United States v. Buchanan ( 1995 )


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  •                    UNITED STATES COURT OF APPEALS
    FIFTH CIRCUIT
    ____________
    No. 93-8730
    ____________
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    versus
    DIANA GONZALES BUCHANAN, FEDELL ANDERSON, VERNON
    BONNER, and JOHN BUCHANAN,
    Defendants-Appellants.
    __________________________________________________
    Appeal from the United States District Court
    For the Western District of Texas
    __________________________________________________
    November 29, 1995
    Before REYNALDO G. GARZA, BARKSDALE, and EMILIO M. GARZA, Circuit
    Judges.
    EMILIO M. GARZA, Circuit Judge:
    Diana Gonzales Buchanan, John Buchanan, Vernon Bonner, and
    Fedell Anderson appeal their convictions for various crimes arising
    out of their involvement in a crack cocaine conspiracy.   We affirm
    the convictions of all the co-defendants.   We affirm the sentences
    of Diana Gonzales Buchanan, Vernon Bonner, and Fedell Anderson. We
    vacate John Buchanan's sentence on counts three and four, and
    remand for resentencing on whichever charge the government chooses
    to proceed with.   We affirm John Buchanan's sentence in all other
    respects.
    I
    Diana and John Buchanan distributed crack cocaine out of their
    home in Houston.     An informant, Ernest "Easy" McDay, began working
    with the Austin Police Department ("APD") to build a case against
    the Buchanans.      McDay had served as a middleman on some of the
    Buchanans' Austin drug sales, and was facing drug charges of his
    own when he agreed to help APD.        John Buchanan contacted McDay to
    broker a drug transaction with another party in Austin.             Pursuant
    to this transaction, John Buchanan, Fedell Anderson, Lawrence
    Crane,1 and Vernon Bonner drove to Austin in Anderson's 1985
    Cadillac.    The group drove to McDay's apartment, and Bonner and
    Crane conducted an armed sweep of the premises to make sure that no
    one else was present. John Buchanan and Anderson then entered, and
    McDay proceeded to set up the sale.
    After making the sale, the group went to a night club.              John
    Buchanan, Anderson, and McDay went inside, where McDay phoned his
    APD contact and reported what had transpired.          McDay also informed
    his APD contact that the group was armed, possibly with automatic
    weapons, and that the car contained a large amount of crack
    cocaine.     APD officers proceeded to the night club and began
    surveillance on Anderson's car.       The officers testified that Crane
    never strayed more than a few feet from the car, standing next to
    or sitting inside the car at all times.           Bonner apparently never
    exited the vehicle, but remained seated in the backseat of the car.
    Lawrence Crane, a juvenile, was not a party to this proceeding.
    -2-
    The officers believed that the two men were guarding the car.
    About forty-five minutes after the surveillance began, John
    Buchanan and Anderson exited the club, got back in the car, and
    proceeded up the street.        Not far from the night club, a marked
    police car stopped the Cadillac.         The police removed the men from
    the car and frisked each one, finding a loaded .380 caliber pistol
    in Crane's belt.       In securing the car, the police also found a
    loaded, fully automatic 9 mm. weapon and a loaded, semi-automatic
    9 mm. pistol with an extra magazine.         The police arrested the four
    men and took the vehicle to the station, where the officers
    obtained a warrant to search the vehicle.            The police found two
    baggies   containing     approximately     280   grams   of   crack   cocaine
    "cookies" inside the left-rear fender well, under a plastic vent
    where the door closes.
    About a week later, the Houston Police Department ("HPD") went
    to the Buchanans' home to execute an arrest warrant for Diana
    Buchanan on a state charge of "Combative Aggravated Assault."2             The
    officers were not oblivious to the Buchanans' drug activities. The
    officers present were all members of a joint HPD and Bureau of
    Alcohol, Tobacco, and Firearms ("ATF") anti-gang task force, which
    had been investigating the Buchanans for several months.                    An
    informant had indicated that the Buchanans were supplying Houston
    gangs with large quantities of crack cocaine, and officers had
    This arrest warrant was unrelated to John Buchanan's arrest in
    Austin. The warrant arose instead from allegations that Diana Buchanan had shot
    another woman at a taco stand.
    -3-
    attempted to negotiate an agreement to purchase six ounces of crack
    cocaine from the Buchanans.          In addition, APD had contacted HPD
    concerning John Buchanan's arrest in Austin, and had indicated to
    HPD that drugs might be found at the Buchanan home.
    Upon arriving at the Buchanan residence, the police knocked,
    identified themselves, and announced to Diana Buchanan that they
    were there to arrest her.           While still outside the house, the
    officers heard commotion from within and, fearing the destruction
    of evidence, forcibly entered the residence.            The officers secured
    Diana Buchanan, and immediately conducted a "protective sweep"3 of
    the premises to make sure no other persons were present.                 During
    this sweep, the officers discovered, in plain view, two loaded
    assault-style rifles.       Further, upon entering the kitchen, one of
    the officers observed several large baggies containing white powder
    residue on the kitchen counter.          The officer also observed white
    powder and small "rock" chunks on the kitchen counter, floor, and
    in the sink. The officers believed these substances to be cocaine.
    A "field test" confirmed that the substance in the baggies was
    cocaine.    After securing the residence, the officers obtained a
    search   warrant.      In   the   ensuing    search,    officers    discovered
    paraphernalia used to manufacture crack cocaine and approximately
    200 grams of crack and powder cocaine jammed into the toilet.                The
    See Maryland v. Buie, 
    494 U.S. 325
    , 327, 
    110 S. Ct. 1093
    , 1094, 
    108 L. Ed. 2d 276
    (1990) (defining a "protective sweep" as "a quick and limited
    search of the premises, incident to an arrest and conducted to protect the safety
    of police officers or others").
    -4-
    officers also seized a 1988 Jaguar and a 1985 Mercedes-Benz.
    The district court charged the four defendants as follows:
    John Buchanan, Bonner, and Anderson with possession with intent to
    distribute cocaine base, in violation of 21 U.S.C. § 841(a)(1) and
    18 U.S.C. § 2 (count one); John Buchanan, Bonner, Anderson, and
    Diana Buchanan with conspiracy to possess with intent to distribute
    cocaine base, in violation of 21 U.S.C. §§ 841(a)(1), 846 (count
    two), and with aiding and abetting each other in using or carrying
    a firearm during a drug-trafficking offense, in violation of 18
    U.S.C. § 924(c) and 18 U.S.C. § 2 (count three); and John Buchanan
    with using and carrying a machine gun during a drug-trafficking
    offense,   in   violation   of   18    U.S.C.   §   924(c)   (count   four),
    possessing a machine gun, in violation of 18 U.S.C. § 922(o) (count
    five), and being a convicted felon in possession of a firearm, in
    violation of 18 U.S.C. § 922(g) (count six).          All four defendants
    were tried before a jury.     The jury convicted John Buchanan on all
    six counts.     Anderson and Bonner were found guilty on counts one,
    two, and three.    Diana Buchanan was found guilty on count two.
