury created some risk of injecting
    emotions into the jury’s decision-making, see 
    id. at 180
    , 
    117 S.Ct. at 650
    , it was
    not an abuse of discretion for the district court to decide that the risk did not
    substantially outweigh the still images’ probative value. That is especially true
    since the jury was only shown a small number of the images on the DVDs—only 5
    out of 4,650. See Dodds, 
    347 F.3d at 899
     (finding no abuse of discretion where
    images had multiple probative purposes, the district court took precautions to
    prevent unfair prejudice, and only 66 of 3,400 images were shown to the jury).
    29
    D.
    Alfaro-Moncada also challenges the reasonableness of his 87-month
    sentence. “We review sentencing decisions only for abuse of discretion, and we
    use a two-step process.” United States v. Shaw, 
    560 F.3d 1230
    , 1237 (11th Cir.
    2009). First, we must “ensure that the district court committed no significant
    procedural error, such as failing to calculate (or improperly calculating) the
    Guidelines range, treating the Guidelines as mandatory, failing to consider the §
    3553(a) factors, selecting a sentence based on clearly erroneous facts, or failing to
    adequately explain the chosen sentence-including an explanation for any deviation
    from the Guidelines range.” Id. (quoting Gall v. United States, 
    552 U.S. 38
    , 51,
    
    128 S.Ct. 586
    , 597 (2007)). If we conclude that the sentence is procedurally
    sound, the second step is to review the “substantive reasonableness” of the
    sentence, taking into account the totality of the circumstances, “including the
    extent of any variance from the Guidelines range.” Gall, 
    552 U.S. at 51
    , 
    128 S.Ct. at 597
    . If the district court’s sentence is within the guidelines range, we expect
    that the sentence is reasonable. See United States v. Talley, 
    431 F.3d 784
    , 788
    (11th Cir. 2005) (“After Booker, our ordinary expectation [of reasonableness] still
    has to be measured against the record, and the party who challenges the sentence
    bears the burden of establishing that the sentence is unreasonable in the light of
    30
    both that record and the factors in section 3553(a).”); see also United States v.
    Hunt, 
    526 F.3d 739
    , 746 (11th Cir. 2008) (“Although we do not automatically
    presume a sentence within the guidelines range is reasonable, we ‘ordinarily . . .
    expect a sentence within the Guidelines range to be reasonable.” (quoting Talley,
    
    431 F.3d at 788
    )).
    When deciding upon a sentence, the district court must evaluate all of the §
    3553(a) factors. Gall, 
    552 U.S. at
    49–50, 
    128 S.Ct. at 596
    ; Shaw, 
    560 F.3d at 1237
    . In assessing the factors, the district court is “to consider every convicted
    person as an individual and every case as a unique study in the human failings that
    sometimes mitigate, sometimes magnify, the crime and the punishment to ensue.”
    Gall, 
    552 U.S. at 52
    , 
    128 S.Ct. at 598
     (quotation marks omitted). “[A] district
    court has ‘considerable discretion’ in deciding whether the § 3553(a) factors
    justify a variance and the extent of one that is appropriate.” Shaw, 
    560 F.3d at 1238
     (quoting United States v. Pugh, 
    515 F.3d 1179
    , 1191 (11th Cir. 2008)). We
    give that decision “due deference” because district courts have an “institutional
    advantage” in making sentencing determinations. 
    Id.
     We may vacate a sentence
    only “‘if we are left with the definite and firm conviction that the district court
    committed a clear error of judgment in weighing the § 3553(a) factors by arriving
    at a sentence that lies outside the range of reasonable sentences dictated by the
    31
    facts of the case.’” Id. (quoting Pugh, 
    515 F.3d at 1191
    ). “[T]hat we ‘might
    reasonably have concluded that a different sentence was appropriate is insufficient
    to justify reversal.’” 
    Id.
     (quoting Gall, 
    552 U.S. at 51
    , 
    128 S.Ct. at 597
    )).
    As for procedural error, Alfaro-Moncada does not contend that the district
    court incorrectly calculated the sentencing guidelines or treated them as
    mandatory. Instead, he argues that the district court failed to adequately consider
    the § 3553(a) factors. We disagree. Before imposing its sentence, the district
    court stated that it had “considered the statements of the parties, the presentence
    report containing the advisory guidelines and the statutory factors.” The court’s
    acknowledgment that it had considered Alfaro-Moncada’s arguments and the §
    3553(a) factors “alone is sufficient in post-Booker sentences.” United States v.
    Scott, 
    426 F.3d 1324
    , 1330 (11th Cir. 2005).
    Because we find that his sentence is “procedurally sound,” Shaw, 
    560 F.3d at 1237
    , we next must determine whether Alfaro-Moncada’s sentence is
    substantively reasonable. He contends that his 87-month sentence—a sentence at
    the lowest end of his advisory guideline range—is “greater than necessary,” see 
    18 U.S.C. § 3553
    (a), to achieve the purposes of sentencing. He argues that the
    district court failed to place sufficient weight on the nature and circumstances of
    the offense and his personal characteristics and history. It is his position that a
    32
    sentence below the advisory guidelines range would have adequately reflected the
    seriousness of his offense and provided just punishment.
    An 87-month, within the guidelines, sentence in this case is not outside the
    range of reasonableness. See Shaw, 
    560 F.3d at 1238
    . The district court
    explained that it was imposing that sentence because of the harm caused by child
    pornography, the strong interest in deterring its consumption, and Alfaro-
    Moncada’s failure to recognize the wrongfulness of his conduct. Those were all
    valid considerations under § 3553(a). See 
    18 U.S.C. § 3553
    (a)(2)(A) (seriousness
    of the offense); § 3553(a)(2)(B) (afford adequate deterrence); § 3553(a)(2)(C)
    (protect the public from further crimes of the defendant). The court’s decision to
    sentence Alfaro-Moncada to a term of imprisonment at the lowest end of his
    advisory guidelines range was lenient enough. The sentencing decision was not an
    abuse of discretion.
    IV.
    Alfaro-Moncada’s conviction and sentence are AFFIRMED.
    33