This appeal raises questions about the definition of the “enterprise” element of criminal charges under the Racketeer Influenced and Corrupt Organizations Act, 18 U.S.C. § 1961 et seq. (“RICO”), and the admissibility of evidence concerning the adequacy of police investigations and of investigation tips received by police officers as to who committed a crime.
Samuel Patrick and Jason Arthur were each convicted on over six counts of a criminal RICO indictment arising out of their membership in the Intervale Posse (IVP), a gang that distributed crack cocaine from 1990 to 1996 in the Dorchester neighborhood of Boston. Arthur was also convicted of the 1992 murder of a rival drug dealer. One of their defenses was that the IVP was simply a loose connection of individual, young drug entrepreneurs, one competing with another. RICO, they say, was meant to counter organized crime, and there was nothing particularly “organized” about the crimes committed by the IVP. They argue that their convictions should be reversed because the judge improperly instructed the jury, because the evidence did not support a RICO conviction, and for other reasons.
*16 I.
Jason Arthur and Samuel Patrick were each charged in 1997 with racketeering under 18 U.S.C. § 1962(c), conspiracy to commit that offense under 18 U.S.C. § 1962(d), and conspiracy to distribute crack cocaine under 21 U.S.C. § 846. Arthur was charged with two counts and Patrick with three counts of possession of crack with intent to distribute under 21 U.S.C. § 841(a)(1). 1 In addition, Arthur was charged with murder in aid of racketeering under 18 U.S.C. § 1959. Both were convicted and sentenced to life imprisonment.
II.
We describe the evidence as the jury could reasonably have found it. During the 1990s, members of the IVP sold crack cocaine in the Intervale neighborhood of Dorchester, an area of Boston. The IVP was the successor to an earlier gang, known as “Adidas Park.” The gang gave a new spin to the concept of brand identification. IVP members wore Adidas clothing, identified themselves and referred to the gang by signifying the Adidas brand logo (a sign of three fingers signifying the three stripes on Adidas products), and, in a few instances, owned mirrors painted with their nicknames and the IVP logo. Members referred to one another as family. Younger members, often teenagers, “pumped” 2 (or sold) drugs for the older members, although some younger members also operated on their own.
Patrick held the supplier’s role within the IVP. He decided who could sell on IVP territory, set the prices for the IVP’s crack, and directed sales by younger members. Patrick also determined when the gang would eliminate rivals. Arthur supplied crack to the IVP and also bought crack from Patrick. In addition, Arthur helped keep order in the IVP, reprimanding younger members for risky behavior that attracted police attention.
As part of the IVP’s operating procedures, IVP members would page suppliers like Patrick and Arthur to deliver drugs to a customer’s house. At the house, the crack was “cut” and “bagged” in smaller amounts for resale on the street, and the customer was paid in crack or money for use of the house. Although IVP members competed with one another for individual customers, they all profited from increased sales overall in the neighborhood. Only IVP members could sell on the IVP’s “turf,” and the gang used actual and threatened violence to deter rivals. Members held “sessions” (or meetings) where they discussed rival drug operations as well as problems with police.
In December 1992, Courtney Thomas, a non-IVP member, was selling drugs on IVP territory without permission. When an IVP member named Antwan told Thomas that he could not “pump” on IVP territory, Thomas threatened him. Antwan informed Arthur, who said he would “handle it.” That evening Arthur met two other IVP members, Cecil McKnight and Allen Ivy, at a wooded area where the IVP hid drugs and weapons. Arthur carried two guns. The three men went to the house at 161 Intervale Street where Thorn- *17 as was reportedly selling drugs. When Thomas got into his car in front of the house, Arthur fired repeatedly into the car, killing Thomas and wounding Thomas’s companion, Fleurette Farrell.
In 1995, Jennifer Monteiro, a neighborhood resident and reported drug dealer, was arrested on unrelated charges involving the use of fraudulent or stolen credit cards. Monteiro agreed to cooperate with the police and began making purchases from the IVP, including several purchases in 1996 from Arthur and Patrick. Audio tapes of these transactions were made. One purchase occurred on July 24, 1996, when Monteiro paged Patrick for two ounces of crack. Patrick directed her to go to a park near a neighborhood school, where Monteiro was met by a go-between named Terrence. Terrence handed Mon-teiro the drugs and then gave the money to Patrick, who was in his parked truck nearby. In August 1996, police arrested several IVP members, including Patrick and Arthur. Police seized cash, drugs, scales, and items with the IVP or Adidas logo from the homes of IVP members. From Jason Arthur’s home, police seized over 300 grams of crack cocaine, several thousand dollars, a scale, and a mirror with the IVP logo and the name “Kilo J.” They also seized a handgun from Patrick’s truck.