    II
    A
    Diana Buchanan contends that the district court erred in
    denying her motion to suppress evidence seized from her residence
    following her arrest.       She argues that field testing the white
    powder residue contained in several clear plastic baggies, found on
    the kitchen counter of her home, constituted an impermissible
    -5-
    "search" in violation of her Fourth Amendment rights.                        Diana
    Buchanan maintains that all subsequently seized evidence of drug
    trafficking      should   have   been   excluded    as   the   fruits   of    this
    unconstitutional search.
    In reviewing a district court's denial of a motion to suppress
    evidence,       we   review   factual    findings    for   clear    error      and
    conclusions of law de novo.             United States v. Cardenas, 
    9 F.3d 1139
    , 1147 (5th Cir. 1993), cert. denied, ___ U.S. ___, 
    114 S. Ct. 2150
    , 
    128 L. Ed. 2d 876
    (1994).           We must view the evidence in the
    light most favorable to the party who prevailed below.                   
    Id. at 1147;
    United States v. Ramirez, 
    963 F.2d 693
    , 705 (5th Cir.), cert.
    denied, ___ U.S. ___, 
    113 S. Ct. 388
    , 
    121 L. Ed. 2d 296
    (1992).
    The exclusionary rule mandates that, "evidence obtained in
    violation of the Fourth Amendment cannot be used in a criminal
    proceeding against the victim of [an] illegal search and seizure."
    United States v. Calandra, 
    414 U.S. 343
    , 347, 
    94 S. Ct. 613
    , 619,
    
    38 L. Ed. 2d 561
    (1974).          Under the Fourth Amendment, "searches
    conducted outside the judicial process, without prior approval by
    judge or magistrate are per se unreasonable . . . subject only to
    a few specifically established and well-delineated exceptions."
    Katz v. United States, 
    389 U.S. 347
    , 357, 
    88 S. Ct. 507
    , 514, 19 L.
    Ed. 2d 576 (1967) (footnotes omitted).             The "plain view" doctrine
    is   one   of    the   "specifically     established     and   well-delineated
    exceptions" that may justify a warrantless seizure.                 Arizona v.
    Hicks, 
    480 U.S. 321
    , 326, 
    107 S. Ct. 1149
    , 1153, 
    94 L. Ed. 2d 347
    -6-
    (1987) ("It is well established that under certain circumstances
    the police may seize evidence in plain view without a warrant.")
    (citation and internal quotation marks omitted).                  The "plain view"
    doctrine may also validate a warrantless search of an item, so long
    as the item could lawfully have been seized. See 
    Hicks, 480 U.S. at 326
    , 107 S. Ct. at 1153 ("It would be absurd to say that an object
    could lawfully be seized and taken from the premises, but could not
    be moved for closer examination.")             Thus, to determine if the field
    test was a permissible warrantless search, we must determine if the
    officers could have lawfully seized the white powder residue
    contained in the plastic baggies.
    The "plain view" doctrine will justify a warrantless seizure
    if:     (1) the officers lawfully entered the area where the items
    were    located;   (2)    the    items       were   in    plain    view;   (3)   the
    incriminating nature of the items was "immediately apparent"; and
    (4) the officers had a lawful right of access to the items.                  Horton
    v. California, 
    496 U.S. 128
    , 136-37, 
    110 S. Ct. 2301
    , 2308, 110 L.
    Ed. 2d 112 (1990).       Diana Buchanan does not challenge the validity
    of the arrest warrant, the officers' entry into her home, or the
    protective sweep of her house. Therefore, the applicability of the
    plain    view   exception       in    this     case      turns    on   whether   the
    incriminating nature of the white powder residue was "immediately
    apparent" to the officers.           
    Horton, 496 U.S. at 136-37
    , 110 S. Ct.
    at 2308.
    The incriminating nature of an item is "immediately apparent"
    -7-
    if the officers have "probable cause" to believe that the item is
    either evidence of a crime or contraband.       
    Hicks, 480 U.S. at 326
    -
    
    27, 107 S. Ct. at 1153
    .     Probable cause does not require certainty.
    See Texas v. Brown, 
    460 U.S. 730
    , 742, 
    103 S. Ct. 1535
    , 1543, 75 L.
    Ed. 2d 502 (1983) (holding that probable cause "does not demand any
    showing that such a belief be correct or more likely true than
    false").    In reviewing probable cause determinations, we must
    consider the totality of the circumstances))including the officers'
    training and experience as well as their knowledge of the situation
    at hand.   See United States v. Buchner, 
    7 F.3d 1149
    , 1154 (5th Cir.
    1993) (holding that a probable cause determination "must be viewed
    in light of the observations, knowledge, and training of the law
    enforcement officers involved in the warrantless search"), cert.
    denied, ___ U.S. ___, 
    114 S. Ct. 1331
    , 
    127 L. Ed. 2d 378
    (1994);
    United States v. Fooladi, 
    703 F.2d 180
    , 183 (5th Cir. 1983)
    (holding that a probable cause determination should consider "the
    facts and circumstances known to the officer, and of which he has
    reasonably trustworthy information").
    The   officers   who   executed   the   arrest   warrant   for   Diana
    Buchanan were experienced members of an HPD-ATF anti-gang task
    force.   They were aware of purported drug activity at the Buchanan
    residence, and had been investigating the Buchanans for several
    months. The officers were also aware that Diana Buchanan's husband
    had just been arrested in Austin on drug and gun charges.        When the
    police officers knocked on the door and announced their presence,
    -8-
    they heard commotion within the house.               Upon entry, the officers
    conducted     a    protective   sweep     during    which    they    observed   two
    assault-style rifles, white powder and small rock crumbs on the
    kitchen counter, floor, and sink, and several clear plastic bags
    containing a white powder residue.4                Based upon the totality of
    these circumstances, we hold that the officers had probable cause
    to believe that the white powder residue contained in the plastic
    baggies was contraband or evidence of a crime.5                Accordingly, the
    officers could have lawfully seized the items.               See 
    Brown, 460 U.S. at 740-43
    , 103 S. Ct. at 1542-43 (upholding plain view seizure of
    "opaque, green party balloon" where presence of additional drug
    paraphernalia along with officer's knowledge that balloons were
    commonly used to transport narcotics amounted to probable cause).
