United States v. Eric Cheek ( 2014 )


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  •                                In the
    United States Court of Appeals
    For the Seventh Circuit
    No. 12-2472
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    v.
    ERIC MICHAEL CHEEK,
    Defendant-Appellant.
    Appeal from the United States District Court for the
    Central District of Illinois.
    No. 11-CR-10040 — James E. Shadid, Chief Judge.
    ARGUED OCTOBER 31, 2013 — DECIDED JANUARY 22, 2014
    Before BAUER, MANION, and ROVNER, Circuit Judges.
    MANION, Circuit Judge. Eric Cheek distributed illegal drugs
    for most of his adult life. Prior to this case, he was convicted of
    twelve offenses, including nine felony drug offenses. Following
    an extensive investigation, law enforcement officers arrested
    Cheek in 2011 for drug distribution activities. A jury convicted
    Cheek of four felonies, and the district court sentenced Cheek
    to 576 months’ imprisonment. Cheek appeals both his convic-
    tions and sentence. For the reasons discussed below, we affirm.
    2                                                 No. 12-2472
    I. Background
    From 2002–2003, Eric Cheek regularly sold marijuana and
    crack cocaine to a drug dealer, Corey Eason, and Eason’s
    girlfriend, Tabitha Harris. While Cheek was in prison in 2004,
    one of his associates, Antonio Seymon, supplied Eason and
    Harris with drugs. After he was released, Cheek again sup-
    plied Eason and Harris with marijuana and crack cocaine. He
    also supplied two other drug dealers, Langston Pates and
    Andra Pace, with marijuana. He was subsequently incarcer-
    ated again in 2008, and before his release in 2010, Cheek
    informed Eason, Brandon Williams (who had been in the same
    prison as Cheek in 2008), and Seymon that he would continue
    selling drugs upon his release. In August 2010, law enforce-
    ment persuaded Eason to cooperate in the investigation of
    Cheek. Eason performed controlled buys of illegal drugs from
    Cheek and secretly recorded his interactions with Cheek. With
    court authorization, law enforcement also intercepted more
    than 20,000 phone conversations and text conversations from
    telephones used by Cheek and his associates. The investigation
    uncovered continued drug operations until Seymon was
    arrested on March 23, 2011. Cheek subsequently was arrested
    on April 5, 2011.
    A grand jury indicted Cheek and three co-defendants,
    Tabitha Harris, Brandon Williams, and Antonio Seymon, for
    various drug offenses. Cheek was charged with conspiring to
    possess and distribute more than 280 grams of crack cocaine
    and more than 100 kilograms of marijuana from 2001 to 2011;
    intending to distribute more than 28 grams of crack cocaine on
    August 9, 2010; intending to distribute marijuana on March 23,
    2011; and using a telephone on February 11 and 23, 2011, to
    No. 12-2472                                                   3
    facilitate the drug conspiracy. All three co-defendants pleaded
    guilty. Cheek did not.
    Prior to Cheek’s trial, the government filed an information
    pursuant to 
    21 U.S.C. § 851
     expressing its intent to seek an
    enhanced sentence for Cheek based on seven prior felony drug
    convictions. In a separate pretrial filing, the government
    identified several potential expert witnesses. Most of these
    experts were forensic chemists who were not called at trial
    because their opinions were presented at trial by stipulation.
    However, one of the proposed experts (who did not testify at
    trial) was a Drug Enforcement Agency supervisor who was
    prepared to testify generally about the use of code words by
    drug dealers.
    A few weeks before trial, Cheek sent a hand-written letter
    to Harris’s teenage daughter in response to a letter he had
    received from the daughter. Cheek’s letter stated in pertinent
    part:
    I remember when I met your little butt too. Yes I am
    your uncle and you would probably be out there if
    I wasn’t hard on you at times. I only did it out of
    love for you and fear of what you could turn into
    without guidance. You were the one Eric & Mikey
    [Cheek’s sons] asked about 1st back in the day. … It’s
    been so long since the days I tried to teach you about
    a dollar by letting you watch the boys for $10–$15.
    Now you’ve got your own little one. And a pretty
    one at that. You know she would love me right? I
    am gonna fight to the end to be able to raise my kids
    and see yall again soon. Free [meaning Tyrell
    4                                                  No. 12-2472
    Binion] got 54 months, so he will be out soon. My
    situation ain’t or wasn’t bad shall I say. I won’t lie
    Isa, they didn’t have shit on none of us. To prove it
    why would they need your Mom to lie on me if they
    had something? But the worse part is her own
    lawyer tricked her because she could’ve beat the
    case. She couldn’t get more than 5 if she would’ve
    just plead guilty without lying on me. Now my life
    and the lives of my kids lay in the balance of her
    story she let them make her say. The most she can
    get is 5 and me LIFE if she doesn’t tell the truth. Isa
    that means I will NEVER see my kids or family
    again. Nor see yall or any of the people I know and
    love. Who is gonna teach Er[i]c & Mikey to fight and
    be men? Who is gonna keep boys away from Emmy
    [Cheek’s daughter] and not let her be like her mom?
