United States v. Matos ( 1993 )


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  • USCA1 Opinion









    March 11, 1993
    UNITED STATES COURT OF APPEALS
    FOR THE FIRST CIRCUIT
    ____________________

    No. 91-1286

    UNITED STATES,

    Appellee,

    v.

    VICTOR MANUEL ALVAREZ,

    Defendant, Appellant.

    ____________________

    No. 91-1287

    UNITED STATES,

    Appellee,

    v.

    DIANA MATOS,

    Defendant, Appellant.

    ____________________

    APPEALS FROM THE UNITED STATES DISTRICT COURT

    FOR THE DISTRICT OF PUERTO RICO


    [Hon. Carmen C. Cerezo, U.S. District Judge]
    ___________________

    ____________________

    Before

    Torruella, Circuit Judge,
    _____________
    Campbell, Senior Circuit Judge,
    ____________________
    and Skinner,* Senior District Judge.
    _____________________

    ____________________




















    Rachel Brill, Assistant Federal Public Defender, with whom
    _____________
    Benicio Sanchez Rivera, Federal Public Defender, was on brief for
    _______________________
    appellant Victor Manuel Alvarez.
    Joseph C. Laws, Jr., by Appointment of the Court, for appellant
    ____________________
    Diana Matos.
    Ivan Dominguez, Assistant United States Attorney, with whom
    _______________
    Daniel F. Lopez Romo, United States Attorney, and Jose A. Quiles-
    ______________________ ________________
    Espinosa, Senior Litigation Counsel, were on brief for appellee United
    ________
    States.


    ____________________

    March 11, 1993
    ____________________

    _____________________

    *Of the District of Massachusetts, sitting by designation.



















































    SKINNER, District Judge.
    ______________

    Appellants Victor M. Alvarez and Diana Matos, common

    law husband and wife, were convicted by a jury in the

    District of Puerto Rico for aiding and abetting several drug

    offenses.1 Miguel Flores, though not a party to this

    appeal nor convicted in the same trial, played a central

    role in the alleged cocaine trafficking scheme and pleaded

    guilty to the identical charges. Appellants defended

    against the charges alleging that they were unwitting

    participants in defendant Flores' cocaine trafficking

    scheme. Flores offered testimony to the same end. Each

    appellant advances numerous grounds for reversal.

    Appellant Alvarez appeals his convictions alleging

    that the district court (1) erroneously refused to accept

    defendant Flores' guilty plea prior to the trial of Alvarez

    and Matos, (2) improperly prohibited Flores from testifying

    that his testimony exposed him to criminal penalties for

    cocaine trafficking, and (3) errored in denying appellant's

    ____________________

    1 Alvarez and Matos were convicted for the possession of
    cocaine with intent to distribute in violation of 18 U.S.C.
    2 and 21 U.S.C. 841(a)(1); the importation of cocaine
    into the customs territory of the United States in violation
    of 18 U.S.C. 2 and 21 U.S.C. 952(a); and the failure to
    declare cocaine in the cargo manifest or supply list of the
    aircraft which brought them into the customs territory of
    the United States in violation of 18 U.S.C. 2 and 21
    U.S.C. 955.

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    motion for judgment of acquittal. We affirm with respect to

    Alvarez.

    Appellant Matos joins the arguments of Alvarez and

    further appeals her convictions, alleging that the district

    court failed to exclude government evidence that was

    produced in violation of Rule 16, Federal Rules of Criminal

    Procedure. As to Matos, we reverse and remand to the

    district court for a new trial.



    I. Evidence
    __ ________

    We recite the evidence in the light most favorable

    to the prosecution. United States v. Campbell, 874 F.2d
    __________________________

    838, 839 (1st Cir. 1989). The evidence showed that on

    December 8, 1989, Victor M. Alvarez, Diana Matos, and Miguel

    A. Flores arrived at the Luis Munoz Marin International

    Airport, San Juan, Puerto Rico, on American Airlines flight

    904 from Caracas, Venezuela. A U.S. Customs Inspector,

    Francis Aponte, noticed that the three individuals appeared

    to be nervous and were talking secretively among themselves.