    Since       the   plain   view    doctrine     would    have    supported a
    warrantless seizure of the evidence, a warrantless search of the
    items was also permissible.6           
    Hicks, 480 U.S. at 326
    , 107 S. Ct. at
    According to the record, the officer who first entered the kitchen
    during the protective sweep stated that it was "obvious" that cocaine residue and
    small chunks of rock cocaine were "all over the kitchen."
    We emphasize that the fact that the officers chose to field test the
    substance does not indicate that they lacked probable cause to believe the
    residue was contraband.     Testing for certainty's sake will not, by itself,
    undermine an otherwise valid probable cause determination. Cf. United States v.
    Prandy-Binett, 
    995 F.2d 1069
    , 1073 (D.C. Cir. 1993) ("If [the defendant's]
    perfume bag held clear ziplock bags containing white powder, the detectives also
    would not have been sure whether he possessed cocaine or heroin (or some
    innocuous substance).    Yet that cannot be a reason for finding no probable
    cause."), cert. denied, ___ U.S. ___, 
    114 S. Ct. 1196
    , 
    127 L. Ed. 2d 545
    (1994).
    This opinion should not be read to hold that the mere presence of
    white powder residue in a plastic bag, by itself, will always give rise to
    probable cause. We hold only that under the circumstances of the present case,
    the incriminating nature of the evidence found in plain view was "immediately
    -9-
    1153.    Accordingly, we hold that the district court did not err in
    admitting     the    evidence   seized      from   the   Buchanan   residence
    subsequent to the field test.7
    B
    Diana Buchanan next argues that the district court erred when
    it admitted into evidence two taped conversations between her and
    an HPD officer.       Diana Buchanan maintains that the recording was
    never    properly     authenticated.        A   district   court    has   broad
    discretion in determining whether or not a sound recording should
    be admitted.        United States v. Biggins, 
    551 F.2d 64
    , 66 (5th Cir.
    1977).    We will find error only where the district court abuses
    this discretion.      United States v. Eakes, 
    783 F.2d 499
    , 506-07 (5th
    Cir.), cert. denied, 
    477 U.S. 906
    , 
    106 S. Ct. 3277
    , 
    91 L. Ed. 2d 567
    (1986).
    The government has the burden of demonstrating that the
    recording, as played, "is an accurate reproduction of relevant
    sounds previously audited by a witness."           
    Biggins, 551 F.2d at 66
    .
    Generally, this burden requires the government to demonstrate (1)
    the operator's competency, (2) the fidelity of the recording
    apparent." This factor distinguishes this case from the situation in Hicks. In
    Hicks, the officer's search of the stereo was improper because, based upon his
    knowledge and experience, he lacked probable cause to suspect that the equipment
    was stolen or evidence of a crime. See 
    Hicks, 480 U.S. at 328
    , 107 S. Ct. at
    1154 (holding that "probable cause to believe the equipment was stolen was
    required" to justify officer's search of stereo found in plain view).
    John Buchanan also asserts that the district court erred in admitting
    the evidence discovered subsequent to the field test at the Buchanan residence.
    Having held that the evidence was lawfully admitted, we need not address this
    argument.
    -10-
    equipment, (3) the absence of material alterations, and (4) the
    identification of relevant sounds or voices. Id.; United States v.
    Stone, 
    960 F.2d 426
    , 436 (5th Cir. 1992). Although compliance with
    the Biggins requirements is the "preferred method" of proceeding,
    strict compliance is not required.           See 
    Biggins, 551 F.2d at 67
    ("[The district court's] discretion is not to be sacrificed to a
    formalistic    adherence   to   the    standard   we   establish.").   The
    district court may admit the recording in the absence of these
    requirements if, upon independent examination, the district court
    is convinced that "the recording accurately reproduces the auditory
    experience."    
    Stone, 960 F.2d at 436
    (citation omitted).
    The recording in question includes two conversations in which
    an undercover officer discusses purchasing cocaine with Diana
    Buchanan.     At the conclusion of each conversation, another voice
    indicates the date and time of the conversations.                Testimony
    established that both officers present during the recording (an
    undercover officer who attempted to negotiate the drug purchase and
    the officer who indicated the time and date of the conversations)
    could hear the conversations as they occurred.             The officer who
    gave the time and date of the conversations testified that he had
    reviewed the tape being offered and could confirm that the tape was
    indeed the one that he and the undercover officer had made, and
    that the recording accurately represented the conversations as they
    occurred. Further, this officer testified that after speaking with
    Diana Buchanan during her arrest, he was "convinced" that the voice
    -11-
    on the tape was Diana Buchanan's.        Although the district court did
    not elicit testimony as to all the Biggins elements, the officer
    sponsoring the recording gave adequate testimony to support the
    recording's reliability. All the voices were identified, and there
    was no intimation that the tape had been altered.              Further, the
    testifying officer explained how the recording was made, and
    testified as to its accuracy.       Accordingly, we cannot say that the
    district court abused its discretion in admitting the tape as an
    accurate reproduction of relevant conversations. See United States
    v.   Lance,   
    853 F.2d 1177
    ,   1181-82   (5th    Cir.   1988)   (holding
    recordings properly authenticated where "law enforcement agents who
    participated in the taped conversations testified that, according
    to their memories, the audio and video tapes contained accurate
    recordings of the conversations that occurred").
    C
    Diana Buchanan next argues that the district court erred in
    increasing her offense level for "possession of a firearm" where
    the jury acquitted her on the charge of aiding and abetting in
    using or carrying a firearm during a drug-trafficking offense
    (count three). See U.S.S.G., § 2D1.1(b)(1) ("If a dangerous weapon
    (including a firearm) was possessed, increase by 2 levels.").            The
    district court's decision to apply § 2D1.1(b)(1) "is essentially a
    factual   determination     reviewable     under    the   clearly   erroneous
    standard."    United States v. Rodriguez, 
    62 F.3d 723
    , 724 (5th Cir.
    1995).
    -12-
    The fact that the jury found Diana Buchanan not guilty of
    using or carrying a firearm during a drug-trafficking offense, does
    not bar the district court from increasing Diana Buchanan's offense
    level under § 2D1.1(b)(1).           While a conviction requires proof
    beyond   a   reasonable    doubt,    a   district   court   may   sentence    a
    defendant within the Sentencing Guidelines on any relevant evidence
    that "has sufficient indicia of reliability to support its probable
    accuracy."     U.S.S.G. § 6A1.3; United States v. Edwards, 
    65 F.3d 430
    , 432 (5th Cir. 1995).           The police found two assault-style
    weapons at Diana Buchanan's house. The police testified that Diana
    Buchanan made statements indicating that she knew how to use these
    weapons, and that she had contemplated firing them at police.