III.
A. RICO Enterprise: Instmctions and Sufficiency
Both defendants claim that the district court erred in rejecting their proposed jury instruction which defined a criminal “enterprise” under 18 U.S.C. § 1962(c) 3 as having an “ascertainable structure,” and that the jury’s verdict cannot stand on the evidence. The district court did not err, and the evidence supports the verdict.
The district court charged the jury that under RICO the term “enterprise”:
includes any individual, partnership, corporation, association or other legal entity, and any group of individuals associated in fact although not a legal entity. An enterprise may be a formal or an informal organization of individuals so long as they have associated together for a common purpose.... In the present case, it is alleged that each defendant, and others, were associated in fact to form an enterprise, called among other names, Intervale, the Intervale Posse, and IVP. To find that an association in fact existed, you must find that the alleged enterprise had an ongoing organization, formal or informal, and that its various associates functioned as a continuing unit for a common purpose. This means that although individuals may come and go, the enterprise must continue in an essentially unchanged form during substantially the entire period alleged in the indictment.
Note that the enterprise element is different from the racketeering activity element. Although the proof to establish these elements may overlap, proof of one does not necessarily establish the other. Rather, the enterprise must be an entity separate and apart from the pattern of racketeering activity in which it engages.
*18 The defendants requested that the district court further define the term “enterprise” by instructing the jury that “[a]t a minimum, the enterprise must exhibit some sort of structure for the making of decisions, whether it be hierarchical or consensual.” The court refused, and defendants now appeal its “enterprise” instruction.
Defendants based their request on a line of cases which they say support the requirement of an explicit “ascertainable structure” jury instruction under RICO.
See Chang v. Chen,
Here, the district court took its instruction almost directly from the language of the Supreme Court’s decision in
United States v. Turkette,
Defendants also argue that there was insufficient evidence of any enterprise. Not so. The gang was ongoing and identifiable: it changed its name from Adidas to the IVP, it had colors and signs, it had older members who instructed younger ones, its members referred to the gang as family, and it had “sessions” where important decisions were made, including decisions about taking action against rival drug dealers.
Defendants protest that the IVP is just a motley crew of young criminals and that it hardly constitutes the type of highly sophisticated organized crime that spurred Congress to enact RICO. Even if the IVP were a fledgling criminal organization, we doubt that Congress meant to give a pass to such fledgling organizations. In any event, the IVP was no innocent group of teenagers, but rather was sophisticated and experienced in its own way in the rough, often violent business of drug dealing. That there was yet no evidence the IVP had infiltrated legitimate businesses as organized crime frequently has done does not insulate the IVP from RICO’s reach. The IVP was well within Congress’ intended scope.
See Twrkette,
B. Swfficiency of the Evidence of Conspiracy
Arthur argues that there was no evidence of any meetings among the alleged conspirators resulting in Arthur’s agreement to perform the predicate acts under RICO. Arthur says the fact that he actually committed two or more acts of racketeering activity is not enough to show he was a conspirator. For these purposes, we focus on the predicate acts of murder and drug dealing.
The government, citing
United States v. Shifman,
As to the drug dealing, there was evidence that the IVP had “sessions” where members discussed the gang’s drug distribution business. That was enough to permit the inference of an agreement.
Patrick raises the same argument in a summary fashion in his brief, and we reject it for the same reasons.
C. Evidentiary Rulings
Questions of admissibility and relevance of evidence are reviewed for abuse of discretion.
United States v. Reeder,
1. Audio Tape Recordings
Patrick argues that it was error to admit into evidence audio tape recordings made by government informant Monteiro of her drug transactions with IVP members, including Patrick. Patrick says the tapes did not accurately reflect what was said and that he should have been permitted to inspect the original recordings and to cross examine as to the equipment used. The net result of the exclusion of this evidence, he says, violated the Confrontation Clause of the Sixth Amendment and Rule 403, Fed.R.Evid.
Patrick, however, did cross examine Monteiro about the tapes and the equipment used, and his objections to the tapes at trial were more limited than those on appeal. At trial he objected on the grounds that one tape had only a one-sided conversation and that another tape had a conversation in which Patrick did not take part.
