United States v. Ortiz-Torres ( 2006 )


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  •           United States Court of Appeals
    For the First Circuit
    No. 03-2456
    UNITED STATES,
    Appellee,
    v.
    ORLANDO ORTIZ-TORRES, a/k/a Landy,
    a/k/a Orlando Torres-Ortiz,
    Defendant, Appellant.
    No. 03-2458
    UNITED STATES,
    Appellee,
    v.
    OMAR COSME-PIRI, a/k/a Chiquito
    Defendant, Appellant.
    No. 03-2534
    UNITED STATES,
    Appellee,
    v.
    RAYMOND TORRES-SANTIAGO,
    Defendant, Appellant.
    No. 03-2572
    UNITED STATES,
    Appellee,
    v.
    JOSÉ RENOVALES-VÉLEZ, a/k/a Pipe
    Defendant, Appellant.
    No. 04-1871
    UNITED STATES,
    Appellee,
    v.
    JULIO MATTEI-ALBIZU,
    Defendant, Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF PUERTO RICO
    [Hon. Daniel R. Dominguez, U.S. District Judge]
    Before
    Lipez, Circuit Judge,
    John R. Gibson, Senior Circuit Judge*
    and Howard, Circuit Judge.
    Mauricio Hernàndez-Arroyo for appellant Orlando Ortiz-Torres.
    Raúl S. Mariani-Franco for appellant Omar Cosme-Piri.
    Bruce Green for appellant Raymond Torres-Santiago.
    *
    Of the United States Court of Appeals for the Eighth Circuit,
    sitting by designation.
    José R. Olmo-Rodríguez for appellant Jose Renovales-Vélez.
    Luis M. Cháves-Ghigliotty for appellant Julio Mattei-Albizu.
    Nelson Pérez-Sosa, Assistant United States Attorney, with whom
    H.S. Garcia, United States Attorney, was on brief, for Appellee.
    May 26, 2006
    John R. Gibson, Circuit Judge.    Orlando Ortiz-Torres, Omar
    Cosme-Piri, Raymond Torres-Santiago, José Renovales-Vélez, and
    Julio Mattei-Albizu appeal their convictions and sentences for
    conspiracy to distribute multi-kilogram quantities of cocaine in
    violation of 
    21 U.S.C. §§ 841
    (a)(1) and 846.   We affirm.
    Appellants were members of a drug-trafficking organization
    that operated drug distribution points in and around La Plena Ward
    in Juana Díaz, Puerto Rico from 1994 to 2001.1       A grand jury
    indicted each of them with conspiring to distribute "multi-kilogram
    quantities" of heroin, cocaine, cocaine base, and marijuana, in
    violation of 
    21 U.S.C. §§ 841
    (a)(1) and 846, and with a forfeiture
    allegation of up to $1 million pursuant to 
    18 U.S.C. § 982
    .
    Appellant Mattei-Albizu entered a straight plea of guilty to
    conspiring to possess with intent to distribute and conspiring to
    distribute at least 3.5 kilograms but less than 5 kilograms of
    cocaine. After a jury was empaneled, the remaining appellants each
    pled guilty to conspiracy to possess with intent to distribute
    cocaine as part of a package plea agreement.
    Appellants raise numerous claims of error on appeal.   Cosme-
    Piri and Ortiz-Torres challenge their convictions on the ground
    1
    Because appellants' convictions and sentences followed
    admissions of guilt, we glean the pertinent facts from the change-
    of-plea colloquies, the plea agreements, the presentence reports,
    and the transcripts of the sentencing and change of plea hearings.
    See United States v. Colon-Solis, 
    354 F.3d 101
    , 102 (1st Cir.
    2004).
    -4-
    that their guilty pleas were not voluntary.                Cosme-Piri, Ortiz-
    Torres, Renovales-Vélez, and Mattei-Albizu raise an assortment of
    challenges to their sentences.        Lastly, each appellant requests a
    remand for sentencing in accordance with United States v. Booker,
    
    543 U.S. 220
     (2005).    We address each claim in turn.
    I.   Voluntary Guilty Plea
    Cosme-Piri and Ortiz-Torres ask us to vacate their convictions
    and remand their cases for trial on the ground that their guilty
    pleas were not voluntary.       While the entry of a guilty plea "does
    not preclude an attack on the plea's voluntariness," United States
    v. Sahlin, 
    399 F.3d 27
    , 31 (1st Cir. 2005), because neither
    appellant sought to withdraw his guilty plea before the district
    court, we review the district court's acceptance of their pleas for
    plain error.    United States v. Mescual-Cruz, 
    387 F.3d 1
    , 7 (1st
    Cir. 2004) (citing United States v. Vonn, 
    535 U.S. 55
    , 59 (2002)),
    cert. denied, 
    543 U.S. 1175
    , 1176 (2005).
    To establish that the district court committed error in
    accepting    their   guilty    pleas,       appellants     must   point   to     a
    "fundamental defect" in the change of plea hearing itself.                     See
    United States v. Bierd, 
    217 F.3d 15
    , 19 (1st Cir. 2000); see also
    Sahlin, 
    399 F.3d at 31
     (error must affect substantial rights).
    Appellants   argue   that     the   joint    change   of   plea   hearing      was
    fundamentally defective because it failed to ensure that their
    -5-
    guilty pleas, entered as part of a package plea agreement, were
    truly voluntary.    As in many such "package plea" arrangements, the
    government offered the entire group of defendants charged in
    connection with the La Plena drug point a favorable plea and
    sentencing   recommendation   on   the   condition   that   all   the   co-
    defendants enter guilty pleas.
    We have previously recognized that such package deals create
    a significant risk that one defendant will plead guilty against his
    will in order for his co-defendants to obtain the offered benefit.
    United States    v. Abbott, 
    241 F.3d 29
    , 34 (1st Cir. 2001); United
    States v. Martinez-Molina, 
    64 F.3d 719
    , 732-33 (1st Cir. 1995).
    Thus, we have crafted two safeguards designed to minimize this risk
    of coercion.    Mescual-Cruz, 
    387 F.3d at
    8 (citing Martinez-Molina,
    
    64 F.3d at 732-33
    ).      First, the prosecution should inform the
    district court that the defendant's guilty plea is part of a
    package deal.    
    Id.
       Second, the district court should carefully
    ascertain the voluntariness of the defendant's plea during the Rule
    11 colloquy, with an eye toward minimizing the risk of co-defendant
    coercion inherent in the package-plea context.        
    Id.
    The record of the Rule 11 proceeding below reflects that both
    safeguards were observed.     First, there is little doubt that the
    district court was fully aware that all the defendants, save for
    Mattei-Albizu, were entering their pleas as part of a package deal.
    At the joint change of plea hearing, in the presence of all
    -6-
    defendants and their respective counsel, the government disclosed
    to the court that the individual pleas were part of a package deal.
    Indeed, on several occasions throughout the change of plea hearing
    the district court specifically referred to the package nature of
    defendants' pleas.
    Second, the district court's Rule 11 inquiry was more than
    sufficient to guard against the risk of co-defendant coercion. The
    court individually questioned the defendants, asking whether they
    were threatened or coerced by "anyone" or "anybody" into entering
    their individual guilty pleas.          Although this alone was likely
    sufficient, see, e.g., Mescual-Cruz, 
    387 F.3d at 9
     ("anyone" or
    "anybody"); United States v. Sanchez-Barreto, 
    93 F.3d 17
    , 23 (1st
    Cir. 1996) ("anyone"), the court inquired further. It specifically
    named    each   co-defendant    and   asked   whether    any    of   them   had
    threatened or coerced Ortiz-Torres or Cosme-Piri into pleading
    guilty, thereby probing whether the increased likelihood of co-
    defendant coercion in the package-plea context had affected either
    of their decisions to plead guilty.
    In light of these additional safeguards, the district court
    was     entitled   to   rely   upon   Cosme-Piri's      and    Ortiz-Torres's
    representations, made under oath, that they were neither coerced
    nor threatened into making their pleas.              See United States v.