    Police testimony also indicated that Diana Buchanan had used
    firearms in the past, and reasonably knew that her co-conspirators
    were carrying weapons in Austin.            Judging from the record, the
    district court's § 2D1.1(b)(1) two-level enhancement for possession
    of a firearm was not clearly erroneous.8                 In sentencing, "a
    We distinguish this case from United States v. Pofahl, 
    990 F.2d 1456
    (5th Cir.), cert. denied, ___ U.S. ___, 
    114 S. Ct. 266
    , 
    126 L. Ed. 2d 218
    (1993).
    In Pofahl, we held that where there is a factual dispute as to whether a
    defendant "possessed" a gun within the meaning of § 2D1.1(b)(1), FED. R. CRIM. P.
    32(c)(3)(D) requires the district court to either make a specific finding or
    indicate that the firearm will not be used to enhance the defendant's sentence.
    
    Pofahl, 990 F.2d at 1486
    . Here, however, Diana Buchanan's only objection to the
    findings in the presentence report was based on her acquittal of the charge of
    using or carrying a firearm during a drug-trafficking offense, in violation of
    18 U.S.C. § 924(c). The fact that the jury acquitted Diana Buchanan on this
    charge does not, without more, amount to a factual dispute with the presentence
    report that Diana Buchanan possessed a firearm within the meaning of
    § 2D1.1(b)(1). The district court adopted the findings in the presentence
    report. Without a specific factual controversy, further factual findings under
    FED. R. CRIM. P. 32(c)(3)(D) are not required. Compare United States v. Mir, 
    919 F.2d 940
    , 943 (5th Cir. 1990) (holding that where defendant did not offer any
    rebuttal evidence to refute presentence report, "district court . . . was free
    to adopt facts in PSI without further inquiry") with 
    Pofahl, 990 F.2d at 1486
    -13-
    district court has wide discretion in determining which evidence to
    consider and which testimony to credit."           
    Edwards, 65 F.3d at 432
    .
    Accordingly, we hold that the record in this case provides ample
    evidence to support a § 2D1.1(b)(1) enhancement of Diana Buchanan's
    offense level.      See, e.g., 
    Rodriguez, 62 F.3d at 724-25
    (holding
    that so long as weapon was accessible to defendant, fact that it
    was never brandished and was unloaded does not negate a finding of
    possession under § 2D1.1(b)(1)).9
    (remanding for specific findings under FED. R. CRIM. P. 32(c)(3)(D) where
    defendant objected to § 2D1.1(b)(1) enhancement for possession of a firearm that
    he claimed "belonged to his roommate," and district court failed to make any
    findings on this point).
    Diana Buchanan also argues that the district court abused its
    discretion in sentencing her to the maximum possible sentence under the
    guidelines "in light of the unusual and tragic circumstances of Mrs. Buchanan's
    background," or, in the alternative, that the district court should have departed
    from the guidelines in sentencing her. There is no evidence that the district
    court failed to take into account Diana Buchanan's "tragic circumstances." The
    presentence report develops these factors, and the district court recognized that
    Diana Buchanan had travelled a "rocky road." Nevertheless, the district court
    felt that the maximum sentence was the appropriate punishment. Judging from the
    record, we cannot say the district court abused its discretion by giving the
    maximum sentence. So long as the district court acts within the guidelines, a
    harsh sentence, in and of itself, does not constitute error. See United States
    v. Ponce, 
    917 F.2d 841
    , 842 (5th Cir. 1990) ("[W]e will uphold the district
    court's sentence so long as it results from a correct application of the
    guidelines to factual findings which are not clearly erroneous.") (citation and
    internal quotations omitted), cert. denied, 
    499 U.S. 940
    , 
    111 S. Ct. 1398
    , 
    113 L. Ed. 2d 453
    (1991). To the extent that Diana Buchanan is attempting to contest
    the district court's implicit decision not to depart from the guidelines, we have
    previously held that the district court's decision not to depart is unreviewable
    on appeal. United States v. Leonard, 
    61 F.3d 1181
    , 1185 (5th Cir. 1995). Diana
    Buchanan, along with John Buchanan, also urges that the vast disparity between
    the sentencing ranges for crack and powder cocaine, mandated by the guidelines,
    violates equal protection principles contained in the Fifth Amendment. We have
    repeatedly rejected this argument and do so again. See United States v. Cooks,
    
    52 F.3d 101
    , 105 (5th Cir. 1995) (holding that the guidelines' stiffer penalties
    for cocaine base do not violate equal protection); United States v. Cherry, 
    50 F.3d 338
    , 344 (5th Cir. 1995) ("The 100 to one ratio is extreme, but it is not
    the province of this Court to second-guess Congress's chosen penalty. That is
    a discretionary legislative judgment for Congress and the Sentencing Commission
    to make."); United States v. Watson, 
    953 F.2d 895
    , 897-98 (5th Cir.) (holding
    that "no unconstitutional infirmity exists in the Sentencing Guidelines'
    treatment of crack vis-a-vis powder cocaine"), cert. denied, 
    504 U.S. 928
    , 
    112 S. Ct. 1989
    , 
    118 L. Ed. 2d 586
    (1992).
    -14-
    III
    A
    John   Buchanan   argues   that   the   district   court   improperly
    enhanced his sentence for being the "organizer or leader" of the
    drug-trafficking organization.         See U.S.S.G. § 3B1.1 ("If the
    defendant was an organizer or leader of a criminal activity that
    involved five or more participants or was otherwise extensive,
    increase by 4 levels."). John Buchanan argues that no organization
    existed, and that if one did exist, it did not include five or more
    participants.    Normally, we review a district court's finding
    concerning a defendant's role in the offense for clear error.
    United States v. Bethley, 
    973 F.2d 396
    , 401 (5th Cir. 1992), cert.
    denied, ___ U.S. ___, 
    113 S. Ct. 1323
    , 
    122 L. Ed. 2d 709
    (1993).
    In this case, however, John Buchanan failed to object to the
    district court's findings, and thus we review for plain error.
    United States v. Lopez, 
    923 F.2d 47
    , 49 (5th Cir.), cert. denied,
    
    500 U.S. 924
    , 
    111 S. Ct. 2032
    , 
    114 L. Ed. 2d 117
    (1991).            Plain
    errors are errors which are both obvious and which affect the
    defendant's substantial rights.          United States v. Calverley, 
    37 F.3d 160
    , 163-64 (5th Cir. 1994) (en banc), cert. denied, ___ U.S.
    ___, 
    115 S. Ct. 1266
    , 
    131 L. Ed. 2d 145
    (1995).         Upon a showing of
    plain error, an appellate court is empowered, but is not required,
    to correct the error.    
    Id. at 164.