    LIFE means forever!
    So as you can see why I am saying this but, yes I
    love you … & your mom. But no I will never respect
    her decision. Still I am looking at LIFE and not
    because of anybody but her, the person I thought
    would never lie on me or hurt me. Even if she told
    the truth she wouldn’t be looking at shit but maybe
    6 more months but at least I wouldn’t be in jail for
    the Rest of my life. So I am praying that she don’t let
    them keep scaring her. They are gonna use plenty of
    scare tactics. But it’s up to us to man up or woman
    up.
    …
    No. 12-2472                                                                  5
    If God is willing you know who won’t tell that lie
    and I will be there to see yall in the near future. My
    lawyer [is] saying that is the only thing they have
    against me is her.
    At trial, the government called law enforcement officers
    and cooperating witnesses, including Eason, Harris, Pates,
    Pace, and Victoria Williams (who lived with Eason during the
    conspiracy). The government also offered selections from the
    intercepted telephone communications and interactions
    recorded by Eason. The government provided the jury with
    transcripts of these recordings that contained (within square
    brackets) interpretations of certain words and phrases from the
    recordings. The intercepted communications, recordings, and
    transcripts were admitted into evidence by stipulation. Cheek
    stipulated that the communications, recordings, and transcripts
    were accurate, but refused to stipulate to the accuracy of the
    interpretations within the brackets. Before the recordings were
    played, the district court instructed the jury that the recordings
    were the actual evidence and that the transcripts were not
    evidence1. The government elicited testimony from FBI Special
    Agent Greg Catey, the lead case agent, who offered his
    opinions regarding the meaning of the words and phrases
    immediately preceding the bracketed information contained
    within the transcripts. Agent Catey testified that he had
    extensive experience in drug enforcement and had participated
    in numerous investigations during his law enforcement career.
    1
    This instruction is difficult to reconcile with the fact that the intercepted
    communications, recordings, and transcripts were admitted into evidence
    by stipulation.
    6                                                  No. 12-2472
    However, he also testified that he knew the meaning of the
    words in the transcripts based on his specific involvement in
    the investigation of Cheek and his co-conspirators. Police
    Detective James Ferguson similarly offered testimony about
    some of the code words and phrases used by Cheek and his co-
    conspirators, and stated that his knowledge was based on his
    participation in this investigation.
    In his defense, Cheek argued that he only sold marijuana
    and did not conspire with anyone. The jury convicted Cheek
    on all counts. By special verdict, the jury found that the
    conspiracy involved at least 28 grams but less than 280 grams
    of crack cocaine and 100 kilograms or more of marijuana.
    Cheek’s pre-sentence report (“PSR”) found that Cheek was
    responsible for the drug-quantity-equivalent of between 3,000
    and 10,000 kilograms of marijuana, which placed his base
    offense level at 34. However, the PSR recommended a 2-level
    upward adjustment under U.S.S.G. § 3B1.4 because Cheek
    used a minor in commission of the conspiracy; a 4-level
    upward adjustment under U.S.S.G. § 3B1.1(a) because Cheek
    was the leader of a drug-trafficking organization; and a 2-level
    upward adjustment under U.S.S.G. § 3C1.1 for obstruction of
    justice because of the letter he sent to Harris’s daughter. The
    PSR recommended a criminal history category of IV due to
    nine criminal history points. (The PSR found that Cheek had
    twelve prior convictions, including nine felony drug convic-
    tions.) Ultimately, the PSR calculated Cheek’s total offense
    level at 42. Given Cheek’s criminal history category of IV, the
    PSR calculated Cheek’s Guidelines range to be 360 months to
    life. Cheek objected to the obstruction of justice enhancement.
    But even without that enhancement, Cheek’s Guidelines range
    No. 12-2472                                                    7
    would have been 360 months to life. Cheek did not otherwise
    object to the PSR’s Guidelines calculations or findings regard-
    ing his prior convictions.