    Marrero-Rivera, 
    124 F.3d 342
    , 349 (1st Cir. 1997).                   The only
    indication of the contrary comes from Cosme-Piri's and Ortiz-
    -7-
    Torres's general allegations of coercion on appeal, which are
    insufficient, absent record support, to invalidate their guilty
    pleas.       See Sanchez-Barreto, 
    93 F.3d at 23
    .           Finding no error,
    plain or otherwise, in the district court's acceptance of their
    guilty       pleas,     we    affirm    Ortiz-Torres's     and    Cosme-Piri's
    convictions.
    II.   Sentencing Issues
    The entry of a guilty plea does not itself waive a defendant's
    right       to   challenge   the   ensuing    sentence.    United      States   v.
    Gonzalez-Mercado, 
    402 F.3d 294
    , 301 (1st Cir. 2005). Renovales-
    Vélez, Cosme-Piri, Ortiz-Torres, and Mattei-Albizu advance such
    challenges.
    A.         Renovales-Vélez
    Renovales-Vélez         argues   that   the   district   court    erred   by
    failing to impose his federal sentence concurrently with his
    undischarged term of state imprisonment as required under Guideline
    §5G1.3(b) (2002).2           Like his co-defendants, Renovales-Vélez was
    2
    Effective November 1, 2003, a little more than one month
    after Renovales-Vélez's September 30, 2003 sentencing, Guideline §
    5G1.3(b) was amended. Because neither party argues otherwise, we
    assume that the version in effect at the time of Renovales-Vélez's
    sentencing applies. United States v. Harotunian, 
    920 F.2d 1040
    ,
    1041-42 (1st Cir. 1990) ("[A]       defendant is to be punished
    according to the guidelines in effect at the time of sentencing.");
    see also United States v. Rouse, 
    362 F.3d 256
    , 261-62 (4th Cir.
    2004) (holding that 2003 amendment to Guideline § 5G1.3(b) does not
    apply retroactively), cert. denied, 
    543 U.S. 867
     (2004).
    -8-
    charged with distributing more than five kilograms of both cocaine
    and cocaine base, more than one kilogram of heroin, and more than
    fifty pounds of marijuana.   However, also like all but one of his
    co-defendants,   Renovales-Vélez    entered   into   a   plea   agreement,
    pursuant to which he pled guilty to conspiracy to possess with
    intent to distribute at least 150 kilograms of cocaine, in return
    for the government's recommendation of 252 months' imprisonment.
    The parties further agreed that if Renovales-Vélez's presentence
    investigation revealed convictions for offenses that took place
    during the time period of the conspiracy, they would not be counted
    in determining his criminal history category.
    Ultimately, Renovales-Vélez's presentence report listed four
    prior drug-related convictions in the Superior Court of Puerto
    Rico: on December 21, 1994, Renovales-Vélez was arrested for
    possession of cocaine with intent to distribute for which he was
    sentenced to three years' imprisonment; on January 25, 1995, he was
    arrested and charged with the second and third offenses, possession
    of marijuana and heroin with the intent to distribute, for which he
    was sentenced to a total of six years' imprisonment; and on
    February 23, 1995, he was arrested and charged with possession with
    the intent to distribute cocaine, for which he was sentenced to two
    years' imprisonment.3   Although he received a sentence of eleven-
    3
    The sentences for all four convictions were imposed on May
    13, 1996 and ordered to run consecutively.
    -9-
    years' imprisonment on the four offenses, Renovales-Vélez had
    served only 35 months of that sentence before being transferred to
    federal custody to face the instant charges.
    Since his prior drug offenses occurred during the period of
    the charged cocaine trafficking conspiracy, the presentence report
    recommended that they be treated as overt acts, resulting in zero
    criminal history points. Consistent with the recommendation of the
    presentence report and the agreement of the parties, the district
    court assessed Renovales-Vélez zero criminal history points for his
    prior convictions, leaving him with a criminal history category of
    I.   Recognizing that Renovales-Vélez had been incarcerated due to
    these prior convictions during a significant portion of the charged
    conspiracy, the district court found him to be less culpable than
    his co-defendants, and accordingly, sentenced him to 238 months'
    imprisonment, rather than the 252-month sentence provided for in
    the plea agreement.4
    On appeal Renovales-Vélez argues that the district court was
    required      under   Guideline   §5G1.3(b)(2002)   to   run   his   federal
    4
    The sentencing court stated:
    And the Court, because this defendant spent a
    considerable amount of time in jail during the
    conspiracy, and his participation is less than the other
    gentlemen who have been also sentenced by this Court,
    therefore, sentences him within the guideline but to a
    lower amount than recommended in the plea . . . .
    -10-
    sentence concurrently with the undischarged portion of his state
    term of imprisonment. Because, as Renovales-Vélez concedes, he did
    not object to his sentence on this ground, we employ plain error
    review. United States v. Cruz, 
    213 F.3d 1
    , 4 (1st Cir. 2000)
    (citing United States v. Olano, 
    507 U.S. 725
    , 733 (1993)).                     To
    decide whether the district court erred in imposing his sentence,
    we must determine whether his state offenses were "fully taken into
    account"      in    determining     his   offense   level.   See   Guideline   §
    5G1.3(b)(2002).5       If they were, then Guideline § 5G1.3(b) required
    the   court    to    impose   the    federal     term   concurrently   with   the
    undischarged state term, which would have reduced the federal
    sentence by approximately 97 months—the difference between the
    entire eleven-year state term and the 35 months Renovales-Vélez had
    served on it before being transferred to federal custody.                     See
    United States v. Caraballo, 
    200 F.3d 20
    , 28-29 (1st Cir. 1999); see
    also U.S.S.G. § 5G1.3(b), cmt. (n.2) (2002).
    5
    At the time of sentencing, Guideline § 5G1.3 provided:
    (b) If . . . the undischarged term of imprisonment
    resulted from offense(s) that have been fully taken into
    account in the determination of the offense level for the
    instant offense, the sentence for the instant offense
    shall be imposed to run concurrently to the undischarged
    term of imprisonment.
    (c) (Policy Statement) In any other case involving an
    undischarged term of imprisonment, the sentence for the
    instant offense may be imposed to run concurrently,
    partially concurrently, or consecutively to the prior
    undischarged term of imprisonment to achieve a reasonable
    punishment for the instant offense.
    -11-
    Renovales-Vélez argues that because his state court offenses
    were treated as overt acts in furtherance of the conspiracy, they
    were treated as relevant conduct under Guideline § 1B1.3, and
    therefore "fully taken into account" under Guideline § 5G1.3(b).
    Because   Guideline   §    5G1.3   "is   directed   at   the   prevention   of
    duplicative sentencing for any particular conduct," we held in
    Caraballo that "only relevant conduct that has resulted in-or that
    could have resulted in-a change in the instant offense's            'offense
    level' is 'fully taken into account' under § 5G1.3(b)."                     Id.
    (emphasis in original).      However, we also reasoned that mandatory
    concurrent sentencing would be inappropriate where the defendant's
    undischarged prison term was for multiple offenses, but only some
    of those offenses were "fully taken into account" in determining
    the instant offenses's offense level, since in such a situation the
    instant offense may involve conduct unrelated to the conduct
    underlying the undischarged term. Id. at 28. Accordingly, we held
    that "[w]hen some of the conduct underlying an undischarged term
    impacted the offense level, but other aspects of that conduct did
    not," the district court is free, under § 5G1.3(c), to choose
    wholly concurrent, partially concurrent, or wholly consecutive
    sentencing.   Id. at 29.
    In the instant case, we face precisely this kind of "multiple
    offense" situation.       Renovales-Vélez's undischarged term of state
    imprisonment was the result of four separate offenses.                  Even
    -12-
    assuming that, in reaching its drug quantity determination and
    corresponding offense level, the district court took into account
    his two prior cocaine offenses,6 it could not have taken into
    account   offenses   for   possession       of   marijuana   with    intent   to
    distribute   and   possession   of    heroin,     since   these     convictions
    punished conduct unrelated to that punished by the instant cocaine
    trafficking conviction.     Thus, as in Caraballo, Renovales-Vélez's
    undischarged state term was the result of multiple offenses, some
    of which may have been taken into account in setting his offense
    level for the federal conviction, while the rest clearly were not.