In any event, we ignore the issue of waiver because there was no error in admitting the tapes. Monteiro authenticated the tapes under Rule 901, Fed. R.Evid., and the tapes were relevant, corroborating Monteiro’s testimony. Further, Patrick was given funds to pay for an analysis of at least one tape, a tape on which Patrick quoted Monteiro the price for an ounce of crack. The court rejected the conclusion of Patrick’s “expert” that something had been added to the tapes, finding the expert unqualified and his conclusion unsupported. The trial judge’s determination that the original tape would be best preserved for trial use by not turning it over to Patrick was very reasonable. 5
*21 2. Exclusion of Handwritten Notes of Informant Tips
Arthur complains that the district court excluded from evidence certain handwritten notes found in police files, including one purporting to contain a statement from a Peter Eden. In common, the notes recorded tips the police had received about who committed the Thomas murder. The defense theory was that the police had not adequately investigated the murder, as evidenced by these notes. Arthur argues that the notes therefore were not hearsay because they were not offered for their truth but rather for the inadequacy of the police investigation of other possible suspects.
The precise question is whether the trial court abused its discretion in excluding police notes (and related testimony) of anonymous calls from tipsters about who committed the Thomas murder. This involves several doctrines, starting with relevance. In fact, Arthur has two theories, each of which he says created doubt as to his own guilt: (1) that the notes were evidence that someone else committed the murder;
6
and (2) that the notes were evidence that the police investigation was unreliable.
7
As to the first, evidence that tends to prove that a person other than the defendant committed the crime is relevant.
See United States v. Crosby,
Arthur argues that police notes may be admissible as business records under Fed.R.Evid. 803(6), and we shall assume so for purposes of argument. But where those notes contain information from informants who are not themselves part of the business of police, that information is not admissible as an exception to the hearsay rule. The district court properly ruled that such hearsay within hearsay is not itself admissible.
See
Fed.R.Evid. 803 advisory committee’s note to para. 6 (citing
Johnson v. Lutz,
Arthur tries to avoid this problem by turning to his second theory: that the tips are admissible not for their truth but to show the inadequacy of the police investigation. He relies primarily on a state case that does use such broad language,
Commonwealth v. Reynolds,
Here, the defense theory is that someone else committed the murder, that this is shown by the fact that other names were given to the police by the tipsters, and that the police failed to take steps to adequately eliminate other possible suspects before settling on Arthur, thereby creating doubt as to Arthur’s guilt. However, there was little to show that the notes of the tipsters’ calls in fact furthered Arthur’s theory, or that there was an inadequate investigation, 10 and so the note con *23 tents were of questionable materiality under Fed.R.Evid. 401. But even if the notes had some probative value, the district court did not abuse its discretion in excluding them under Fed.R.Evid. 403.
Such speculative evidence of the inadequacy of the police investigation would have shifted the jury’s focus from the accusations against Arthur to accusations against the police, thus creating a real danger of unfair prejudice and jury confusion that “substantially outweighed” the evidence’s probative value. Fed.R.Evid. 403;
see United States v. McVeigh,
Arthur also argues that a note based on the statement from Peter Eden, a drug dealer, should have been admitted under the hearsay exception for declarations against penal interest. See Fed.R.Evid. 804(b)(3). The note of Peter Eden’s statement around the time of his arrest says that his (Eden’s) boss ordered the murder of Thomas, which Arthur argues inculpates Eden himself in both a drag conspiracy and the murder. 11 At trial, Eden invoked his Fifth Amendment privilege against self-incrimination and refused to testify. Arthur then sought admission of the note under Fed.R.Evid. 804(b)(3). Arthur argued that the Eden statement was exculpatory as to Arthur because it tended to implicate Eden’s boss (whom, he says, was certainly not Arthur), and that the information was corroborated by the fact that the police files were “fairly bursting with notes and memoranda” detailing tips identifying someone named “Paul,” “Paulo” or “Pablo” as Thomas’s killer.
The district court refused to admit the note because it doubted that the note exculpated Arthur, thought Arthur might himself be the “boss” referred to, and found no corroborating circumstantial evidence indicating the trustworthiness of the statement.
There was no abuse of discretion in excluding the note. Rule 804(b)(3) provides that a statement “tending to ex
*24
pose the declarant to criminal liability and offered to exculpate the accused is not admissible
unless
corroborating circumstances clearly indicate the trustworthiness of the statement.”
Id.
(emphasis added). It was up to Arthur, as the proponent, to clearly indicate the admissibility of the statement, and he did not establish that it was either trustworthy or exculpatory. The district court correctly viewed the statement in context.