    Inspector Aponte approached the individuals, made routine

    inquiries of them, and referred the group to the secondary

    inspection station (a table used to examine the contents of

    a passenger's luggage). At that time, appellant Alvarez was


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    permitted to leave the customs enclosure to purchase

    airplane tickets to New York for each member of the group.

    Inspector Aponte testified on cross-examination that he had

    not made any written record of the group's suspicious

    behavior even though such information would have been an

    important part of the case report.

    Carlos Ortiz, also a U.S. Customs Inspector,

    testified that he noticed two individuals, later identified

    as Flores and Matos, pushing two carts stacked with luggage

    and that he motioned for them to approach his secondary

    station. Inspector Ortiz requested Matos' and Flores'

    customs declaration cards, noting that both cards appeared

    to have been filled out by the same person. Matos

    complained that the airline had broken a bottle of liquor

    that she packed in her suitcase. During his search of the

    luggage, Ortiz noticed that the luggage contained both men's

    and women's clothing and he discovered a heavy, newspaper

    wrapped package. Ortiz unwrapped the package to find an

    aged painting of a young girl in a wooden frame. Ortiz

    asked Matos if she had purchased the picture on her trip, to

    which she answered "yes."

    Inspector Ortiz consulted with a senior inspector,

    took the picture to a search room, and drilled into the


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    picture frame using a small drill bit. Ortiz discovered a

    white powdery substance inside the wooden frame, which a

    field test indicated was cocaine. Matos and Flores were

    arrested and searched. Customs inspectors then located

    Alvarez in the airport's main concourse and placed him under

    arrest. Inspectors conducted a thorough search of the

    group's luggage, finding two additional paintings that

    concealed cocaine and discovering false bottoms in each of

    the six suitcases that also concealed cocaine. Customs

    agents determined that the group carried more than ten

    kilograms of cocaine.

    A grand jury returned a three count indictment on

    January 3, 1990, against Matos, Alvarez, and Flores. Each

    defendant pleaded not guilty. On October 2, 1990, Flores

    filed a notice to plead guilty on one count of the

    indictment. It appears, however, that Flores intended to

    plead guilty on all three counts, and on October 5, 1990, he

    amended his petition accordingly. On October 5, 1990, the

    district court extensively questioned Flores before

    declining to accept his plea. Flores asserted that Alvarez

    and Matos had been unaware of any plan to import cocaine and

    that he, himself, was solely responsible for the crime. The

    judge suspended the proceeding because she was unsure


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    whether Flores could plead guilty to aiding and abetting a

    crime while simultaneously proclaiming the innocence of the

    other alleged participants.

    On October 9, 1990, the Flores plea hearing resumed.

    The judge explained that Flores' refusal to acknowledge the

    aiding and abetting modality did not preclude his guilty

    plea. The court then engaged in an extensive colloquy with

    defendant Flores in accordance with Rule 11 of the Fed. R.

    Crim. P. The judge noted that Flores had proclaimed the

    innocence of Alvarez and Matos in a confidential letter that

    Flores had written to the judge from prison. Flores

    confirmed sending the letter and explained that appellants

    were friends of his from New York, the home of all the

    parties. Flores had invited appellants to join him on a

    cruise from San Juan to several caribbean islands, including

    a stop in Caracas, Venezuela. While on the cruise, Flores

    met a man who offered him three thousand dollars to bring

    several pictures from Venezuela to Puerto Rico. Flores

    agreed to meet the man at a hotel in Caracas and to carry

    the pictures into Puerto Rico as a passenger on a commercial

    airline. Flores did not tell Alvarez or Matos of his

    scheme.




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    Flores, Alvarez, and Matos left the ship while it

    was in port in Caracas to visit the beach. Flores claimed

    to have tricked the appellants into missing the ship's

    scheduled departure because he did not want to fly to Puerto

    Rico alone. After missing the ship, Flores took Alvarez and

    Matos to the predesignated hotel, checked the group into two

    rooms, secretly picked up the pictures, and borrowed several

    pieces of luggage from the man after explaining that the

    group had left their bags on the cruise ship. Flores

    arranged to meet the man in Puerto Rico at which time Flores

    would deliver the pictures and return the borrowed luggage.