         We will only correct a plain
    error if it seriously affected the fairness, integrity, or public
    reputation of the judicial proceeding.        
    Id. -15- The
        district    court     found    that    the        drug    distribution
    organization    in   this   case    consisted      of   John     Buchanan,    Diana
    Buchanan, Bonner, Anderson, and McDay. The presentence report also
    included several other regular purchasers from the Buchanans, and
    "other confidential informants in Houston, Texas."                     Judging from
    the record, we cannot say that these findings amounted to plain
    error.     There was ample evidence to support the district court's
    finding that a drug-trafficking organization of five or more
    persons existed.        Further, there was ample evidence that John
    Buchanan was the leader of this group.              Testimony indicated that
    Crane and Anderson worked as "bodyguards" for John Buchanan, and
    that John Buchanan directed their actions.                     McDay's testimony
    confirmed that on the night of the arrest in Austin, John Buchanan
    gave the others instructions, and they followed those instructions.
    Testimony also indicated that John Buchanan had control over the
    sale of drugs by his wife, Diana Buchanan.                      We hold that the
    district court did not commit plain error in finding John Buchanan
    to be the organizer or leader of this drug-trafficking group.                     See
    U.S.S.G. § 3B1.1 comment. (n.4) ("Factors the court should consider
    include the exercise of decision making authority . . . and the
    degree of control and authority exercised over others."); see also
    United States v. Fierro, 
    38 F.3d 761
    , 774 (5th Cir. 1994) (refusing
    to consider whether district court erred in its factual findings at
    sentencing because the defendant failed to object to the district
    court's    factual   findings      and   "questions       of    fact    capable   of
    -16-
    resolution at sentencing can never constitute plain error"), cert.
    denied, ___ U.S. ___, 
    115 S. Ct. 1431
    , 
    131 L. Ed. 2d 312
    (1995).10
    B
    John Buchanan next argues that his conviction on counts three
    and four, both for using or carrying a firearm during a drug-
    trafficking offense, violated the Double Jeopardy Clause.                Count
    three charged John Buchanan with violating 18 U.S.C. § 924(c) for
    aiding and abetting in using or carrying two semi-automatic pistols
    during the crime of possession with intent to distribute cocaine
    base in violation of 21 U.S.C. § 841(a)(1).              Count four charged
    John Buchanan with violating 18 U.S.C. § 924(c) for using or
    carrying a machine gun during the same predicate crime (possession
    with intent to distribute cocaine base) relied on in count three.
    As we have previously held, use of more than one gun during a
    single drug-trafficking offense will not support multiple counts
    under 18 U.S.C. § 924(c).          United States v. Privette, 
    947 F.2d 1259
    , 1262 (5th Cir. 1991), cert. denied, 
    503 U.S. 912
    , 112 S. Ct.
    John Buchanan argues that the punishment disparity between crack and
    powder cocaine constitutes racial discrimination in violation of his Fifth
    Amendment right to equal protection, and constitutes cruel and unusual punishment
    in violation of the Eighth Amendment.       John Buchanan also argues that the
    guideline applicable to crack cocaine is unconstitutionally vague.        We have
    consistently rejected these arguments and do so again. 
    See supra
    note 9; see
    also United States v. Cherry, 
    50 F.3d 338
    , 342-44 (5th Cir. 1995) (holding that
    the sentencing guidelines’ disparate treatment of crack cocaine is not racially
    discriminatory under the Fifth Amendment's equal protection guarantees); United
    States v. Fisher, 
    22 F.3d 574
    , 579-80 (5th Cir.) (holding that stiffer penalties
    for cocaine base transactions "are not grossly disproportionate to the severity
    of the offense" and, therefore, do not violate Eighth Amendment), cert. denied,
    ___ U.S. ___, 
    115 S. Ct. 529
    , 
    130 L. Ed. 2d 433
    (1994); United States v. Thomas,
    
    932 F.2d 1085
    , 1090 (5th Cir. 1991) (holding that the statute and sentencing
    guidelines applicable to crack cocaine "have a reasonable basis and are not vague
    under commonly understood usages"), cert. denied, 
    502 U.S. 1038
    , 
    112 S. Ct. 887
    ,
    
    116 L. Ed. 2d 791
    (1992); 
    Fisher, 22 F.3d at 579
    (rejecting vagueness challenge
    to the guideline applicable to crack cocaine).
    -17-
    1279, 
    117 L. Ed. 2d 505
    (1992).          Counts three and four linked the
    § 924(c) gun charge to the same underlying drug offense))possession
    with intent to distribute cocaine base.           Accordingly, we hold that
    sentencing    John   Buchanan    on   both   count   three   and   count   four
    violated double jeopardy principles.11            The proper remedy is to
    vacate John Buchanan's sentence on counts three and four and remand
    for resentencing on whichever count the government chooses to
    proceed with.     
    Id. at 1263.
        We affirm John Buchanan's sentence in
    all other respects.12
    11
    In its brief the government concedes that sentencing John Buchanan
    on both counts three and four violated double jeopardy principles.
    John Buchanan also argues that his sentences under counts five and
    six were duplicitous of the firearm charge contained in counts three and four.
    This argument lacks merit. Counts three and four, applying 18 U.S.C. § 924(c),
    required only that the defendant use or carry a firearm during a drug-trafficking
    offense. Count five, alleging violation of 18 U.S.C. § 922(o), required the
    possession of an automatic weapon; and count six, applying 18 U.S.C. § 922(g)(1),
    required that the defendant not only possess a firearm, but that he also be a
    convicted felon. Thus counts five and six involve distinct elements not required
    by counts three and four. Under the test set forth in Blockburger v. United
    States, 
    284 U.S. 299
    , 304, 
    52 S. Ct. 180
    , 182, 
    76 L. Ed. 2d 306
    (1932) ("[T]he
    test to be applied to determine whether there are two offenses or only one is
    whether each provision requires proof of an additional fact which the other does
    not."), John Buchanan's sentences under counts five and six do not violate double
    jeopardy principles.     We also reject John Buchanan's contention that the
    imposition of a civil forfeiture penalty, the loss of a 1985 Mercedes and a 1988
    Jaguar, constituted double jeopardy and violated the Eighth Amendment prohibition
    against excessive fines. As we have previously held, the forfeiture of drug
    proceeds does not constitute punishment, and thus neither the Eighth Amendment
    prohibition against excessive fines nor double jeopardy analysis is applicable.