    Counts I and II carried the greatest statutory maximum
    penalties: 480 months. The statutory maximum penalty for
    count III was 120 months. The statutory maximum penalties
    for counts IV and V were 48 months. However, 
    21 U.S.C. § 841
    (b)(1)(B)’s career criminal provision authorized the
    district court to impose a sentence of up to life on either count
    I or II. In order to do so, the district court must “before
    pronouncement of sentence inquire of the person with respect
    to whom the information was filed whether he affirms or
    denies that he has been previously convicted as alleged in the
    information, and shall inform him that any challenge to a prior
    conviction which is not made before sentence is imposed may
    not thereafter be raised to attack the sentence.” 
    21 U.S.C. § 851
    (b). At sentencing, the district court did not comply with §
    851(b).
    The government requested a prison sentence of “not less
    than 40 years,” and argued that Cheek was “a bane to society”
    whose operations covered significant portions of Illinois and
    included enormous drug quantities. The government empha-
    sized that it was unusual that Cheek had managed to remain
    out of custody after racking up so many prior felony drug
    convictions. The government characterized Cheek as a dishon-
    est and manipulative person who was willing to use a minor
    to further his conspiracy and used profane language in her
    presence when she “couldn’t get his money laundering down
    right.” In closing, the government reiterated its request “for a
    sentence within the guideline range.”
    8                                                    No. 12-2472
    In response, Cheek’s attorney emphasized that violence
    was never part of Cheek’s admittedly extensive drug-dealing
    career. Cheek’s attorney also observed that, if the district court
    imposed a 480-month sentence, Cheek would be “77 years old
    if he was ever able to get out of the penitentiary.” During his
    allocution, Cheek admitted that he was not “the best person in
    the world,” but repeatedly asserted that he was “not the worst
    person in the world either.” Cheek briefly detailed a past
    incident in which he had assisted the police by informing them
    that accusations against Detective Ferguson (who happened to
    be a witness at Cheek’s trial), involving misconduct allegedly
    occurring in Cheek’s presence, were false. Cheek also told the
    district court that his mother had died when he was 16 years
    old, and that he had four children whom he loved and wanted
    to be there for.
    After reciting the factors from 
    18 U.S.C. § 3553
    (a), the
    district court told Cheek, “I’m not saying you’re a bad person.”
    The district court commented that Cheek was clearly an
    intelligent person who spoke well and made a “nice appear-
    ance.” But the district court noted that, despite Cheek’s
    potential, he had chosen from a young age to engage in
    criminal drug activity. The district court observed that Cheek
    had opportunities to turn aside, but time and again “chose to
    continue in the drug world, and the drug trafficking world,”
    which leads “only to violence and death on city streets of
    young people or a sentence to prison.” The district court
    concluded that based on Cheek’s decision to play by his own
    rules and significant history of criminal activity, a significant
    prison sentence was appropriate. Therefore, the district court
    imposed prison sentences of 576 months on counts I and II. The
    No. 12-2472                                                            9
    district court also imposed prison sentences of 120 months on
    count III and 48 months on counts IV and V. The court directed
    that all sentences would run concurrently. Cheek appeals both
    his convictions and sentences.2
    II. Analysis
    On appeal, Cheek argues that his convictions should be
    vacated because Agent Catey’s testimony included expert
    testimony that should not have been admitted, and because the
    jury should not have been provided (either at trial or in
    deliberations) with copies of the transcripts containing Agent
    Catey’s interpretations (in square brackets) of various words
    and phrases from the recordings played at trial. Cheek also
    argues that his sentence should be vacated because the district
    court failed to comply with the procedure provided in § 851(b).
    Additionally, Cheek contends that the district court violated
    his rights under the Fifth and Sixth Amendments to the
    Constitution as interpreted by the Supreme Court in Apprendi
    v. New Jersey, 
    530 U.S. 466
     (2000), when the district court
    invoked § 841(b)(1)(B), which enhanced Cheek’s potential
    sentence beyond the 480-month statutory maximum penalties
    for counts I and II, because the jury did not find beyond a
    reasonable doubt that Cheek had been convicted of the prior
    felonies supporting application of § 841(b)(1)(B). Cheek also
    argues that his sentence is procedurally unreasonable because
    the district court erred in imposing the obstruction of justice
    enhancement and failed to consider meaningfully the argu-
    2
    Because Cheek’s sentences run concurrently, we refer to them as his 576-
    month sentence.
    10                                                   No. 12-2472
    ments Cheek offered in mitigation of his sentence under
    § 3553(a). Finally, Cheek contends that his 576-month sentence
    is a de facto life sentence that is substantively unreasonable.