    
    200 F.3d at 27-28
    .    "In short, because not all of the conduct from
    which [Renovales-Vélez's Puerto Rico] term resulted influenced his
    ultimate offense level, not all of it was 'fully taken into
    account' under § 5G1.3(b). The court below thus correctly chose to
    apply § 5G1.3(c) instead."      Id. at 29.
    Thus proceeding under subsection (c), the district court
    6
    The record does not conclusively demonstrate that the
    district court took into account the unspecified quantities of
    cocaine involved in Renovales-Vélez's prior cocaine offenses in
    determining that he was responsible for at least 150 kilograms of
    cocaine and assessing the corresponding offense level of 38. See
    U.S.S.G. § 2D1.1 (2002).    Indeed, the district court stated at
    sentencing that it was specifically relying on Renovales-Vélez's
    admission in his plea that he was guilty of conspiring to possess
    with intent to distribute "at least 150 kilograms of cocaine" and
    his specific stipulation to an offense level of 38 in his plea
    agreement. However, because we conclude that even if his prior
    cocaine offenses were taken into account, Renovales-Vélez
    nonetheless is not entitled to wholly concurrent sentencing, we
    need not resolve this question.
    -13-
    enjoyed the discretion to impose a wholly concurrent, partially
    concurrent, or wholly consecutive sentence, so long as the end
    result was reasonable.       See United States v. Vazquez-Alomar, 
    342 F.3d 1
    , 5 (1st Cir. 2003) (quoting Caraballo, 
    200 F.3d at 28-29
    ).
    The court exercised this discretion by sentencing Renovales-Vélez
    to a term of imprisonment 14 months less than that stipulated to in
    the plea agreement, which had the effect of imposing part of his
    federal sentence concurrently with his undischarged state sentence,
    while imposing the remainder consecutively. The court specifically
    stated that it was imposing this sentence in recognition of the
    time Renovales-Vélez was incarcerated on his prior drug offenses,
    thereby furthering the underlying policy of Guideline § 5G1.3 in
    preventing "duplicative sentencing for any particular conduct."
    Caraballo, 
    200 F.3d at 27
    .       Renovales-Vélez makes no argument that
    the district court abused its discretion in doing so, nor does he
    claim that his sentence is otherwise unreasonable.               See Vazquez-
    Alomar,   
    342 F.3d at 5
    ;   see   also   Caraballo,   
    200 F.3d at 29
    (affirming district court's exercise of discretion under Guideline
    § 5G1.3(c) to run part of defendant's federal sentence concurrent
    with undischarged state sentence).            Accordingly, we affirm his
    sentence.7
    7
    Had Renovales-Vélez been sentenced after the November 1, 2003
    effective date of the 2003 amendments to § 5G1.3(b), which
    jettisoned the somewhat confusing "fully taken into account"
    language as well as any reference to "undischarged" terms of
    imprisonment, we would reach the same result.          The amended
    -14-
    B.   Cosme-Piri
    1. Drug quantity
    Cosme-Piri argues that the district court sentenced him based
    on a flawed drug-quantity calculation.         Because he objected to the
    calculation   at   sentencing,   we   review   any   legal   error   of   the
    district court de novo, United States v. Barbour, 
    393 F.3d 82
    , 91-
    92 (1st Cir. 2004), cert. denied, 
    126 S. Ct. 212
     (2005), while
    reviewing its factual findings for clear error.         United States v.
    Santos, 
    357 F.3d 136
    , 140 (1st Cir. 2004).
    Cosme-Piri stipulated to the scope of the conspiracy's drug
    trafficking operations as well as to the amount of narcotics for
    which he was personally responsible.8          Based on this stipulated
    subsection requires concurrent sentencing:
    If . . . a term of imprisonment resulted from another
    offense that is relevant conduct to the instant offense
    of conviction under the provisions of subsections (a)(1),
    (a)(2), or (a)(3) of § 1B1.3 (Relevant Conduct) and that
    was the basis for an increase in the offense level for
    the instant offense under Chapter Two (Offense Conduct)
    or Chapter Three (Adjustments) . . . .
    U.S.S.G. § 5G1.3(b) (2003) (emphasis added). Under this framework,
    Renovales-Vélez would likewise not be entitled to concurrent
    sentencing because he fails to demonstrate that his prior cocaine-
    related offenses were "the basis for an increase" in the drug
    quantity determination underlying the offense level for the instant
    cocaine trafficking offense.
    8
    According to the stipulated facts in the plea agreement, each
    month for the duration of the conspiracy the organization sold at
    least five kilograms of cocaine, one kilogram of heroin, more than
    fifty grams of cocaine base, and approximately five pounds of
    -15-
    drug quantity, the parties agreed that the applicable sentencing
    range was from 235 to 293 months' imprisonment, and the government
    agreed to recommend a sentence of 252 months.          At the change of
    plea hearing, Cosme-Piri acknowledged these stipulations and stated
    that he understood the terms of the plea agreement.
    At sentencing, counsel for Cosme-Piri objected to the offense-
    level computation in the presentence investigation report.              He
    requested   that   the   district     court   lower   the    drug-quantity
    calculation because Cosme-Piri had participated in the conspiracy
    for a shorter period of time than other co-conspirators whose plea
    agreements provided for lesser drug quantities.             The government
    responded that Cosme-Piri had specifically stipulated in his plea
    agreement to the amount of cocaine for which he personally was
    responsible and this amount was not tied to the length of his
    involvement in the conspiracy.
    The court rejected Cosme-Piri's request and sentenced him to
    252 months' imprisonment, as provided in the plea agreement.           The
    court explained that other co-defendants had received drug-quantity
    reductions in return for their stipulation to leadership role
    enhancements, and not because their involvement in the conspiracy
    was any less than that originally contemplated in their plea
    marijuana.   Notwithstanding these conspiracy-wide amounts, the
    parties agreed that Cosme-Piri would be held responsible for "not
    less than one hundred fifty kilograms of cocaine" and that "such
    amount should be the proper drug quantity to be considered" for
    sentencing purposes.
    -16-
    agreements.    This    trade-off     was   necessary   to   ensure    that   the
    government's sentencing recommendation would remain 252 months' as
    stipulated in the plea agreements.
    Cosme-Piri argues that the district court erred in sentencing
    him based on the stipulated drug quantity instead of making an
    individualized finding as to the amount of drugs specifically
    attributable to him.      In support, he relies upon United States v.
    Colon-Solis, 
    354 F.3d 101
    , 102-03 (1st Cir. 2004), which held that
    a   district   court   could   not    automatically    shift   a     stipulated
    conspiracy-wide drug-quantity amount to an individual conspirator
    in order to trigger a statutory mandatory minimum.
    However, this reliance is misplaced, since the defendant in
    Colon-Solis had stipulated only to the conspiracy-wide drug amount,
    and there remained an "open question" as to whether he personally
    was responsible for a lesser quantity.            See 
    id. at 102
    .        Here,
    Cosme-Piri's stipulation as to the amount of drugs specifically
    attributable to him left no such open question.                 Although the
    district court was not required to follow this stipulation, it was
    entitled to rely upon it in determining the appropriate sentence,
    United States v. Teeter, 
    257 F.3d 14
    , 28 (1st Cir. 2001), and such
    reliance is not clearly erroneous, see United States v. Santos, 
    357 F.3d 136
    , 140-41 (1st Cir. 2004).9
    9
    Nor does this court's recent decision in United States v.