    Flores claimed that he never saw the cocaine or even knew

    for certain that he was carrying cocaine,2 but "imagined"

    that the frames concealed cocaine because "nobody is going

    to pay you three thousand dollars just to bring in three

    pictures." Flores also denied knowing that the borrowed

    suitcases concealed cocaine. Flores explained that Alvarez,

    Matos, and he purchased new cloths in Caracas and spent

    several days in the hotel before returning to Puerto Rico.

    Flores packed the three pictures in separate bags and


    ____________________

    2 Flores explained to the judge, "At no time did [the man]
    tell me it was cocaine. He told me, `I want you to take
    these pictures for me. Take them there.' He says, `it
    doesn't contain anything dangerous.'"

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    covered them with cloths. Flores maintained that appellants

    were totally unaware of his trafficking scheme during the

    entire trip.

    The district court declined Flores' plea, stating:

    Now, you have stated that you did not know what was
    in the picture frames, you did not know what was in
    any of the luggage that you carried. That in itself
    carries with it a defense that you could present to
    the jury. So I am not convinced that you have made
    a plea of guilty that I could accept that has a
    basis in fact that contains all elements of the
    offenses charged which is a requirement for the
    court to accept your plea of guilty. Among those
    elements, those of knowledge and intent.

    Flores then moved to sever his trial from that of the

    appellants. Finding that it would be impossible to mount an

    adequate defense if Flores testified in favor of Alvarez and

    Matos, the district court granted both the motion to sever

    Flores' trial and Flores' request to be tried after

    appellants.

    At trial, Matos called Flores as a witness who

    offered essentially the same testimony as given to the judge

    during his attempted plea. During examination by Alvarez,

    Flores was permitted to testify that it was a crime to bring

    cocaine into the United States, but he was not permitted to

    testify as to the punishment that could be imposed for his

    crime or as to his aborted plea attempt. The jury found

    Matos and Alvarez guilty on all charges.

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    One week later, Flores again came before the

    district court to offer his guilty plea, but this time he

    admitted that he knew cocaine was concealed within the

    picture frames. The court accepted his plea.





    II. Alvarez's Conviction
    ___ ____________________

    Appellant Alvarez attacks his conviction on three

    fronts. First, Alvarez alleges that his defense was

    prejudiced because the district court erroneously failed to

    accept defendant Flores' guilty plea prior to the trial of

    Alvarez and Matos. Alvarez claims the judge relied on

    "perceived technical deficiencies" with Flores' plea, rather

    than crediting the weight of Flores' testimony that

    indicated he accepted full responsibility for the crime.

    This error, Alvarez argues, prejudiced his defense because

    he was deprived of the opportunity to put Flores' guilty

    plea before the jury as persuasive evidence of Mr. Flores'

    credibility and sincerity.

    We are unpersuaded by appellant's argument. A

    criminal defendant has no constitutional right to plead

    guilty. North Carolina v. Alford, 400 U.S. 25, 38 n.11
    __________________________

    (1970) (a trial judge need not "accept every


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    constitutionally valid guilty plea merely because a

    defendant wishes so to plead"). Nor does Rule 11 of the

    Federal Rules of Criminal Procedure create such a right.

    United States v. Bednarski, 445 F.2d 364, 365-66 (1st Cir.
    ___________________________

    1971). Here, the district court conducted a prolonged

    hearing to determine the sufficiency of Flores' plea and

    carefully considered his testimony. While Alvarez might

    reach a different conclusion than the judge as to the

    factual sufficiency of Flores' attempted plea, we find no

    error in district court's determination.

    Second, Alvarez alleges that the district court

    violated both the Compulsory Process and the Confrontation

    Clauses of the Sixth Amendment by improperly limiting the

    scope of Flores' testimony and, thereby, depriving the

    defendants of forceful evidence of Flores' sincerity and

    credibility. On direct examination, Matos asked Flores,

    "You have testified under oath regarding the exceptance

    [sic] of a criminal offense. Are you aware of the

    punishment that could be imposed for this crime?"

    The district court sustained the government's

    objection to the question, reasoning that Flores had not

    actually pleaded guilty and that he might or might not be

    found guilty at a later trial. Moreover, Flores' testimony


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    would not necessarily be admissible against him in his own

    trial unless he chose to testify in his own defense. The

    judge did, however, allow Matos to ask Flores if he had

    previously asserted the appellants' innocence.