    A. Agent Catey’s Testimony and the Opinions Contained
    in the Transcripts Provided to the Jury
    Cheek’s challenges to his convictions arise from portions of
    Agent Catey’s testimony at trial and from the use of transcripts
    (both during trial and deliberations) containing Agent Catey’s
    interpretations (in square brackets) of various words and
    phrases within the transcripts. Because he did not object,
    Cheek concedes that our review is for plain error. “Applying
    this standard, we reverse only when we find: ‘(1) an error or
    defect (2) that is clear or obvious (3) affecting the defendant’s
    substantial rights (4) and seriously impugning the fairness,
    integrity, or public reputation of judicial proceedings.’” United
    States v. Johnson, 
    680 F.3d 966
    , 973 (7th Cir. 2012) (quoting
    United States v. Anderson, 
    604 F.3d 997
    , 1002 (7th Cir. 2010)).
    Agent Catey’s Testimony
    Cheek contends that Agent Catey offered expert testimony
    when testifying as a lay witness. Specifically, Cheek argues
    that Agent Catey testified as an expert about the meaning of
    drug code words and phrases used by the conspirators, the
    price for a kilo of cocaine, the main ingredient in crack cocaine,
    how a wiretap is physically conducted, and the meaning of
    such terms as “wire room, minimization, sessions, magneto
    optical disk, pen register trap and trace, spin off wiretap,
    special federal officer, case agent, controlled buy, front and
    controlled payment.” Cheek argues that allowing Agent Catey
    to offer expert testimony under the guise of lay testimony
    No. 12-2472                                                    11
    cloaked that testimony in an aura of expertise without subject-
    ing it to the reliability standards of Fed. R. Evid. 702 or the
    mandatory pretrial disclosure requirements of Fed. R. Crim. P.
    16.
    The government may use a law enforcement officer as both
    an expert and lay witness in the same trip to the witness stand.
    United States v. York, 
    572 F.3d 415
    , 425 (7th Cir. 2009). However,
    there are some inherent dangers with this kind of dual testi-
    mony. For example, the witness’s dual role might confuse the
    jury. Or, the jury might be smitten by an expert’s “aura of
    special reliability” and therefore give his factual testimony
    undue weight. Or, “the jury may unduly credit the opinion
    testimony of an investigating officer based on a perception that
    the expert was privy to facts about the defendant not presented
    at trial.” 
    Id.
     (citations omitted).
    The government argues that these concerns do not apply in
    this case because Agent Catey was only called as a lay witness.
    As far as Agent Catey’s testimony about the drug code words
    and phrases used by Cheek and his co-conspirators are
    concerned, we agree. When a law enforcement officer testifies
    about the meaning of drug code words used by defendants
    based on personal knowledge obtained from the investigation
    of those defendants, the officer is testifying as a lay witness.
    United States v. Moreland, 
    703 F.3d 976
    , 983 (7th Cir. 2012).
    However, if the officer testifies from “expertise having derived
    from his involvement in other drug investigations,” then the
    officer is testifying as an expert witness. 
    Id.
     As the lead case
    agent, Agent Catey was intimately involved in the investiga-
    tion of Cheek and his co-conspirators. For example, he re-
    viewed more than 20,000 intercepted communications and
    12                                                 No. 12-2472
    interviewed more than 100 witnesses as part of the investiga-
    tion into the conspiracy. Moreover, when the prosecutor
    questioned Agent Catey about the meaning of the drug code
    words used by the conspirators, the prosecutor phrased his
    questions in terms of Agent Catey’s “understanding based on
    this investigation” or “familiarity with this investigation.”
    These facts convince us that Agent Catey’s testimony about the
    drug code words and phrases used by Cheek and his co-
    conspirators “was based on his own personal observations and
    perceptions derived from this particular case.” United States v.
    Rollins, 
    544 F.3d 820
    , 833 (7th Cir. 2008) (finding law enforce-
    ment witness’s interpretations of code words as admissible lay
    testimony where witness based interpretation only on listening
    first-hand to numerous recorded telephone calls in that
    particular investigation). And the fact that Agent Catey was an
    experienced investigator does not alter this conclusion. See
    Moreland, 703 F.3d at 983 (“Had the agent been testifying
    exclusively as a lay witness about the code words he had
    learned the meaning of in the course of his investigation of the
    defendants’ conspiracy, it would not have been improper to
    introduce him to the jury as an experienced investigator, rather
    than a novice listening to taped conversations of drug conspir-
    ators for the first time, any more than it is improper to ask an
    eyewitness whether he has good vision.”). At the very least, it
    would not have been “clear or obvious” to the district court
    that Agent Catey was offering expert testimony about the drug
    code words and phrases used by the conspirators.