    Rodriguez-Gonzalez, 
    433 F.3d 165
    , 168 (1st Cir. 2005), call for a
    contrary result.   Unlike the "possibly suspect stipulation" in
    -17-
    Cosme-Piri's second attack on the drug-quantity calculation
    focuses on the drug-quantity reductions granted to some of his co-
    conspirators.         Citing no legal authority in support, Cosme-Piri
    claims that, notwithstanding his plea agreement, he is entitled to
    a similar reduction because the district court's stated reasons for
    the reductions were arbitrary and not related to facts proved
    beyond a reasonable doubt.10
    A review of the record convinces us that the district court's
    drug-quantity determination as to Cosme-Piri was anything but
    arbitrary; rather, it reflected, to the kilogram, the quantity
    Rodriguez-Gonzalez, there was nothing suspect about Cosme-Piri's
    drug-quantity stipulation because he did not dispute it at the
    change of plea hearing or at sentencing. See 
    id. at 166-67
    .
    10
    The discussion before the district court was, in pertinent
    part:
    MR. PÉREZ [counsel for Cosme-Piri]: We were referring to
    the fact that he was -- this will be 150 kilograms. And
    his involvement was for a shorter time than the rest of
    the individuals involved. And we thought that he should
    be benefitting from that, from the reduced amount that
    some of them have been granted.
    THE COURT: But some of them have been granted reduced
    amounts because they're going to accept the status or
    because of something else. Wasn't this what you agreed
    to in the very beginning? . . . .
    [W]asn't this a reverse, sort or, agreement where
    you all agreed on the final number? . . . What the Court
    is doing is adding two points [to another co-defendant]
    because he is a leader, and on the other hand reducing
    the drugs a little bit so that you all end up in the same
    place which was what you had bargained for.
    -18-
    Cosme-Piri admitted to in his plea agreement.         Once again, the
    court was not bound by this admission, and could have determined
    that he was responsible for less.        Its refusal to do so was not
    clearly erroneous.     See Teeter, 
    257 F.3d at 28
    ; Santos, 
    357 F.3d at 140
    .
    2. Term of Supervised Release
    Cosme-Piri advances two arguments in favor of vacating the
    supervised release term of his sentence. First, he claims that the
    five-year term in the written judgment violated his right to be
    present at sentencing because the district court had announced a
    contrary, three-year term, at sentencing.11        Second, Cosme-Piri
    argues that the drug testing condition of his supervised release
    improperly delegates authority to the probation officer.
    We review Cosme-Piri's right to be present claim for harmless
    error.      United States v. Meléndez-Santana, 
    353 F.3d 93
    , 108 (1st
    Cir. 2003), overruled on other grounds by United States v. Padilla,
    
    415 F.3d 211
     (1st Cir. 2005) (en banc).      "A criminal defendant has
    the right to be present at his own sentencing."      United States v.
    Vega-Ortiz, 
    425 F.3d 20
    , 22 (1st Cir. 2005).      Thus, if a district
    court's oral sentence materially conflicts with its subsequent
    11
    At sentencing the district judge stated, "Upon release from
    confinement the defendant [Cosme-Piri] shall be placed on
    supervised release for a term of at least three years under
    [certain] terms and conditions." (Emphasis added). However, the
    written judgment stated, "Upon release from imprisonment, the
    defendant shall be on supervised release for a term of Five (5)
    YEARS." (Emphasis added).
    -19-
    written expression, the tendency is to honor the oral.                         
    Id.
    (quoting United States v. Cali, 
    87 F.3d 571
    , 579 (1st Cir. 1996)).
    However, no material conflict exists where the defendant is on
    notice that he is subject to the terms included in the written
    judgment. Vega-Ortiz, 
    425 F.3d at
    22-23 (citing United States v.
    Tulloch, 
    380 F.3d 8
    , 12 (1st Cir. 2004)); see also United States v.
    Ferrario-Pozzi,   
    368 F.3d 5
    ,   8-9    (1st   Cir.     2004)   (finding    no
    material   conflict   between    oral      sentence   and    written   judgment
    imposing $3.7 million forfeiture where defendant had notice that
    forfeiture of at least two million dollars would be component of
    sentence).
    While there was surely a conflict between the district court's
    oral pronouncement of a three-year term of supervised release and
    the five-year term included in the written judgment, there is
    overwhelming evidence that Cosme-Piri knew well before the written
    judgment was issued that he faced a five-year term of supervised
    release and that the three-year term was announced in error.
    First, and foremost, the statute criminalizing the drug offense to
    which Cosme-Piri pled guilty mandates a supervised release term of
    "at least five-years."     See 
    21 U.S.C. § 841
    (b)(1)(A) (emphasis
    added).    While the mere existence of this mandatory minimum may
    provide sufficient "constructive notice" that a five-year term
    would apply, see Tulloch, 
    380 F.3d at 11-14
    , the five-year term was
    also included in the plea agreement, explained to Cosme-Piri and
    -20-
    accepted by him at the change of plea hearing, and reiterated in
    the presentence investigation report.
    At no point did Cosme-Piri object to the length of the
    supervised release term.        When the district court stated that it
    was imposing a three-year term, in contravention of the statutory
    minimum, the plea agreement, and the presentence investigation
    report, it became incumbent upon Cosme-Piri to request further
    clarification, which he did not do.          See Tulloch, 
    380 F.3d at
    14
    n.7.        Indeed, the need for clarification was especially acute in
    this case, since the district court's oral pronouncement of a
    three-year term at sentencing hearing was immediately preceded by
    its reference to a five-year term.12        In this context, the district
    court's isolated reference to a three-year term appears to have
    been    an     inadvertent   mistake.      Although   this   reference   was
    erroneous, the error was harmless in light of the overwhelming
    evidence that Cosme-Piri had notice that a five-year term would
    apply. See Vega-Ortiz, 
    425 F.3d at 21-23
    .
    12
    The district court stated:
    Based on a total offense level of 38, and criminal
    history category one, the guideline imprisonment range in
    this particular case is from 235 to 293 months, with a
    fine range of twenty-five thousand to four million, plus
    a supervised release term of not more than five years.
    The Court will follow the plea agreement as
    stipulated by the parties and sentence the defendant
    accordingly.
    (Emphasis added).
    -21-
    Cosme-Piri's       second   challenge     to   the   term   of   supervised
    release likewise fails.          Both at sentencing and in its written
    judgment, the district court stated that Cosme-Piri's term of
    supervised release would be subject to the following condition:
    The defendant . . . shall submit to a drug test within
    fifteen (15) days of release on supervised release, and
    thereafter when so requested by the U.S. Probation
    Officer.
    Cosme-Piri     argues    that    this     condition   improperly      delegates
    authority to the probation officer to determine the frequency and
    quantity of drug testing.
    In United States v. Meléndez-Santana, 
    353 F.3d 93
     (1st Cir.
    2003), a panel of this court held that a district court commits
    plain error by delegating to a probation officer the authority to
    determine a defendant's drug-testing regimen while on supervised
    release. 
    Id.
     at 106 (citing 
    18 U.S.C. § 3583
    (d) (2000)).13 Sitting
    en banc, our court overruled Meléndez-Santana to the extent that it
    held that such an improper delegation would automatically rise to
    the level of plain error, although the defendant was free to argue
    13
    
    18 U.S.C. § 3583
    (d) (2000) provides in relevant part:
    The court shall also order, as an explicit condition of
    supervised release, that the defendant refrain from any
    unlawful use of a controlled substance and submit to a
    drug test within 15 days of release on supervised release
    and at least 2 periodic drug tests thereafter (as
    determined by the court) for use of a controlled
    substance.
    (Emphasis added).
    -22-
    that the plain error requirements were met in the individual case.
    United States v. Padilla, 
    415 F.3d 211
    , 220-23 (1st Cir. 2005) (en
    banc).    For the reasons stated in Padilla, we conclude that the
    improper delegation that occurred here does not rise to the level
    of plain error, since it neither affects substantial rights nor
    "impugn[s] the fairness, integrity or public reputation of the
    criminal proceeding as a whole."            
    Id. at 220-23
    ; see also Vega-
    Ortiz, 
    425 F.3d at 22
    ; United States v. Sanchez-Berrios, 
    424 F.3d 65
    , 81-82 (1st Cir. 2005), cert. denied, 
    126 S. Ct. 1105
     (2006).
    Accordingly, we decline to correct it.