    Alvarez then conducted what he termed a "cross-

    examination" of Flores -- a characterization rejected by the

    trial court. The government argued that even though Flores

    was not a joint witness of the appellants, cross-examination

    was unavailable because Flores was clearly testifying in

    Alvarez's favor. Though we are inclined to agree with the

    trial court, we need not decide the issue because Alvarez's

    Sixth Amendment objection fails regardless of how the

    examination is characterized. Flores was permitted to

    testify on "cross-examination" that he knew it was a crime

    to bring cocaine into the United States and that he had

    "wanted to talk about [his story] for some time."

    The Confrontation Clause of the Sixth Amendment

    provides that "[i]n all criminal prosecutions, the accused

    shall enjoy the right . . . to be confronted with the

    witnesses against him." Cross-examination, the primary

    interest secured by the Confrontation Clause, is "the

    principal means by which the believability of a witness and

    the truth of his testimony are tested." Kentucky v.
    ____________


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    Stincer, 482 U.S. 730, 736 (1987) (quoting Davis v. Alaska,
    _______ _______________

    415 U.S. 308, 316 (1974)). The Confrontation Clause

    "mandates a `minimum threshold of inquiry' be afforded a

    defendant in the cross-examination of adverse witnesses,"

    Brown v. Powell, 975 F.2d 1, 5 (1st Cir. 1992) (quoting
    ________________

    United States v. Jarabek, 726 F.2d 889, 902 (1st Cir.
    __________________________

    1984)), cert. dismissed, 122 L. Ed. 2d 179 (1993), but the
    _______________

    right to cross-examination is, of course, not absolute.

    Trial judges retain broad discretion to impose reasonable

    limits on the scope of cross-examination. Delaware v. Van
    ________________

    Arsdall, 475 U.S. 673, 679 (1986). On appeal, we review to
    _______

    determine:

    whether the jury had sufficient other information
    before it, without the excluded evidence, to make a
    discriminating appraisal of the possible biases and
    motivations of the witnesses.

    Brown, 975 F.2d at 5 (quoting United States v. Tracey, 675
    _____ ________________________

    F.2d 433, 437 (1st Cir. 1982)). The issue here is whether

    the district court abused its discretion and committed a

    reversible error when it prevented the jury from learning of

    the exact penalties that Flores would face if convicted of

    cocaine trafficking. We conclude the court committed no

    error.

    Flores was allowed to put his entire story before

    the jury, including important information that supported his

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    credibility. The jury heard Flores testify that importing

    cocaine into the U.S. is a crime. We are confident that the

    jury knew that a conviction for importing a large quantity

    of cocaine carries a serious punishment. Though the jury

    did not learn of the precise penalty imposed for drug

    trafficking or that Flores had attempted to plead guilty,

    the decision to exclude this evidence was within the

    district court's discretion. The judge could properly

    conclude that such testimony might mislead or confuse the

    jury; particularly where, as here, the witness sought to

    testify to the same penalties faced by the defendants.

    We note that Sixth Amendment right of cross-

    examination is directed at uncovering witness bias and

    untruthfulness. In this case, however, Alvarez sought to

    use "cross-examination" to bolster the witness' credibility.

    Contrary to appellant's assertion, exposing a witness' bias

    to lie can, indeed, be more important than exploring a

    witness' motivation for telling the truth. Cf. Fed. R.
    ___

    Evid. 608 (evidence of truthful character is admissible only

    after the character of the witness for truthfulness has been

    attacked); Fed. R. Evid 801 (prior consistent statements

    generally admissible only to rebut an express or implied




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    charge of recent fabrication or improper influence or

    motivation).

    Alvarez also asserts that the district court

    violated the Compulsory Process Clause of the Sixth

    Amendment. According to Alvarez, the district court

    interfered with his constitutional right to present

    witnesses in his own defense when it excluded an important

    portion of Flores' testimony that weighed in favor of

    Flores' credibility. The Compulsory Process Clause

    guarantees every criminal defendant "the right . . . to have

    compulsory process for obtaining witnesses in his favor . .