    Moreover, even if Agent Catey’s testimony about the drug
    code words and phrases used by the conspirators could be
    labeled as improperly admitted expert testimony, any error
    No. 12-2472                                                    13
    would be harmless. First, the overwhelming evidence offered
    at trial demonstrates that Agent Catey’s interpretations of the
    drug code words and phrases used by Cheek and his conspira-
    tors were accurate. For example, Cheek focuses on Agent
    Catey’s testimony that the words or phrases “girl,” “girly,” or
    “bumping into ol’ girl” were references to “cocaine or crack
    cocaine.” Harris, Eason, and Williams testified that these terms
    referred to cocaine or crack cocaine. See Trial Tr. 161 (Harris
    testifying that “ol’ girl” referred to “cocaine”); 428–29 (Eason
    testifying that “ol’ girl” means “cocaine” and “girl” means
    “cocaine”); 675–76 (Williams testifying that “Christina, ol’ girl,
    [and] white girl” refer to “crack cocaine”). And Goodwin
    testified that Cheek used these terms to refer to cocaine. See
    Trial Tr. 631–33; 637 (Goodwin testifying that Cheek used “ol’
    girl” to refer to “cocaine”). Second, at oral argument, Cheek’s
    counsel conceded that Agent Catey would likely have been
    qualified as an expert. See United States v. Jones & Brown, Nos.
    11-3864 & 12-1695, slip op. at 10, 
    2014 WL 68143
     (7th Cir. Jan.
    9, 2014) (finding no harm from failing to comply with Rule 702
    with respect to a detective who offered expert testimony where
    the defendant did not challenge the detective’s qualifications
    or the validity of his testimony); United States v. Tucker, 
    714 F.3d 1006
    , 1016 (7th Cir. 2013) (“Further, [the defendant] does
    not question Officer Baranek’s qualifications, and there is little
    doubt he would have been able to be qualified as an expert,
    thus failure to ‘formally anoint’ him as such is harmless.”).
    Indeed, before trial the government disclosed that it would call
    a DEA agent to testify regarding the meaning of drug code
    words and phrases used by the drug dealers in general. Thus,
    Cheek had notice that the government intended to offer the
    14                                                             No. 12-2472
    kind of testimony that Agent Catey offered concerning the
    meaning of drug code words and phrases used by the conspir-
    ators. See Jones & Brown, Nos. 11-3864 & 12-1695, slip op. at 10.
    For both these reasons, no harm could have come to Cheek
    from failing to subject Agent Catey’s testimony about the drug
    code words and phrases used by the conspirators to the
    reliability standards of Rule 702 or the mandatory pretrial
    disclosure requirements of Rule 16.
    Assuming that Agent Catey’s testimony about the drug
    code words and phrases used by the conspirators was lay
    testimony, Cheek contends alternatively that the testimony
    was not “helpful,” and consequently inadmissible, see Fed. R.
    Evid. 701(b), because Agent Catey testified that the code words
    could refer either to cocaine or crack cocaine—but Cheek was
    only charged with crack cocaine offenses. We disagree. It
    would have been improper for Agent Catey to state that the
    code words referred only to crack cocaine given that they also
    could refer to powder cocaine.3 Agent Catey’s testimony may
    have been insufficient on its own to support Cheek’s crack
    cocaine convictions, but the testimony was certainly helpful to
    the jury inasmuch as it excluded any other potential interpreta-
    tion of the code words besides either “cocaine” or “crack
    cocaine.” And Cheek does not raise an insufficiency argument
    on appeal.4
    3
    Eason confirmed that “ol’ girl” and “girl” can refer either to crack cocaine
    or regular cocaine.”
    4
    Relatedly, Cheek argues that this testimony blurred the distinction
    between powder cocaine and crack cocaine, which could have confused the
    (continued...)
    No. 12-2472                                                              15
    All of Agent Catey’s remaining testimony about which
    Cheek complains could be properly admitted lay testimony. A
    witness could form true opinions regarding whether cocaine is
    the main ingredient in crack cocaine, how a wiretap is con-
    ducted, or the meanings of terms such as “wire room,
    minimization, sessions, magneto optical disk, pen register trap
    and trace, spin off wiretap, special federal officer, case agent,
    controlled buy, front and controlled payment,” without that
    knowledge being based on “scientific, technical, or other
    specialized knowledge.” Fed. R. Evid. 701. For example, the
    4
    (...continued)
    jury into convicting Cheek for crack cocaine offenses even though the jury
    only believed that Cheek had committed powder cocaine offenses. But
    evidence admitted at trial distinguished between powder and crack cocaine.