    C.    Ortiz-Torres
    Ortiz-Torres claims that, pursuant to Guideline § 3E1.1(a)
    (2002), the district court should have awarded him a three-level
    reduction for acceptance of responsibility instead of the two-level
    reduction he received. It was Ortiz-Torres's burden to demonstrate
    that he was entitled to the additional point reduction, and we will
    reverse   the   withholding     of   such   a   reduction    only   if   clearly
    erroneous.      United States    v. Baltas, 
    236 F.3d 27
    , 37 (1st Cir.
    2001).    Initially, we recognize, as did the district court, that
    Ortiz-Torres's request for a three-level reduction contradicts his
    stipulation     to   a   two-level   reduction    in   his   plea   agreement.
    However, like the district court, we conclude that even in the
    absence of this stipulation, Ortiz-Torres was not entitled to a
    three-level reduction because his guilty plea was untimely.
    -23-
    A defendant qualifies for a two-level reduction for acceptance
    of   responsibility    under   Guideline   §   3E1.1(a)   if   he   "clearly
    demonstrates acceptance of responsibility for his offense."                A
    defendant may receive an additional level reduction by, inter alia,
    "timely notifying authorities of his intention to enter a plea of
    guilty, thereby permitting the government to avoid preparing for
    trial and permitting the government and the court to allocate their
    resources efficiently." U.S.S.G, § 3E1.1(b)(2) (2002). As we have
    previously   recognized,       "[t]he   two-level    reduction      is   for
    contrition," while "the third level is for helping the authorities
    save resources."      United States v. Hines, 
    196 F.3d 270
    , 274 (1st
    Cir. 1999); see also U.S.S.G. § 3E1.1, cmt. (n.2) (2002).
    Ortiz-Torres argues that his acceptance of responsibility was
    sufficiently timely and beneficial to the government to warrant a
    three-level reduction in light of the numerous witnesses and
    anticipated length of the trial the government and district court
    were able to avoid.     To earn a three-level reduction, a defendant
    must give notice of his intent to plead guilty "at a sufficiently
    early point in the process so that the government may avoid
    preparing for trial," which will usually be "particularly early in
    the case."   U.S.S.G. § 3E1.1, cmt. n.6 (2002).           Ortiz-Torres and
    the bulk of his indicted co-conspirators entered into the package
    plea deal after a jury had already been selected; the district
    court concluded that this was not early enough in the process to
    -24-
    merit a three-level reduction.14 This determination was not clearly
    erroneous. See United States v. Donovan, 
    996 F.2d 1343
    , 1345 (1st
    Cir.    1993)     (sustaining      denial    of    three-level     reduction   for
    defendant who pled guilty on the eve of trial).
    D.      Mattei-Albizu
    Unlike his co-defendants, Mattei-Albizu was not a party to the
    package plea agreement.            Instead, he entered a straight plea of
    guilty to conspiring to sell five kilograms or more of cocaine, as
    alleged in the indictment, an offense that carried a statutory
    minimum sentence of ten years.                   See 
    21 U.S.C. § 841
    (b)(1)(A)
    (2000).       He also admitted to participating in the conspiracy from
    1997 until his September 2001 arrest.
    The government stated at the change of plea hearing that if
    the    case     had   gone   to   trial,    it    would   have   proven   beyond   a
    reasonable doubt that Mattei-Albizu conspired to distribute in
    excess of 150 kilograms of cocaine and that he possessed a firearm
    in connection to the charged drug trafficking offense.                     Mattei-
    Albizu requested and received an evidentiary hearing to contest
    these sentencing factors. At the hearing, the government presented
    14
    As the district court explained:
    If the Court were to grant you three points that would
    mean that everyone would wait until the jury is selected.
    And the law is clear that three points are granted only
    if it is timely. And a plea entered after the jury has
    been selected is definitely not timely.
    -25-
    the testimony of two witnesses.        The first was Victor Iglesias-
    Moreno, a task force agent with the Ponce, Puerto Rico Drug
    Enforcement Agency, who had investigated the La Plena drug point.
    The second witness was Josué Camacho-Aponte, an unindicted co-
    conspirator testifying as a material witness for the government,
    who had participated in the La Plena drug point from 2000-2001.
    Mattei-Albizu presented three witnesses to rebut any evidence that
    he participated in a homicide.
    Following the evidentiary hearings, the district court imposed
    a two-level enhancement under Guideline § 2D1.1(b)(1)(2002) for
    possession of a dangerous weapon during the commission of a drug-
    trafficking offense, determined that Mattei-Albizu was responsible
    for in excess of 150 kilograms of cocaine,         and granted him a two-
    level reduction for acceptance of responsibility under Guideline §
    3E1.1(a)(2002).       Based on a total offense level of 38 and a
    criminal    history    category   of   IV,   the   applicable   guideline
    imprisonment range was 324 to 405 months.          See Guideline § 2D1.1.
    (2002).    The district court sentenced Mattei-Albizu to 324 months'
    imprisonment, the bottom of the guidelines range.
    Mattei-Albizu contends that the drug-quantity determination
    and firearm enhancement were unwarranted and that the district
    court's criminal history calculation was in error.         We review the
    district court's interpretation of the sentencing guidelines de
    novo and its findings of fact for clear error.         United States   v.
    -26-
    Caldwell, 
    358 F.3d 138
    , 142 (1st Cir. 2004).
    1.   Firearm enhancement
    Mattei-Albizu challenges the two-level enhancement he received
    for possession of a dangerous weapon during the commission of a
    drug trafficking offense on the ground that the government failed
    to   establish   that   it   was   reasonably   foreseeable     to   him   that
    firearms would be possessed in furtherance of the conspiracy.               See
    U.S.S.G. § 2D1.1(b)(1) (2002).           He argues that the government
    failed to prove that he was involved in any of the murders alleged
    to have been committed by members of the La Plena drug trafficking
    organization and that the district court found at sentencing that
    there was insufficient evidence to link him to the murders.                  He
    claims that without such proof the district court could not impose
    the two-level enhancement for possession of a dangerous weapon.
    Mattei-Albizu's argument would gain greater traction if the
    government had stuck to its initial position: seeking a dangerous
    weapon enhancement based on proof that he was involved in a drug-
    related murder committed in furtherance of the charged conspiracy.
    However,   it    abandoned    that     theory   and   instead    sought     the
    enhancement under Guideline § 2D1.1(b)(1) by proving that "it was
    reasonably foreseeable that a co-conspirator would possess a gun in
    furtherance of the criminal activity." United States v. Casas, 
    356 F.3d 104
    , 129 (1st Cir. 2004); see also United States v. May, 
    343 F.3d 1
    , 7 (1st Cir. 2003).         Thus, the question was not, as Mattei-
    -27-
    Albizu now argues, whether the government was able to prove his
    involvement in a murder, but rather, whether it was reasonably
    foreseeable to him that weapons would be used in furtherance of the
    conspiracy.
    The district court made a finding of reasonable forseeability
    here, stating that it had "plenty of evidence" from which to
    conclude that weapons were used by members of the conspiracy and
    that this use of weapons was foreseeable to Mattei-Albizu.    Agent
    Iglesias-Moreno testified that members of the La Plena organization
    carried a variety of weapons and handguns, with sellers carrying
    weapons for "keeping everything under control" at the drug point,
    and that he had seen weapons seized by police from members of the
    organization.   Unindicted co-conspirator Camacho-Aponte testified
    that he and Mattei-Albizu were drug sellers, that sellers were
    always armed at the drug point, and that he personally saw Mattei-
    Albizu carrying weapons on several occasions when the two went out
    "hunting" for members of rival drug gangs in order to kill them.
    From this testimony, the district court could have concluded that
    it was reasonably foreseeable to Mattei-Albizu that a dangerous
    weapon would be possessed in furtherance of the conspiracy.