    ." This fundamental right, however, is not absolute.

    Campbell, 874 F.2d at 851; Chappee v. Vose, 843 F.2d 25, 28
    ________ _______________

    (1st Cir. 1988). The Supreme Court has explained, "The

    Sixth Amendment does not confer the right to present

    testimony free from the legitimate demands of the

    adversarial system . . ." United States v. Nobles, 422 U.S.
    _______________________

    225, 241 (1975). As explained more fully above, we conclude

    that the district court acted properly to limit Flores'

    testimony which might have mislead or confused the jury.

    Third, Alvarez complains that the district court

    errored in denying his Rule 29 motion for judgment of




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    acquittal.3 Alvarez contends that the evidence was

    insufficient to prove beyond a reasonable doubt that he was

    an active participant in the scheme to import cocaine. We

    review the evidence to determine whether the evidence as a

    whole, taken in the light most favorable to the prosecution,

    together with all reasonable inferences favorable to it,

    would allow a rational fact finder to conclude beyond a

    reasonable doubt that the defendant was guilty as charged.

    United States v. Maraj, 947 F.2d 520, 522-23 (1st Cir.
    ________________________

    1991); United States v. Vargas, 945 F.2d 426, 427-28 (1st
    ________________________

    Cir. 1991). A conviction may be grounded in whole or in

    part on circumstantial evidence. Maraj, 947 F.2d at 523.
    _____

    Moreover, because the jury is entrusted with the

    responsibility for making credibility determinations and is

    empowered to accept or reject, in whole or in part, a

    witness' testimony, we will not weigh witness credibility on

    appeal. Maraj, 947 F.2d at 523; Vargas, 945 F.2d at 427.
    _____ ______

    ____________________

    3 Rule 29 provides in relevant part,

    The court on motion of a defendant or of its own
    motion shall order the entry of judgment of
    acquittal of one or more offenses charged in the
    indictment or information after the evidence on
    either side is closed if the evidence is
    insufficient to sustain a conviction of such offense
    or offenses.

    Fed. R. Crim. Proc. 29.

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    Guilt for aiding and abetting attaches only where

    "the defendant associated himself with the venture,

    participated in it as in something he wished to bring about,

    and sought by his actions to make it succeed." United
    ______

    States v. Rodriguez Cortes, 949 F.2d 532, 539 (1st Cir.
    ____________________________

    1991). Neither mere association with the principal nor mere

    presence at the scene of a crime, even when combined with

    knowledge that a crime was to be committed, is sufficient to

    establish aiding and abetting liability. United States v.
    ________________

    Aponte-Suarez, 905 F.2d 483, 491 (1st Cir.) (quoting United
    _____________ ______

    States v. Francomano, 554 F.2d 483, 486 (1st Cir. 1977)),
    _____________________

    cert. denied, 111 S. Ct. 531 (1990). Guided by these
    ____________

    standards of review, we are persuaded that Alvarez's

    conviction is supported by sufficient evidence of guilt.

    There is no dispute that Alvarez was traveling for an

    extended period of time with Matos and Flores and that a

    very large quantity of cocaine was concealed in the luggage

    carried by the group. Moreover, there is sufficient

    evidence upon which a reasonable jury could conclude beyond

    a reasonable doubt that Alvarez participated in or sought to

    assist Flores' scheme to import cocaine into the U.S.

    The evidence established that a Customs Inspector

    noticed the group talking "secretively" at the airport; that


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    two of the bags that concealed cocaine carried name tags

    bearing Alvarez's name; and that Alvarez and his common law

    wife had no means of support other than welfare, food

    stamps, and odd jobs and, yet, they could still afford to

    fly to Puerto Rico, travel on a cruise ship, stay in a

    Venezuelan hotel for several days, and purchase new cloths

    to replace those purportedly left on the cruise ship. In

    addition, the government was able to highlight certain

    inconsistencies in the testimony offered by Flores and

    Matos.4 Most significantly, the government produced a

    photograph apparently taken on the cruise ship that showed

    Matos wearing a striped dress that according to her story

    was not purchased until after she disembarked from the ship
    _____

    in Caracas. Matos explained that she was apparently

    mistaken about the items of clothing she carried with her

    when she left the ship. The government also introduced

    evidence that the cruise ship operators searched the cabins

    used by Matos, Alvarez, and Flores and did not find the

    luggage purportedly left behind by the appellants. The

    witness, however, did not conduct the search himself and had

    no knowledge of how the search was conducted.