    See Trial Tr. 672 (Williams testifying that she received both “powder and
    hard crack”); 155 (Harris testifying that she’d never seen Cheek “with
    crack,” but that twice bought cocaine from him); 532 (stipulation distin-
    guishing between “cocaine base” and “powder cocaine”). And Cheek’s
    defense was not that he was selling powder cocaine instead of crack
    cocaine. Moreover, as noted, while Agent Catey’s testimony about the drug
    code words and phrases used by the conspirators would not have been
    sufficient on its own to support Cheek’s crack cocaine convictions, Cheek
    does not raise an insufficiency argument on appeal. Anyway, the govern-
    ment offered sufficient evidence that Cheek committed the crack cocaine
    offenses with which he was charged. See, e.g., Trial Tr. 113 (Agent Catey
    testifying that cooperating witnesses recorded purchases of crack cocaine
    from Cheek); 125 (Harris testifying that Cheek’s conspiracy distributed
    crack cocaine); 405–06 (Eason testifying that he obtained crack cocaine from
    Cheek); 611 (Detective Ferguson testifying about controlled buy of crack
    from Cheek). Indeed, Eason testified that Cheek supplied him with 63
    grams of crack cocaine every few weeks during 2002–2003, 2006–2008, and
    2010–2011. See Trial Tr. 405–06, 411–13, 417–20. Thus, Cheek sold signifi-
    cantly more than 280 grams of crack cocaine to just one of his customers.
    16                                                      No. 12-2472
    witness might have observed another person making crack
    cocaine or conducting a wiretap; or the witness might consult
    a dictionary. When Agent Catey testified about the ingredients
    of crack cocaine, he did not identify the source of his knowl-
    edge. And when he testified that $23.50 referred to $23,500 for
    a kilo of cocaine, he testified that his opinion was based on his
    review of the calls. With respect to this testimony, precisely
    because Agent Catey did not specify whether his opinions
    were based on “scientific, technical, or other specialized
    knowledge,” we cannot say that it was “clear or obvious” that
    the testimony was expert in nature.
    Moreover, Cheek does not dispute the accuracy of any of
    this testimony.5 Indeed, as noted, Cheek’s counsel conceded
    that Agent Catey would likely have been qualified as an
    expert. Therefore, the concern that Agent Catey’s uncontested
    testimony may have been cloaked in an aura of expertise, while
    not concomitantly being subjected to the reliability standards
    of Rule 702 or the mandatory pretrial disclosure requirements
    of Rule 16, could not have affected Cheek’s substantial rights.
    See United States v. Sykes, 
    614 F.3d 303
    , 312 (7th Cir. 2010) (“An
    error affects substantial rights when it ‘affected the outcome of
    the district court proceedings.’” (quoting United States v. Olano,
    
    507 U.S. 725
    , 734 (1993))).
    Perhaps Cheek believes that Agent Catey’s testimony on
    these matters cloaked the rest of his testimony—including
    matters that were contested—in an aura of expertise. But
    5
    Detective Ferguson also testified that “$23.50” meant “$23,500.” But
    Cheek does not object to Detective Ferguson’s testimony.
    No. 12-2472                                                      17
    Cheek does not explain how Agent Catey’s undisputed
    testimony about the ingredients of crack cocaine, the meanings
    of technical terms, or the process for conducting a wiretap
    would bolster the rest of his testimony. Moreover, the govern-
    ment did not explicitly present Agent Catey to the jury as an
    expert. Consequently, there was little risk that the jury might
    have been confused by Agent Catey’s “dual roles” as both an
    expert and lay witness, that his status as an expert might
    overawe the jury, or that the jury might have mistakenly
    believed that his expert opinions were based on facts about the
    defendant not presented at trial. See United States v. Gar-
    cia-Avila, 
    737 F.3d 484
    , 489 (7th Cir. 2013) (observing that the
    risk of unfair prejudice is reduced where a witness does not
    testify both as an expert and as a lay witness); Moreland, 703
    F.3d at 983 (finding no “realistic danger” that the jury might be
    smitten by the agent’s testimony). And the evidence of Cheek’s
    guilt was overwhelming—Cheek admitted that he sold
    marijuana, and Detective Ferguson as well as a number of
    Cheek’s co-conspirators testified that Cheek distributed crack
    cocaine. Therefore, any error in admitting Agent Catey’s
    testimony on these matters would be harmless. See United
    States v. Gaytan, 
    649 F.3d 573
    , 582–83 (7th Cir. 2011); Rollins, 544
    at 833 (“Besides, the other evidence of guilt of these two
    defendants is so overwhelming that even if the [officer’s]
    ‘impressions’ testimony had crossed the line, it would have, at
    worst, amounted to harmless error.”).