    Pointing to Camacho-Aponte's criminal record, his hope of
    obtaining a more lenient sentence in cases pending against him in
    state court, and his desire to deter federal authorities from
    filing charges against him for his admitted participation in a
    -28-
    drug-related murder, Mattei-Albizu argues that Camacho-Aponte's
    testimony should have been completely disregarded as unreliable or,
    at the very least, considered with caution.                 It is for the
    sentencing court to assess the credibility of the witness, and it
    is the for the appellate court to defer to that assessment unless
    it is clearly erroneous.         See, e.g., United States v. Nunez, 
    19 F.3d 719
    , 724 (1st Cir. 1996) (citing United States v. Brum, 
    948 F.2d 817
    , 819 (1st Cir. 1991)); see also 
    18 U.S.C. § 3742
     (e)
    (stating that "court of appeals shall give due regard to the
    opportunity of the district court to judge the credibility of the
    witnesses").      Indeed, in this case the district court specifically
    credited Camacho-Aponte's testimony due to his personal involvement
    in the illegal activities to which he testified, despite the
    court's   frank    recognition    of    the   negative   credibility   issues
    surrounding the testimony.15           In light of the district court's
    careful consideration of Camacho-Aponte's credibility, we cannot
    15
    The district court repeatedly referred to Camacho-Aponte as
    a "bad hombre" who "admitted to murders in front of me" and
    recognized that Camacho-Aponte had not been charged in the murder
    to which he admitted participating. In one exchange with defense
    counsel in this regard, the court stated:
    I am very aware that the witness produced by the United
    States, Mr. Camacho, would not qualify to be working in
    the last ten years with Mother Teresa in Calcutta, nor
    with Sister Isolina in Ponce. These were tough hombres
    working together selling drugs, and they were armed
    pursuant to the testimony of Mr. Camacho.
    -29-
    conclude that it was clear error for the court to rely upon it in
    making its dangerous weapon finding.        See, e.g., United States v.
    Whalen, 
    82 F.3d 528
    , 531 (1st Cir. 1996) (holding district court's
    finding   not    clearly   erroneous   despite   crediting   of   testimony
    district court characterized as problematic).
    2.    Drug quantity
    Mattei-Albizu contends that there was insufficient evidence to
    support the district court's determination that he should be held
    responsible for 150 kilograms of cocaine, and therefore, he should
    be held responsible only for the amount he admitted to at his
    change of plea hearing.        As an admitted participant in a drug
    trafficking     conspiracy,    Mattei-Albizu     is    responsible   under
    Guideline § 1B1.3 for drugs he himself sold, transported, or
    negotiated, as well as for drug quantities attributable to others
    that are reasonably foreseeable to him in furtherance of the
    conspiracy.     See U.S.S.G. § 1B1.3 cmt. (n.2) (2002); May, 
    343 F.3d at 6
    ; United States v. Rivera-Maldonado, 
    194 F.3d 224
    , 228 (1st
    Cir. 1999).     The district court's finding as to the amount of drugs
    reasonably foreseeable to Mattei-Albizu need only be supported by
    a preponderance of the evidence and need not be exact so long as
    the approximation represents a reasoned estimate. United States v.
    Santos, 
    357 F.3d 136
    , 141 (1st Cir. 2004).            We will set aside a
    drug-quantity calculation only if clearly erroneous; if there are
    two reasonable views of the record, the district court's choice
    -30-
    between the two cannot be considered clearly erroneous.                  
    Id.
    Mattei-Albizu       argues    that     the     testimony    at    sentencing
    regarding the conspiracy-wide drug-quantity was too inconsistent,
    and hence, too unreliable, to support an individualized drug-
    quantity finding.        Specifically, he points to the wide variance
    between the conspiracy-wide amounts testified to by Agent Iglesias-
    Moreno and co-conspirator Camacho-Aponte. Though the two witnesses
    provided differing quantities, both testified to amounts greater
    than the amount the district court attributed to Mattei-Albizu.
    Based   on   drug    seizures    by     other    agents    and   information
    provided by Camacho-Aponte, Agent Iglesias-Moreno testified that
    approximately two kilos each of heroin, cocaine and crack were sold
    out of the La Plena drug point each week.                      From this, Agent
    Iglesias-Moreno estimated that from 1997 until 2001, the period in
    which Mattei-Albizu admitted to participating in the conspiracy, at
    least five hundred kilos of cocaine were distributed at La Plena.
    However, Camacho-Aponte testified that he, like Mattei-Albizu and
    other sellers at La Plena, sold one kilogram each of heroin,
    cocaine, and crack every eight days.              The government concedes that
    an extrapolation of Camacho-Aponte's testimony yields a total of
    approximately     45   kilograms     of    each    narcotic    per    year,    which
    multiplied by the four to five years Mattei-Albizu admitted to
    being a member of the conspiracy, yields an amount between 180 and
    225 kilograms of each narcotic, a significantly lower total than
    -31-
    the "at least 500 kilograms" testified to by Agent Iglesias-Moreno.
    The district court recognized that the drug quantity testified
    to by Agent Iglesias was more than double that testified to by
    Camacho-Aponte     at   the     evidentiary    hearing.         However,   it
    specifically   credited       Camacho-Aponte's    testimony     and   adopted
    Camacho-Aponte's drug-quantity estimate in finding that Mattei-
    Albizu was responsible for at least 150 kilograms of cocaine for an
    offense level of 38.      See U.S.S.G. § 2D1.1(c) (2002).             Because
    Camacho-Aponte's    testimony     directly    supports   this   finding,   we
    cannot conclude that the district court's choice between two
    plausible views of the record was clearly erroneous.16           See Santos,
    
    357 F.3d at 141
    . Indeed, the district court's explicit recognition
    that it was taking a cautious, "conservative approach" in adopting
    the lower of the two estimates, sufficiently insulates this finding
    from clear error attack.       See United States v. Sklar, 
    920 F.2d 107
    ,
    113-14 (1st Cir. 1990).
    3.   Criminal history
    Based on Mattei-Albizu's two prior offenses, the district
    court assigned him a criminal history category of IV.                 Mattei-
    16
    Again, Mattei-Albizu seeks to impeach the testimony of
    Camacho-Aponte on appeal, arguing that his bad acts and conflict of
    interest made him an incredible and unreliable witness. Again, we
    defer to the credibility assessments made by the sentencing court.
    See United States v. Brewster, 
    1 F.3d 51
    , 55 (1st Cir. 1993). For
    the reasons stated with respect to the firearm enhancement, we
    conclude that the district court's decision to credit Aponte's
    testimony was not clearly erroneous.
    -32-
    Albizu claims that this was error because both prior offenses were
    "relevant conduct" to the instant conspiracy, and therefore neither
    should have been counted in calculating his criminal history
    category.    See   U.S.S.G.   §§    4A1.2,   1B1.3   (2002).   By   his
    calculation, if the district court had properly excluded both prior
    offenses, his criminal history category would have been I, or if
    the district court had counted one offense, but not the other, his
    criminal history category would have been III; in any event, he
    argues that his criminal history category should have been lower
    than the one he received.
    Mattei-Albizu was convicted for possessing narcotics in 1993
    and 1994, and sentenced for both offenses in 1995.       In connection
    with the instant conspiracy prosecution, the government filed an
    informative motion designating the 1993 and 1994 offenses as overt
    acts in furtherance of the conspiracy.          At his plea hearing,
    Mattei-Albizu admitted to being a member of the charged conspiracy
    from 1997 to 2001. Because Mattei-Albizu did not admit to being a
    member of the conspiracy during the time he committed his prior
    offenses, the presentence report recommended a criminal history
    category of IV to take into account the two prior offenses, rather
    than treating them as relevant conduct to the charged conspiracy.
    Before presenting its evidence at sentencing, the government
    informed the district court that it would not dispute Mattei-
    Albizu's stipulation that his participation in the conspiracy began
    -33-
    in 1997.   However, in so doing, it took the position that the 1993
    and 1994 offenses could no longer be considered as overt acts in
    furtherance of the conspiracy, and should therefore be counted
    towards his criminal history category.           Mattei-Albizu disputed the
    government's contention that the prior offenses were outside the
    scope of the conspiracy, citing the government's informative motion
    in which it had specifically designated them as overt acts.                     In
    response, the government conceded that if the case had proceeded to
    trial it would indeed have sought to prove that Mattei-Albizu was
    involved   in   the   conspiracy   as   early     as     1994   and   would   have
    presented the second offense as an overt act in furtherance of the
    conspiracy.     However, the government reminded the court that the
    case was not going to trial because of Mattei-Albizu's guilty plea,
    which included the stipulation that he joined the conspiracy in
    1997.