    United States v. Tilley, 
    18 F.3d 295
    , 300 (5th Cir.), cert. denied, ___ U.S. ___,
    
    115 S. Ct. 574
    , 
    130 L. Ed. 2d 490
    (1994). Even if these automobiles were not
    drug proceeds, so long as the amount forfeited was rationally related to the
    governmental and societal losses associated with John Buchanan's criminal
    activity, double jeopardy will not bar subsequent punishment. Department of
    Revenue of Montana v. Kurth Ranch, ___ U.S. ___, ___, 
    114 S. Ct. 1937
    , 1945, ___
    L. Ed. 2d ___ (1994); United States v. Halper, 
    490 U.S. 435
    , 448-49, 
    109 S. Ct. 1892
    , 1902, 
    104 L. Ed. 2d 487
    (1989); 
    Tilley, 18 F.3d at 299-300
    . In addition,
    the Eighth Amendment only bars excessive fines. United States v. Austin, ___
    U.S. ___, ___, 
    113 S. Ct. 2801
    , 2812, 
    125 L. Ed. 2d 488
    (1993). We hold that the
    forfeiture of these two automobiles, even when combined with the other
    punishments in this case, did not constitute excessive punishment. Nor did the
    forfeiture put John Buchanan in double jeopardy. The value of these automobiles
    was rationally related to the governmental and societal losses associated with
    -18-
    IV
    A
    Bonner argues that the district court erred in overruling his
    FED. R. EVID. 404(b) objection and admitting evidence of his prior
    cocaine delivery conviction.          The district court admitted the
    evidence as relevant to Bonner's "motive," "state of mind," or
    "intent" because Bonner's defense was that he was an innocent
    bystander.     We review the district court's admission of prior
    convictions over objection under a heightened abuse of discretion
    standard.     United States v. Wisenbaker, 
    14 F.3d 1022
    , 1028 (5th
    Cir. 1994); United States v. Carrillo, 
    981 F.2d 772
    , 774 (5th Cir.
    1993), cert. denied, ___ U.S. ___, 
    115 S. Ct. 261
    , 
    130 L. Ed. 2d 181
    (1994).    Extrinsic offense evidence is properly admitted under
    Rule 404(b) only if:     (1) it is relevant to an issue other than the
    defendant's    character,    and   (2)     its   probative    value   is   not
    substantially outweighed by its undue prejudice.             United States v.
    Ponce, 
    8 F.3d 989
    , 993 (5th Cir. 1993); United States v. Beechum,
    
    582 F.2d 898
    , 911 (5th Cir. 1978) (en banc), cert. denied, 
    440 U.S. 920
    , 
    99 S. Ct. 1244
    , 
    59 L. Ed. 2d 472
    (1979).
    Evidence is relevant "if it makes the existence of any fact at
    issue more or less probable than it would be without the evidence."
    United States v. Williams, 
    900 F.2d 823
    , 826 (5th Cir. 1990).              As
    we stated in Beechum, "[i]t is derogative of the search for truth
    the Buchanans' crack cocaine operation. After careful review of the record, we
    find the remainder of John Buchanan's claims to be without merit.
    -19-
    to allow a defendant to tell his story of innocence without facing
    him with evidence impeaching that 
    story." 582 F.2d at 909
    .
    Evidence that Bonner was previously convicted of a cocaine delivery
    offense tends to refute his story that he was merely "in the wrong
    place at the wrong time," and makes it more probable that he had
    the requisite "state of mind" or "intent" to participate in the
    present cocaine-related offenses.13         See United States v. Cheramie,
    
    51 F.3d 538
    , 541-42 (5th Cir. 1995) (holding evidence of prior drug
    sales admissible under 404(b) to show "knowledge" and "intent"
    where defendant claimed he did not know that the gym bag he took
    possession of contained two kilograms of cocaine). Accordingly, we
    hold that the district court did not abuse its discretion in
    finding Bonner's prior drug offense relevant to the case at hand.
    After finding Bonner's prior conviction relevant, the district
    court weighed the conviction's probative value against its possible
    prejudicial effects.        The probative value of extrinsic offense
    evidence "must be determined with regard to the extent to which the
    defendant's unlawful intent is established by other evidence,
    stipulation, or inference."         
    Beechum, 582 F.2d at 914
    ; 
    Williams, 900 F.2d at 827
    ; see also United States v. Henthorn, 
    815 F.2d 304
    ,
    Bonner argues that we should evaluate the relevance of the prior
    conviction as to each distinct count of the indictment. We decline to do so.
    Bonner offered the same defense to all counts of the indictment: that he was an
    innocent bystander. The prior conviction is relevant to show that Bonner did not
    innocently accompany his co-defendants, and this extends to all counts for which
    Bonner was charged as a member of the conspiracy (possession of crack cocaine
    with intent to distribute, conspiracy to possess with intent to distribute, and
    aiding and abetting in using or carrying a firearm during a drug-trafficking
    offense).
    -20-
    308 (5th Cir. 1987) (indicating that the probity analysis "hinges
    upon the government's need for the testimony").                 Because the
    prosecution's other admitted evidence shed little light on Bonner's
    "state of mind" or "intent,"14 the probative value of the extrinsic
    offense evidence was greater.           See 
    Williams, 900 F.2d at 827
    (noting that "limited evidence the government could . . . adduce on
    the issues of knowledge and intent increases the incremental
    probity of the extrinsic evidence"); see also 
    Beechum, 582 F.2d at 914
    -15 (discussing incremental probity of extrinsic evidence in
    relation to other admissible evidence).           Bonner's entry of a not
    guilty plea and his attack on McDay's credibility also enhances the
    probity of the prior offense evidence by placing his intent and
    state of mind at issue.15       See 
    Henthorn, 815 F.2d at 308
    (finding
    probative value of extrinsic offense evidence outweighed possible
    prejudice where defendant pleaded not guilty and attacked the
    credibility of witnesses).          Although the danger of prejudice
    associated with prior conviction evidence is often great, the
    district court in this case substantially reduced the possibility
    of prejudice to Bonner by carefully instructing the jury on how
    they could consider the evidence.           See 
    id. at 304
    (finding that
    Without the admission of the prior drug conviction, the government's
    evidence as to Bonner's state of mind would have been limited to McDay's
    testimony concerning Bonner's use of a gun in sweeping his apartment, the
    officers' observations at the night club, Bonner's presence in the car, and
    Bonner's thumbprint on one of the gun magazines.
    We have previously held that in conspiracy cases "the mere entry of
    a not guilty plea sufficiently raises the issue of intent to justify the
    admissibility of extrinsic offense evidence." United States v. Prati, 
    861 F.2d 82
    , 86 (5th Cir. 1988).
    -21-
    careful jury instructions minimized possibility of prejudice); see
    also United States v. Gordon, 
    780 F.2d 1165
    , 1174 (5th Cir. 1986)
    (holding improper admission of extrinsic evidence may be cured by
    adequate    limiting     instruction).        Based    upon    the    foregoing
    considerations, we hold that the district court did not abuse its
    discretion in finding that the probative value of Bonner's prior
    drug    conviction     outweighed    the    danger    of   undue     prejudice.