    The Transcripts
    Cheek also contends that the district court erred in allowing
    the jury to have the transcripts (both during trial and delibera-
    tions) containing Agent Catey’s interpretations. These interpre-
    18                                                        No. 12-2472
    tations were inserted in square brackets following various code
    words and phrases from the recordings. Specifically, Cheek
    argues that this unfairly bolstered Agent Catey’s testimony
    and usurped the fact-finding function of the jury.6
    “[D]istrict courts have wide discretion in determining
    whether to allow juries to use written transcripts as aids in
    listening to audiotape recordings.” United States v. Breland, 
    356 F.3d 787
    , 794 (7th Cir. 2004) (citing United States v. Keck, 
    773 F.2d 759
    , 766 (7th Cir. 1985)). And “[w]e have previously
    permitted transcripts to be admitted at trial and used by the
    jury during their deliberations when the underlying tapes are
    actually played during the trial (as was the case here).” Breland,
    
    356 F.3d at
    794–95 (collecting cases). In fact, Cheek’s counsel
    explicitly informed the district court that the defense had no
    objection to providing the transcripts to the jury. See Tr. 67, 838.
    Even assuming arguendo that providing the transcripts with
    Agent Catey’s interpretations to the jury was error, any error
    would not have been “clear or obvious” to the district court
    given our precedent cited above and Cheek’s disclaimer of any
    objection. Moreover, Cheek does not identify which (if any) of
    Agent Catey’s interpretations contained in the transcripts are
    inaccurate. If Agent Catey’s interpretations are correct, Cheek’s
    substantial rights could not have been affected and the
    6
    Based on interpretations in the transcripts that read “cocaine/crack
    cocaine,” Cheek reiterates his concern that the jury may have been misled
    into convicting him for the crack cocaine offenses based on evidence that
    may have only proved powder cocaine offenses. For the reasons discussed
    above, this argument is without merit.
    No. 12-2472                                                                  19
    fairness, integrity, or public reputation of judicial proceedings
    could not have been seriously impugned.7
    For support, Cheek cites our decision United States v. Berry,
    
    92 F.3d 597
    , 601 (7th Cir. 1996), wherein, unbeknownst to the
    judge, the jury retained transcripts provided to them at trial
    during their deliberations. The district court granted the
    defendant a new trial and the government appealed.8 On
    appeal, we observed that “the government’s case was not
    strong,” and that our “deferential review” led us to conclude
    that the district court did not abuse its discretion in granting a
    new trial. 
    Id.
     at 601–02. We stated that “[a] criminal defendant
    has ‘a right to be tried on the basis of the evidence admitted at
    7
    We observe that Detective Ferguson testified that a number of the words
    or phrases in the transcripts meant what the interpretations in the adjacent
    square brackets stated. For example, the transcripts contained the word
    “kilograms” in square brackets following the word “books,” the phrase
    “1/8th ounce or ‘8-ball’ sample” in square brackets following the word
    “ball,” and the phrase “$23,500 per kilogram” in square brackets following
    the number “$23.50,” Detective Ferguson testified that he believed the word
    “book” as used in the recorded conversations between Cheek and others
    referred to a “kilogram of cocaine.” He also testified that the word “ball”
    meant “a ball of cocaine” that was being given to a customer as a “sample.”
    And he testified that “$23.50” meant “$23,500.” Yet Cheek does not contend
    on appeal that the inclusion of these interpretations in square brackets in
    the transcripts unfairly bolstered Detective Ferguson’s trial testimony or
    usurped the fact-finding role of the jury.
    8
    Actually, the government appealed twice. The first time we remanded for
    the district court to explicitly determine whether there was a reasonable
    possibility that the jury’s use of the transcript during deliberations
    prejudiced the defendant. See United States v. Berry, 
    64 F.3d 305
    , 308 (7th Cir.
    1995).
    20                                                    No. 12-2472
    his trial, and this right may be violated if the jury gets access to
    extra-record evidence … even if the access is not the result of
    any prosecutorial misconduct.’” Id. at 600 (quoting United
    States v. Sababu, 
    891 F.2d 1308
    , 1333 (7th Cir. 1989)). But here,
    unlike in Berry, the transcripts provided to the jury were
    admitted into evidence at trial by stipulation. See Tr. 67, 88.