    In attempting to sort out the parties' arguments, the district
    court explained that the parties had to choose between treating the
    prior offenses as overt acts or for criminal history purposes. The
    district court chose the latter, adopting the recommendation of the
    presentence report and assessing Mattei-Albizu six criminal history
    points for the two prior offenses, as well as an additional two
    points because he committed the instant offense within two years
    after his release from imprisonment on the prior offenses.                    See
    U.S.S.G.   §    4A1.1(e)   (2002).          In   light    of    Mattei-Albizu's
    -34-
    stipulation that he was only a member of the conspiracy from 1997
    onward, we conclude that district court correctly counted the prior
    offenses for criminal history purposes.                    There was no error in
    holding Mattei-Albizu to the facts to which he stipulated.
    III. Booker Claims
    Appellants            Ortiz-Torres,         Cosme-Piri,     Torres-Santiago,
    Renovales-Vélez, and Mattei-Albizu each ask for their cases to be
    remanded to the district court for re-sentencing in accordance with
    United States v. Booker, 
    543 U.S. 220
     (2005).                    Torres-Santiago,
    Ortiz-Torres, Renovales-Vélez, and Cosme-Piri concede that they
    failed to preserve their Booker claims in the district court; thus,
    we review their sentences for plain error.                  See United States v.
    Antonakopoulos, 
    399 F.3d 68
    , 75 (1st Cir. 2005).17                  Mattei-Albizu
    argues that he preserved his Booker claim by objecting to the
    sentencing           court's   drug-quantity     determination.      A    defendant
    preserves Booker error by arguing to the district court that it
    erred        under    either   Apprendi   or     Blakely   or   arguing   that   the
    Guidelines were unconstitutional.                 United States v. McLean, 409
    17
    While conceding that he failed to preserve his Booker claim,
    Torres-Santiago urges us to presume prejudice because the plain
    error standard is "too restrictive." See, e.g., United States v.
    Crosby, 
    397 F.3d 103
     (2d Cir. 2005). A panel of this circuit has
    previously rejected this position, see Antonakopoulos, 
    399 F.3d at 79-80
    , and we are not free to disregard it. See United States v.
    Serrano-Beauvaix, 
    400 F.3d 50
    , 56 (1st Cir. 2005) (Lipez, J.,
    concurring).
    -35-
    F.3d 492, 505 (1st Cir. 2005) (quoting Antonakopoulos, 
    399 F.3d at 76
    ), cert. denied, 
    126 S. Ct. 466
     (2005).   Mattei-Albizu raised no
    such argument before the district court.    Therefore he, like his
    co-conspirators, must proceed under the plain error standard.
    Under that standard, a defendant must show four things: (1)
    that an error occurred, (2) that the error was clear or obvious,
    (3) that it affected substantial rights, and (4) that the error
    seriously impaired the fairness, integrity, or public reputation of
    judicial proceedings.    Antonakopoulos, 399 F.3d at 75 (citing
    United States v. Olano, 
    507 U.S. 725
    , 732-736 (1993)). Because the
    district court treated the guidelines as mandatory at sentencing,
    the first two requirements are satisfied. See, e.g., United States
    v. Kornegay, 
    410 F.3d 89
    , 99 (1st Cir. 2005).18   At issue is whether
    appellants satisfy the third and the fourth.
    The operative question with respect to the third requirement
    is “whether defendant has shown a reasonable probability the
    sentencing judge would, in a non-mandatory Guidelines system, have
    imposed a more lenient sentence.”   United States v. Ayala-Pizarro,
    
    407 F.3d 25
    , 29 (1st Cir.), cert. denied, 
    126 S. Ct. 247
     (2005).
    18
    To the extent Ortiz-Torres, Cosme-Piri and Renovales-Vélez
    argue that the Sixth Amendment entitles them to jury findings on
    the factual predicates of the sentencing enhancements they
    received, by stipulating to the enhancements as part of their
    guilty pleas, they waived the right to a jury determination on
    these issues. United States v. Sahlin, 
    399 F.3d 27
    , 32 (1st Cir.
    2005); United States v. González-Mercado, 
    402 F.3d 294
    , 299 (1st
    Cir. 2005).
    -36-
    We are not overly demanding in our proof; where the record or a
    plausible proffer reasonably indicates that an advisory guideline
    regime might have led the sentencing judge to a different result,
    we will remand for resentencing. United States v. Lewis, 
    406 F.3d 11
    , 21 (1st Cir. 2005) (quoting United States v. Heldeman, 
    402 F.3d 220
    , 224 (1st Cir. 2005)).       However, the mere assertion that the
    district court would have imposed a more favorable sentence is
    insufficient.      McLean, 409 F.3d at 505.         Instead, we require the
    appellant to present "specific facts" to justify a Booker remand.
    Kornegay, 
    410 F.3d at 100
    .
    A.    Torres-Santiago
    Pursuant to a plea agreement, Torres-Santiago stipulated to
    being responsible for between 50 and 150 kilograms of cocaine for
    a base offense level of 36.     See U.S.S.G. § 2D1.1(c)(2) (2002).          He
    further stipulated to a two-level enhancement for possession of a
    firearm in relation to the charged crime, a four-level enhancement
    for his leadership role, and a two-level reduction for acceptance
    of responsibility.      U.S.S.G. §§ 2D1.1(b)(1), 3B1.1(a), 3E1.1(a)
    (2002).    With a criminal history category of I, the applicable
    guidelines range would have been between 292 to 365 months; the
    district   court    sentenced   him    to    336   months'   imprisonment   in
    accordance with the plea agreement.
    Torres-Santiago argues that consideration of the sentencing
    factors of 
    18 U.S.C. § 3553
    (a) would have resulted in a more
    -37-
    lenient sentence under an advisory guideline regime.      However, he
    fails to indicate how any of the listed factors would have created
    a reasonable probability of a more lenient sentence. See Kornegay,
    
    410 F.3d at 100
     (requiring "specific facts" to justify Booker
    remand, not merely recitation of sentencing factors).       Moreover,
    the district court's comments at sentencing suggest that Torres-
    Santiago would be far more likely to receive a harsher sentence,
    not a more lenient one, on remand.19    See United States v. Mercado,
    
    412 F.3d 243
    , 253 (1st Cir. 2005).     Finding no prejudice, we affirm
    the sentence imposed by the district court.
    B.   Cosme-Piri
    Pursuant to a plea agreement with the government, Cosme-Piri
    stipulated that he was responsible for "not less than one hundred
    fifty kilograms of cocaine" and that "such amount should be the
    19
    Before sentencing Torres-Santiago to 336 months' imprisonment
    pursuant to the plea agreement, the district court stated:
    Now, I'm going to respect that [plea] agreement, but
    I want you all to know that I barely accept it . . .
    because this gentleman has a few, and I mean a few
    murders pending in the state court.
    You know very well that we're doing him a favor by
    sentencing him today because I would very well, say,
    let's wait until we see what happens with those murders,
    and when he comes back, if he's ever found in one, he's
    serving life. But that was the agreement and I'm going
    to respect it. But I want him to know that I have the
    option today to postpone until all criminal cases are
    finished in the local court. And if he had any murder or
    any manslaughter this is a lifer, you know that.
    -38-
    proper drug quantity to be considered" for sentencing purposes. He
    also stipulated to a two-level enhancement for possession of a
    firearm and a two-level reduction for acceptance of responsibility.
    U.S.S.G. §§ 2D1.1(b)(1), 3E1.1(a) (2002).           The parties agreed that
    the applicable sentencing range under the guidelines was from 235
    to 293 months' imprisonment; the district court sentenced him to
    252 months as provided in the plea agreement.