    Accordingly, we hold that the district court did not err in
    admitting the evidence of Bonner's prior drug conviction.
    B
    Bonner next argues that the district court erred in admitting
    the opinion testimony of two APD officers.16 We review the district
    court's evidentiary rulings for abuse of discretion. United States
    v. Speer, 
    30 F.3d 605
    , 609 (5th Cir. 1994), cert. denied, ___ U.S.
    ___, 
    115 S. Ct. 768
    , 
    130 L. Ed. 2d 664
    (1995).                The admission of
    the officers' opinion testimony is appropriately examined under the
    standard    governing    testimony     of   expert    witnesses.17       Expert
    When asked about the significance of observing Bonner and Crane in
    the car outside the nightclub, one officer testified that "[i]t appeared that
    those two people were protecting something in that car." The second officer
    stated his opinion that it would be unreasonable for persons trafficking crack
    cocaine worth $30,000 to have an uninvolved "outsider" in the car. Bonner timely
    objected to these answers as improper opinion testimony, but in both instances
    the district court overruled the objections.
    Bonner contends that the government did not qualify or proffer the
    police officers as expert witnesses, and that their testimony must, therefore,
    be reviewed as opinion testimony of lay witnesses. We disagree. "If scientific,
    technical, or other specialized knowledge will assist the trier of fact to
    understand the evidence or to determine a fact in issue, a witness qualified as
    an expert by knowledge, skill, experience, training or education, may testify
    thereto in the form of an opinion or otherwise." FED. R. EVID. 702 (emphasis
    added). The record reflects that the prosecution qualified the officers as
    experts during direct examination by questioning them and eliciting responses as
    -22-
    witnesses are permitted to express opinions or inferences that
    "will assist the trier of fact to understand the evidence or to
    determine a fact in issue."          FED. R. EVID.    702.   In situations such
    as   the    present   case,   "The    rule    is    well-established     that   an
    experienced narcotics agent may testify about the significance of
    certain     conduct   or   methods     of   operation    unique    to   the   drug
    distribution business, as such testimony is often helpful in
    assisting the trier of fact understand the evidence."                     United
    States v. Washington, 
    44 F.3d 1271
    , 1283 (5th Cir.), cert. denied,
    ___ U.S. ___, 
    115 S. Ct. 2011
    , 
    131 L. Ed. 2d 1010
    (1995); see
    United States v. Fleishman, 
    684 F.2d 1329
    , 1335-36 (9th Cir.)
    (finding no error in admission of agent's testimony that defendant
    acted as a "lookout" for drug transaction), cert. denied, 
    459 U.S. 1044
    , 
    103 S. Ct. 464
    , 
    74 L. Ed. 2d 614
    (1982).
    The    record   reflects   that       both   testifying     officers    were
    experienced in investigating narcotics trafficking and drug-related
    crimes.18    Because of their experiences, the officers were familiar
    with certain conduct and methods of operation unique to the drug
    distribution business, including the methods used by drug dealers
    to protect their illegal investments.              The first officer testified
    that, in his opinion, Bonner's and Crane's actions indicated that
    to their experience and qualifications.
    The first officer, a 15-year veteran of the APD, was assigned to the
    repeat offender program and testified as to his "experience and training" in
    investigating drug-trafficking crimes. The second officer, a 12-year veteran,
    had served as a narcotics investigator for six and one-half years prior to his
    testimony.
    -23-
    they were guarding the car.        This type of testimony is permissible
    because it is based on specialized knowledge, and is admitted to
    aid the jury in understanding a fact in issue))whether Bonner's
    presence with the drugs was innocent or not.             The second officer
    testified that, based on his experience, a person transporting
    $30,000 worth of crack cocaine and multiple firearms would not
    allow a complete outsider to ride in the car.            This testimony was
    also   permissible     opinion    testimony,     based   on   the   officer's
    specialized knowledge.19         It aids the jury in understanding the
    significance of Bonner's presence in a car laden with narcotics and
    weapons.20     FED. R. EVID.       702; 
    Washington, 44 F.3d at 1283
    .
    Accordingly, we hold that the district court did not abuse its
    We also reject Bonner's argument that this testimony was
    impermissible "profile evidence." In this case, the government did not seek to
    prove guilt by showing how a defendant fit a list of characteristics making up
    the "profile" of a drug courier. See United States v. Williams, 
    957 F.2d 1238
    ,
    1241 (5th Cir. 1992) (holding testimony impermissible where officer "described
    the profile itself and then proceeded to list the characteristics of the profile
    that [the defendant] displayed"). Rather, in this case the government offered
    the officer's testimony to indicate that Bonner's actions were inconsistent with
    his claim that he was an innocent bystander. See 
    Washington, 44 F.3d at 1283
    &
    n.44 (holding "five 'expert' opinions by two government agents and the
    [confidential informant] regarding the operations and methods of drug
    trafficking" not impermissible profile evidence "because it was not offered for
    that purpose").
    Bonner also contends that the officers' opinions amounted to
    testimony as to his guilt. Since the determination of guilt is solely within the
    province of the trier of fact, an expert witness cannot give an opinion as to a
    criminal defendant's mental state or condition. FED. R. EVID. 704(b). However,
    opinion testimony is permitted in regard to other ultimate issues. FED. R. EVID.
    704(a). Rule 704(a) provides that "[t]estimony in the form of an opinion or
    inference otherwise admissible is not objectionable because it embraces an
    ultimate issue to be decided by the trier of fact." 
    Id. We have
    previously
    recognized the difference between an impermissible opinion on an ultimate legal
    issue and "a mere explanation of the expert's analysis of facts which would tend
    to support a jury finding on the ultimate issue." United States v. Speer, 
    30 F.3d 605
    , 610 (5th Cir. 1994). We hold that the opinion testimony in question
    falls into the latter category, and was merely an analysis of the evidence in
    light of the officers' specialized knowledge of drug trafficking.
    -24-
    discretion    in   admitting     the   officers'         opinion   testimony    into
    evidence.21
    V
    Anderson     argues   that    the       district    court    misapplied    the
    Sentencing    Guidelines    in     calculating      his     base   offense   level.
    Anderson maintains that the district court erred in attributing to
    him the drugs seized from the Buchanan residence in Houston.22                     A
    district court's findings about the quantity of drugs upon which a
    sentence should be based are factual findings, which we review for
    clear error.       United States v. Palamo, 
    998 F.2d 253
    , 258 (5th
    Cir.), cert. denied, ___ U.S. ___, 
    114 S. Ct. 358
    , 
    126 L. Ed. 2d 322
    (1993); United States v. Ponce, 
    917 F.2d 841
    , 842 (5th Cir.