    ____________________

    4 Alvarez did not testify at trial.

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    Though the evidence against Alvarez is not

    overwhelming, when it is viewed in a light most favorable to

    the prosecution it is sufficient to support the verdict.

    We, therefore, affirm Alvarez's conviction.



    III. Matos' Conviction
    ____ _________________

    In addition to joining in the arguments advanced by

    Alvarez, Matos contends that her conviction must be reversed

    because the government presented in its case-in-chief an

    oral statement allegedly made by Matos which the government

    failed to disclose during pre-trial discovery as required by

    Fed. R. Crim. P. Rule 16. Specifically, Matos challenges a

    portion of the testimony given by Officer Ortiz, a U.S.

    Customs Inspector who searched Matos' luggage. Officer

    Ortiz testified that during the search he asked Matos if

    she had purchased the picture on her trip, to which she

    answered "yes." Ortiz's testimony was the only direct

    evidence that the incriminating picture belonged to Matos.

    The substance of Officer Ortiz's testimony came as a

    surprise to Matos because she had made two prior requests of

    the government -- first by letter on January 11, 1990 and

    second by formal motion on January 22, 1990 -- to comply

    with the discovery provisions of Rule 16, including a


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    specific request for any "oral statement[s of the defendant]

    which the Government intends to offer in evidence at the

    trial." The government responded by expressly acknowledging

    its obligations under Rule 16 and by producing several

    documents. The government, however, made no mention of

    Matos' alleged statement at that time or at any time before

    the damaging testimony came before the jury. During cross-

    examination, Officer Ortiz admitted that his prior testimony

    at a preliminary hearing and before a grand jury did not

    include any reference to Matos' alleged statement concerning

    the picture.

    The following morning, Matos moved to strike Officer

    Ortiz's testimony and for the court to admonish the jury to

    disregard the testimony. Matos argued that prosecution

    records showed that Officer Ortiz had told the government of

    Matos' alleged statement in April 1990, but that the

    government failed to produce the statement despite repeated

    requests by Matos. The judge denied the motion without

    giving an explanation.

    Rule 16 imposes an obligation on both the criminal

    defendant and the government to produce or disclose to the

    opposing party certain relevant evidence prior to trial.




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    The provisions of Rule 16(a)(1)(A) in effect at the time of

    trial provided, in relevant part:

    Upon request of a defendant the government
    shall permit the defendant to inspect and
    copy . . . the substance of any oral
    statement which the government intends to
    offer in evidence at the trial made by the
    defendant whether before or after arrest in
    response to interrogation by any person then
    known by the defendant to be a government
    agent.

    Fed. R. Crim. P. 16(a)(1)(A). These mandatory discovery

    provisions are intended to contribute to the fair and

    efficient administration of criminal justice by providing

    the defendant with sufficient information upon which to base

    an intelligent a plea; by minimizing the undesirable effect

    of surprise at trial; and by contributing to the accuracy of

    the fact finding process. Fed. R. Crim. P. 16, advisory
    ________

    committee's note. Where a party fails to comply with these
    _________________

    discovery provisions, Rule 16 empowers the district court to

    order the party to comply with the rule, grant a

    continuance, exclude the non-complying evidence, or enter

    other such relief as it considers just. Fed. R. Crim. P.

    16(d)(2). We review a district court's ruling on the effect

    of a failure to provide pretrial discovery only for abuse of

    discretion. United States v. Nickens, 955 F.2d 112, 126
    _________________________

    (1st Cir.), cert. denied, 113 S. Ct. 108 (1992); Rodriguez
    _____________ _________


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    Cortes, 949 F.2d at 546; see Fed. R. Crim. P. 16(d)(2). To
    ______ ___

    succeed in obtaining a reversal on appeal, a defendant must

    prove both an abuse of discretion and prejudice. Nickens,
    _______

    955 F.2d at 126; Rodriguez Cortes, 949 F.2d at 546. We
    _________________

    reverse.