Williamson v. United States,
Arthur argues, alternatively, that the various tip notes are admissible because his Sixth Amendment right to present exculpatory evidence here trumps the rules against hearsay evidence. Arthur cites, inter alia,
Chambers v. Mississippi
S. Exclusion of Portions of Search Warrant Affidavit
The district court excluded two portions of an affidavit in support of the search warrant for Fleurette Farrell’s belongings. Arthur concedes that the statements in the affidavit are hearsay but says they are nonetheless trustworthy and should have been admitted because the statements about the timing of certain events would have been useful to impeach the government’s principal witnesses against him. First, Arthur claims that the statement in the affidavit that police were still executing a search warrant at 161 Intervale Street when investigators arrived on the scene of the Thomas homicide contradicts the testimony of McKnight and Ivy, the key government witnesses, that the police had left the building before the shooting. Second, he argues that other statements in the affidavit contradict Farrell’s testimony concerning the time she arrived at 161 Intervale Street and whether she actually entered the building.
The district court acted within its discretion. 13 Both statements contain mul *25 tiple levels of hearsay, and Arthur points to no specific rule supporting admission of the testimony. Nor does the residual exception provided in Fed.R.Evid. 807 help Arthur since he did not raise the argument. The exception was, in any event, unavailable since Arthur could have called as a witness any officer who actually conducted the search of 161 Intervale Street, rather than simply relying on the hearsay statements. See Fed.R.Evid. 807 (requiring proof that “the statement is more probative on the point for which it is offered than any other evidence which the proponent can procure through reasonable efforts”).
A Altering a Chalk on Rebuttal Summation
Arthur argues the district court erred in allowing the prosecutor to “alter” a chronology used as a chalk (or jury aid) on rebuttal summation to support the government’s position as to the time of Thomas’s death. Although prosecution witness Farrell testified that the shooting occurred around 10:15 p.m., the defense theory was that it occurred earlier, between 8:30 and 9:00 p.m. On summation, the prosecutor used a timeline to assist the jury in understanding the sequence of events surrounding the Thomas murder. The chalk, which was never entered into evidence, initially listed the following times: undercover purchase (8:45 p.m.); search warrant (9:00 p.m.); and time of homicide (10:17 p.m.). On rebuttal summation, the prosecutor added to the chalk that Thomas was pronounced dead at 10:46 p.m., a fact already in evidence. This was entirely proper.
Cf. United States v. Morse,
D. Brady Claim
Patrick argues vaguely that the prosecution withheld exculpatory information in violation of
Brady v. Maryland,
Patrick’s brief fails to describe fully the nature of the problem or why he was prejudiced by learning the information at trial and not earlier. The government’s brief helpfully explains the issue. Two police officers who were conducting surveillance at the time, government informant Jennifer Monteiro, and TVP member Allen Ivy all testified about the same July *26 24, 1996 sale of drugs. They had different recollections about whether it was Patrick or another IVP member who was in the area on a bicycle around the time of the transaction. However, there is no evidence the government knew of the discrepancy before trial, and defense counsel cross examined on the different versions. During trial the names of the two police officers were given to defense counsel. Both officers were called and testified. 14 There was neither a Brady violation nor prejudice.
E. Posti-Trial Motion for Investigative Funds
Arthur claims the district court abused its discretion in denying his motion for additional funds under 18 U.S.C. § 3006A to conduct a post-trial investigation. Arthur’s counsel told the trial court he needed the funds to find additional witnesses who would cast doubt on Farrell’s testimony. Although he knew the name of one witness who was at 161 Inter-vale Street on the night of the Thomas murder, counsel conceded he was “speculating on precisely what [these witnesses] would say.” The district court found no evidence to support the conclusion that exculpatory evidence was withheld and denied the motion on that basis alone.
15
A denial of a motion for funds under section 3006A is reviewed for abuse of discretion.
See United States v. De Jesus,
F. Sentencing
Defendants also challenge their sentences on various grounds.
Patrick asserts that the district court wrongly sentenced him based on its finding that he was involved with more than 1.5 kilograms of crack cocaine because the court denied his motion under 18 U.S.C. § 3006A for an independent examination of some of the crack cocaine to determine its weight. Patrick also challenges his four-level enhancement for his role as a “leader or supervisor” under U.S.S.G. § 3B1.1 and the district court’s refusal to depart downward based on his family ties and responsibilities.
Arthur argues that the district court erred in imposing a three-level enhancement for his role as a “manager or supervisor” under U.S.S.G. § 3B1.1 and a two-level enhancement for employing juveniles in the drug operations under U.S.S.G. § 3B1.4.
Patrick and Arthur also each make claims based on
Apprendi v. New Jersey,
We discuss these arguments in turn and affirm the sentences.