    1990), cert. denied, 
    499 U.S. 940
    , 
    111 S. Ct. 1398
    , 
    113 L. Ed. 2d 453
    (1991).      The Sentencing Guidelines allow a district court "to
    hold a defendant accountable for all relevant conduct."                      United
    States v. Maseratti, 
    1 F.3d 330
    , 340 (5th Cir. 1993), cert. denied,
    ___ U.S. ___, 
    114 S. Ct. 1096
    , 
    127 L. Ed. 2d 409
    (1994).                 Under the
    Bonner further argues that the cumulative effect of the district
    court's evidentiary errors amounted to reversible error. Finding no evidentiary
    errors, we reject this contention.
    In response to Anderson's objection to having the Houston drugs
    included in his sentence, the probation officer stated that Anderson's
    involvement in the conspiracy was extensive enough that the substances seized in
    Houston were attributable to him. The district court agreed, stating that:
    There's no question in my mind that the jury was correct in
    convicting Mr. Anderson of the conspiracy.        The presentence
    investigation shows Mr. Anderson's relation to the Buchanans going
    back to 1987. There's no question that any of the narcotics found
    in that room or house in Houston were part of the conspiracy that
    had been going on for a long period of time and Mr. Anderson was
    part of it.
    -25-
    Sentencing   Guidelines,   a   co-conspirator    is   liable   for    "all
    reasonably foreseeable acts and omissions of others in furtherance
    of   the   jointly   undertaken    criminal     activity."     U.S.S.G.
    § 1B1.3(a)(1)(B).    A conviction for conspiracy, however, "does not
    automatically mean that every conspirator has foreseen the total
    quantity of drugs involved in the entire conspiracy."                United
    States v. Smith, 
    13 F.3d 860
    , 867 (5th Cir.), cert. denied, ___
    U.S. ___, 
    114 S. Ct. 2151
    , 
    128 L. Ed. 2d 877
    (1994).            We have
    previously held that attributing the acts of others to a co-
    conspirator in sentencing requires (1) that the acts be reasonably
    foreseeable, and (2) that they be within the scope of the jointly
    undertaken criminal activity. See 
    Smith, 13 F.3d at 866
    (reversing
    defendant's sentence because district court erred in attributing
    drugs to defendant where defendant had not jointly undertaken the
    criminal activity involving those particular drugs); 
    Maseratti, 1 F.3d at 340
    (remanding for determination of each defendant's role
    in the conspiracy in order to determine the amount of drugs
    attributable to each).
    In this case, there was evidence that Anderson had been
    involved with the Buchanans since 1987.       Testimony indicated that
    Anderson always accompanied John Buchanan on his trips to deliver
    drugs in Austin, serving as John Buchanan's bodyguard and "right-
    hand man."   Officers testified that they had observed Anderson's
    maroon Cadillac parked in the Buchanans' driveway in Houston, and
    it was Anderson's car, driven by Anderson from Houston, that was
    -26-
    used to transport the 280 grams of crack cocaine recovered in
    Austin.    Judging from the record, we cannot say the district court
    erred in attributing the drugs seized from the Buchanan residence
    in Houston to Anderson.23 Anderson's involvement in this conspiracy
    seems to have been co-extensive with the Buchanans.               Having often
    transported drugs from the Buchanan residence to Austin, it was not
    only foreseeable that the Buchanans would have a significant amount
    of drugs in their Houston home, but the presence of those drugs
    fits squarely within the pattern of drug distribution evinced by
    the actions of the conspirators in this case.                    See U.S.S.G.
    § 1B1.3, comment. (n.2(ii)) ("In determining the scope of the
    criminal activity that the particular defendant agreed to jointly
    undertake . . . the court may consider any explicit agreement or
    implicit    agreement    fairly    inferred    from    the   conduct    of   the
    defendant and others.").          Accordingly, we affirm the district
    court's decision to attribute the cocaine seized in Houston to
    Anderson in calculating his base offense level, and uphold his
    sentence.24
    Anderson argues that further evidence of his lack of involvement with
    the drugs seized in Houston is the significant difference in chemical purity of
    those drugs as compared to the crack seized in Austin (80-85% pure in Austin, 62-
    70% pure in Houston). The divergence in purity between different quantities of
    drugs, however, will not negate a finding that the drugs are attributable to a
    co-conspirator if the test set forth in the guidelines is met. See 
    Smith, 13 F.3d at 864-65
    (upholding district court's decision to attribute quantity of
    drugs to a co-conspirator despite differences in the drugs' "color and purity"
    because the drugs were reasonably foreseeable and within the scope of the
    conspirators' agreement).
    We also reject Anderson's contention that the district court erred
    in admitting his prior drug possession convictions as evidence of intent or state
    of mind. 
    See supra
    Part IV(A). Anderson put his state of mind and intent into
    issue by pleading not guilty and claiming that he had not intended to possess the
    -27-
    VI
    For the foregoing reasons, we AFFIRM the convictions of all
    co-defendants.     We AFFIRM the sentences of Diana Buchanan, Vernon
    Bonner, and Fedell Anderson. We VACATE John Buchanan's sentence on
    counts three and four and REMAND for resentencing on whichever
    count the United States chooses to proceed with.               We AFFIRM John
    Buchanan's sentence in all other respects.
    crack cocaine or participate in the conspiracy.       The prior drug possession
    convictions, however, make it more likely that Anderson had knowledge of and
    intended to participate in the crimes committed by this group. See United States
    v. Willis, 
    6 F.3d 257
    , 262 (5th Cir. 1993) (holding prior drug convictions
    relevant to show that defendant had knowledge and intent necessary to possess
    drugs at issue in case); United States v. Gadison, 
    8 F.3d 186
    , 192 (5th Cir.
    1993) ("A prior conviction for possession of cocaine is probative of a
    defendant's intent when the charge is conspiracy to distribute."). We also
    reject Anderson's contention that because his prior conviction was six years old,
    it was too remote in time to have sufficient probative value to outweigh its
    prejudicial effect. See United States v. Rubio-Gonzales, 
    674 F.2d 1067
    , 1075
    (5th Cir. 1982) (allowing ten-year-old conviction to be admitted as relevant to
    knowledge). The district court carefully considered the possible prejudice of
    admitting the prior crimes evidence and determined that it did not substantially
    outweigh the evidence's probative value. The district court further mitigated
    any undue prejudice by carefully instructing the jury on how it could consider
    this evidence. For these reasons we cannot say that admitting these convictions
    for the limited purpose of showing Anderson's state of mind or intent constituted
    an abuse of discretion.
    -28-