    We believe the trial court erred when it denied

    Matos' motion to exclude the alleged statement or to hold a

    suppression hearing without first making a finding as to

    whether the government acted in bad faith and whether Matos

    was prejudiced by admission of the statement. We generally

    defer to the judgment of a district judge who is better

    suited to make factual determinations based on first hand

    observation of the evidence. In this case, however, the

    judge failed to make even a threshold inquiry into the

    circumstances leading to nondisclosure of the statement.

    The court neither heard evidence nor made factual findings

    concerning the potential prejudice flowing from a discovery

    violation, the relative importance of Ortiz's testimony, and

    the existence of prosecutorial bad faith. See Nickens, 955
    ___ _______

    F.2d at 126. This was error.

    Moreover, this error prejudiced appellant Matos.

    The alleged Matos statement provided a critical link between

    Matos and the effort to smuggle the cocaine laden picture


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    frame into Puerto Rico. To establish guilt for aiding and

    abetting, "the government must prove that the defendant

    associated himself with the venture, participated in it as

    in something he wished to bring about, and sought by his

    actions to make it succeed." Rodriguez Cortes, 949 F.2d at
    ________________

    539 (quoting United States v. Garcia-Rosa, 876 F.2d 209, 217
    ____________________________

    (1st Cir. 1989), cert. denied, 493 U.S. 1030 (1990)). The
    _____________

    statement attributed to Matos was a very significant piece

    of evidence that indicated Matos was a participant in the

    crime, rather than merely being an innocent bystander

    present at the scene of a crime. Similarly, the alleged

    statement fundamentally sabotaged Matos' defense that she

    was an unwitting participant in Flores' cocaine trafficking

    venture. There is a substantial likelihood that the

    statement figured prominently in the jury's decision to

    reject Flores' account of the incident, which wholly

    exculpated appellants.

    Given the central importance of the alleged

    statement, the government's failure to disclose it as

    required by Rule 16 had additional grave consequences for

    Matos. First, Matos was deprived of any meaningful

    opportunity to investigate the circumstances of her alleged

    statement and to attempt to suppress it. Significantly, the


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    government disclosed during pretrial discovery a statement

    made by Alvarez, which Alvarez successfully suppressed.

    Second, not knowing of the alleged statement, Matos was

    deprived of the opportunity to design an intelligent

    litigation or plea strategy that responded to the alleged

    statement.

    The government contends that no prejudice attached

    because "it is doubtful that counsel for appellant would not

    anticipate or contemplate that such a statement might

    exist." Even if this argument were not inconsistent with

    the mandatory language of Rule 16, we would flatly reject it

    as being incompatible with common sense and fundamental

    fairness. The government also contends that the cross-

    examination of Officer Ortiz effectively impeached his

    testimony and essentially cured whatever prejudice might

    have existed. While we have sometimes considered effective

    cross-examination of witness when weighing potential

    prejudice presented by that witness' testimony, Nickens, 955
    _______

    F.2d at 126; United States v. Samalot Perez, 767 F.2d 1, 4
    _______________________________

    (1st Cir. 1985), those cases involved the admission of

    cumulative evidence that was regarded as harmless error. In

    this case, the alleged statement was vital to the

    conviction.


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    Finally, the government argues that since Matos did

    not present the trial judge with any specific grounds for

    suppressing the alleged statement, the district court

    correctly denied Matos' request for a suppression hearing.

    During a discussion with Matos' counsel, the judge

    repeatedly asked if the defendant had any grounds to

    suppress the statement. Counsel responded that he learned

    of the statement only the day before, that he had no

    information regarding the statement, and when pressed by the

    judge, stated that at that time he had no grounds to
    _____________

    suppress the statement other than the violation of Rule 16.

    We are not surprised that Matos was unprepared to articulate

    a particular ground for suppressing the statement under

    these circumstances and in the middle of a trial. The one

    possible curative course, suspending the trial and holding a

    suppresion hearing, was erroneously rejected by the district

    court.

    The government is wholly responsible for unfairly

    surprising the defendant and should not benefit from its own

    violation of Rule 16.

    In summary, we affirm the conviction of Alvarez and

    reverse and remand for a new trial as to Matos.




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