    Like Torres-Santiago, Cosme-Piri argues that consideration of
    the § 3553(a) factors would have led to a more lenient sentence
    under an advisory guidelines regime.             However, also like Torres-
    Santiago, Cosme-Piri puts forth no facts that he would offer on
    remand to justify a more lenient sentence, save for those arguments
    already    considered     and   rejected    by    the    district   court    at
    sentencing.      Although the district court was aware that it was not
    required    to    honor   the   252-month        sentencing    recommendation
    stipulated to in the plea agreement, it did so nonetheless, even in
    the face of Cosme-Piri's claim that he was less culpable than his
    co-defendants due to his shorter participation in the conspiracy.
    There is nothing to suggest that the district court would weigh the
    duration   of    Cosme-Piri's   participation       in   the   conspiracy   any
    differently under an advisory guidelines regime.
    C.    Ortiz-Torres
    Pursuant to a plea agreement, Ortiz-Torres stipulated that he
    was responsible for at least 150 kilograms of cocaine.                He also
    -39-
    stipulated to a two-level enhancement for possession of a firearm
    and    a     two-level     reduction    for   acceptance   of    responsibility.
    U.S.S.G. §§ 2D1.1(b)(1), 3E1.1(a) (2002).                  The plea agreement
    provided that the applicable guidelines range was between 235 and
    293 months' imprisonment.               However, Ortiz-Torres's presentence
    report recommended a two-level leadership role enhancement that he
    had not admitted to in the plea agreement, which would have
    resulted in a guidelines sentencing range of 292 to 365 months,
    well    above     the    252-month     sentence   stipulated    to   in    the   plea
    agreement.
    At sentencing, this discrepancy was brought to the attention
    of the district court. In order to accommodate the leadership role
    enhancement        while     still     honoring    the   252-month        sentencing
    recommendation, the court recommended that the parties amend the
    plea agreement by reducing the drug quantity from 150 kilograms to
    between 50 and 150 kilograms of cocaine.20 The parties followed the
    district court's recommendation and amended the plea agreement
    accordingly.         Accepting the amended plea, the district court
    sentenced Ortiz-Torres to the 252 months to which the parties had
    agreed.
    20
    Specifically, the court stated:
    This is what he agreed to, so why don't we briefly amend
    the plea, decrease the drugs, we remain with the amount
    [of] leadership that was found and it is a just solution
    to all. I am willing to approve it in that fashion.
    -40-
    Ortiz-Torres points to nothing in the record suggesting a
    reasonable probability that he would fare any better under an
    advisory guidelines regime.            Indeed, he would be hard-pressed to
    make such a showing in light of the district court's stated desire
    to honor the agreed to 252-month sentence, even in the face of a
    contrary,    and    significantly        higher,     recommendation         in    the
    presentence investigation report.            The district court's statements
    that it was "going out of [its] way" to honor the 252-month
    recommendation suggests a reasonable probability that Ortiz-Torres
    would receive an identical sentence on remand.                    Because Ortiz-
    Torres shows nothing to the contrary, he fails to establish that he
    was   prejudiced    by   the    sentencing      court's    enforcement      of    his
    bargain.
    D.    Renovales-Vélez
    In his plea agreement, Renovales-Vélez admitted responsibility
    for at least 150 kilograms of cocaine for a base offense level of
    38.   U.S.S.G. § 2D1.1(c)(1).          He further stipulated to a two-level
    enhancement for possession of a firearm and a two-level reduction
    for   acceptance    of   responsibility.           U.S.S.G.     §§    2D1.1(b)(1),
    3E1.1(a) (2002).     Assuming a criminal history category of I, which
    the   presentence    report     ultimately      recommended,     the    applicable
    guidelines   sentencing        range   was     between    235   and   293   months'
    imprisonment.      The government agreed to a sentence of 252 months'
    imprisonment.         Recognizing        that     Renovales-Vélez       had      been
    -41-
    incarcerated during a significant portion of the conspiracy, the
    district     court   found   him    to     be    less   culpable    than   his     co-
    defendants,     and,    notwithstanding          the    government's    objection,
    sentenced him to 238 months' imprisonment—fourteen months less than
    the 252-month term the parties had stipulated to in the plea
    agreement and three months above the bottom of the applicable
    guidelines range.
    To establish a reasonable probability of a more lenient
    sentence on remand, Renovales-Vélez relies solely on the fact that
    his sentence was fourteen months lower than the sentence the
    government agreed to in the plea agreement.                     Although he argues
    that this is evidence the district court would go even lower under
    an advisory guidelines regime, it could just as easily indicate
    that   the   district   court      would    exercise      its    discretion   in    an
    identical manner on remand.         See Sahlin, 
    399 F.3d at 33
     (finding no
    possible claim of prejudice where defendant receives sentence lower
    than that stipulated to in a plea agreement).                      Renovales-Vélez
    points to no additional facts he would present to the district
    court to convince it that it should go lower than the plea
    agreement than it already did.                  See McLean, 409 F.3d at 505.
    Moreover, the fact that the sentence he received was near the
    bottom of the applicable guidelines range is insufficient, standing
    alone, to establish prejudice.                  Kornegay, 
    410 F.3d at 99-100
    .
    Under these circumstances, Renovales-Vélez fails to show he was
    -42-
    prejudiced by the court's mandatory application of the sentencing
    guidelines.
    E.   Mattei Albizu
    Mattei-Albizu entered a straight plea of guilty to conspiring
    to sell five kilograms or more of cocaine, as alleged in the
    indictment, which carried a statutory minimum sentence of ten years
    and a maximum of life imprisonment.            See 
    21 U.S.C. § 841
    (b)(1).     At
    the change of plea hearing the government stated that if the case
    had gone to trial it would have proven beyond a reasonable doubt
    that Mattei-Albizu conspired to distribute in excess of five
    kilograms of cocaine and that he possessed a firearm in relation to
    the drug trafficking offense charged.
    Following an evidentiary hearing on the drug-quantity and
    firearm-possession sentencing factors, the district court imposed
    a two-level enhancement for possession of a dangerous weapon during
    the   commission   of       a    drug   trafficking     offense.   U.S.S.G.    §
    2D1.1(b)(1) (2002).         The court further determined that Mattei-
    Albizu was responsible for in excess of 150 kilograms of cocaine
    for a base offense level of 38, U.S.S.G. §§ 2D1.1(b)(1) (2002),
    and   granted   him     a       two-level   reduction    for   acceptance     of
    responsibility,       U.S.S.G. § 3E1.1(a) (2002).           Based on a total
    offense level of 38 and a criminal history category of IV, the
    applicable guideline imprisonment range was 324 to 405 months. The
    district court sentenced Mattei-Albizu to 324 months' imprisonment.
    -43-
    Mattei-Albizu contends that the disparity between his 324-
    month sentence and the 108-month sentence received by one of his
    coconspirators, Jorge Lagase,21 requires a remand so that he may be
    resentenced in accordance with his "real conduct." As the district
    court recognized, Lagase and Mattei-Albizu were not similarly
    situated; thus, there is no reason for their sentences to be
    similar.   Lagase entered into a plea agreement much earlier in the
    prosecution of the present conspiracy and, unlike Mattei-Albizu,
    did not request an evidentiary hearing to contest all the facts
    underlying the applicable sentencing factors.        Stripped of its
    sentencing   disparity   patina,   Mattei-Albizu's   Booker   claim   is
    nothing more than a challenge to the district court's drug-quantity
    determination, a challenge which we have already rejected. Because
    he fails to show prejudice as a result of the district court's
    mandatory application of the sentencing guidelines, we reject his
    Booker claim as well.
    21
    Despite admitting to a supervisory role in the La Plena drug
    trafficking organization, Lagase was held accountable for a lesser
    quantity of cocaine:    between 3.5 and 5 kilograms compared to
    Mattei-Albizu's in excess of 150 kilograms. In addition, unlike
    Mattei-Albizu, Lagase did not receive a two-level enhancement for
    possession of a dangerous weapon. Accordingly, Lagase received a
    significantly lower sentence than did Mattei-Albizu: 108 months'
    imprisonment as compared to 324 months.
    -44-
    IV.   Conclusion
    The convictions and sentences imposed by the district court
    are affirmed.
    -45-