1. Denial of Motion for Funds to Conduct Independent Weighing
In connection with his sentence, Patrick appeals the district court’s denial of his motion for funds to conduct an independent weighing and examination of the amount of crack cocaine attributed to him. We review his claim for abuse of discretion,
see De Jesus,
2. Sentencing Enhancements
Review of challenges to the ev-identiary support of a sentencing guidelines enhancement is for clear error.
See, e.g., United States v. Coviello,
Arthur objects to the three-level enhancement for his role as a “manager or supervisor” under U.S.S.G. § 3Bl.l(b). The district court found that while Arthur was lower in the IVP hierarchy than Patrick, he supei*vised and managed drug transactions since he determined the quantity involved in each particular transaction. Arthur also objects to the two-level enhancement under section 3B1.4 for “using a minor to commit a crime.” The district court found that numerous minors were used in the RICO and drug conspiracies and that Arthur himself used minors to sell drugs. Neither finding was clearly erroneous.
The three-level enhancement for Arthur’s managerial or supervisory role was supported by evidence that he owned and distributed large quantities of crack (over 300 grams were found in his house), gave orders to younger IVP members, and used violence to eliminate rivals like Thomas.
See United States v. Alicea,
3. Downward Departure
A district court’s discretionary refusal to depart downward is unreviewable unless the court believed it lacked authority to do so.
See, e.g., United States v. Snyder,
L Apprendi Claims
Neither defendant raised any
Apprendi
argument before the district court, and so we review their
Apprendi
arguments here for plain error.
See United States v. Robinson,
Arthur cites Apprendi as bearing upon his attack on his sentencing guideline enhancements. We reject that challenge.
See, e.g., Robinson,
IV.
Defendants’ convictions and sentences are affirmed.
So ordered.
Notes
. Thirteen others were indicted along with Arthur and Patrick. Twelve pled guilty to various charges prior to trial; one, Terrence Williams, successfully moved to sever his case from Arthur and Patrick’s, and was convicted at trial of conspiracy to distribute crack cocaine. The court originally consolidated Williams' appeal with this one, but then granted the government’s motion to file a separate brief in Williams’ case.
. "Pumping” described a way of serving the drug buyer, just as a gas station attendant pumps gas for his or her customer.
. Section 1962(c) makes it unlawful:
for any person employed by or associated with any enterprise engaged in, or the activities of which affect, interstate or foreign commerce, to conduct or participate, directly or indirectly, in the conduct of such enterprise’s affairs through a pattern of racketeering activity or collection of unlawful debt.
Section 1962(d) prohibits conspiracy to violate section 1962(c).
. Shifman says that the government must prove: (1) the existence of an enterprise affecting interstate commerce, (2) that the defendant knowingly joined the conspiracy to participate in the conduct of the affairs of the enterprise, (3) that the defendant participated in the conduct of the affairs of the enterprise, and (4) that the defendant did so through a pattern of racketeering activity by agreeing to commit, or in fact committing, two or more predicate offenses. Id. (emphasis added).
. Finally, to the extent Patrick complains that a second motion for more money for analysis of the tapes was denied, the court did not abuse its discretion in denying that motion.
.That is the thrust of
State v. Flores,
. These two theories overlap in places. When, for example, Arthur asserts that the tipsters said "flatly” that another person murdered Thomas, he seems less to be defining the notes as non-hearsay showing the inadequacy of the police investigation than claiming the notes should have been admitted for their truth, i.e., that such third person, and not Arthur, murdered Thomas.
. We recognize that anonymous tipsters are hardly likely to make themselves available to defense counsel.
. Reynolds is in any event a case not decided under the federal rules of evidence.
. Detective Mahoney, the officer in charge of the Thomas investigation, testified on voir dire that his usual practice was to follow up on informant tips, though he could not recall, *23 six years and "400 homicides" later, what action he took on each and every tip. This does not suggest an inadequate investigation of the Thomas murder.
. The note attributes the statement to a Paul Eden, not Peter Eden, but is apparently a record of Peter Eden's arrest. Arthur’s contention is sheer speculation that this shows thaL the "Paul” referred to in the note was Peter Eden’s boss, and therefore that this Paul, and not Arthur, murdered Thomas. The record also shows there was an IVP member named Paul.
. Arthur says that Peter Eden operated out of 161 Intervale Street, an area not within IVP territory. The district court thought the evidence was otherwise.
. Arthur also claims that the district court erred in allowing the government to cite Farrell’s testimony in closing argument, where, based on the affidavit, it had reason to know *25 her testimony contained false and misleading statements. There was no error.
. Neither officer was able to identify the male who "burned'' their surveillance operation by looking into their vehicle.
. The court denied Arthur's new trial motion on the same basis.