    And our standard of review is at the opposite edge of the
    spectrum in this case—in Berry our highly deferential review
    (abuse of discretion) favored the defendant’s position, whereas
    here our even more highly deferential review (plain error)
    favors the government’s position. Moreover, unlike in Berry,
    the government’s case is very strong—composed as it is from
    the testimony of five of Cheek’s co-conspirators and Detective
    Ferguson as well as recordings of Cheek’s communications and
    interactions with one of his customers. Therefore, we conclude
    that the district court did not plainly err—or at least that any
    error would be harmless—when the court permitted Agent
    Catey’s testimony and allowed the jury to have the transcripts
    containing Agent Catey’s interpretations in square brackets.
    B. Cheek’s Challenges to his Sentence
    Cheek argues that his 576-month prison sentence is
    procedurally unreasonable because the district court failed to
    comply with the procedure provided in § 851(b), erroneously
    invoked § 841(b)(1)(B), erroneously imposed the 2-level
    obstruction of justice enhancement, and failed to consider
    meaningfully Cheek’s mitigation arguments. Additionally,
    Cheek contends that a 576-month sentence is a de facto life
    sentence that is substantively unreasonable.
    No. 12-2472                                                    21
    Section 851(b)/Apprendi Arguments
    Cheek argues that his 576-month sentence must be vacated
    because the district court failed to comply with procedural
    requirements of 
    21 U.S.C. § 851
    (b) and because the sentence
    violates his rights under the Fifth and Sixth Amendments to
    the Constitution as interpreted by the Supreme Court in
    Apprendi.
    None of the counts for which Cheek was convicted carries
    a statutory maximum penalty greater than 480 months’
    imprisonment. However, pursuant to 
    21 U.S.C. § 841
    (b)(1)(B),
    the district court could sentence Cheek to a prison term of up
    to life on counts I and II provided that Cheek had been
    previously convicted of at least one drug felony. The district
    court only could invoke § 841(b)(1)(B) if the requirements of
    § 851 were met. Cheek contends that the district court failed to
    comply with § 851(b)’s requirement that the court “after
    conviction but before pronouncement of sentence inquire of
    the person with respect to whom the information was filed
    whether he affirms or denies that he has been previously
    convicted as alleged in the information.”
    Generally, “[w]hether the district court followed proper
    sentencing procedure is a legal question reviewed de novo.”
    United States v. Pape, 
    601 F.3d 743
    , 746 (7th Cir. 2010). However,
    the government urges us to review the district court’s compli-
    ance with § 851(b) for plain error because Cheek did not object
    to the criminal history section of his PSR and “did not object to
    the alleged procedural deficiency at the time of sentencing … .”
    United States v. Corona-Gonzalez, 
    628 F.3d 336
    , 340 (7th Cir.
    2010). But the standard of our review does not affect the
    22                                                   No. 12-2472
    outcome in this case. “No person who stands convicted of an
    offense under this part may challenge the validity of any prior
    conviction alleged under this section which occurred more
    than five years before the date of the information alleging such
    prior conviction.” 21 U.S.C § 851(e). And five of Cheek’s seven
    felony drug convictions listed in the § 851(a) information filed
    by the government prior to trial occurred more than five years
    before the date the information was filed. Thus, Cheek was
    barred from challenging the validity of any of these five prior
    felony drug convictions. Only one such conviction was needed
    to trigger § 841(b)(1)(B). “A district court is not required to
    ‘adhere to the rituals of § 851(b) where a defendant, as a matter
    of law, is precluded from attacking the conviction forming the
    basis of the enhancement information.’” United States v. Flores,
    
    5 F.3d 1070
    , 1082 (7th Cir. 1993) (quoting United States v. Nanez,
    
    694 F.2d 405
    , 413 (5th Cir. 1982)). So the district court did not
    err; but even if it did, any error was harmless. See United States
    v. Williams, 
    298 F.3d 688
    , 692–93 (7th Cir. 2002) (finding
    harmless any error resulting from the district court’s failure to
    comply with § 851(b)); United States v. Arango-Montoya, 
    61 F.3d 1331
    , 1339 (7th Cir. 1995) (per curiam) (“Since [the defendant]
    attempts to challenge his prior conviction and § 851(e) bars him
    from doing so, any failure by the district court to ‘inform him
    that any challenge to a prior conviction which is not made
    before sentence is imposed may not thereafter be raised to
    attack the sentence,’ 
    21 U.S.C. § 851
    (b), is harmless.”).
    Cheek also contends that his 576-month sentence violates
    his rights under the Fifth and Sixth Amendments as inter-
    preted by Apprendi. In Apprendi, the Supreme Court held that
    “any fact that increases the penalty for a crime beyond the
    No. 12-2472                                                    23
    prescribed statutory maximum must be submitted to a jury,
    and proved beyond a reasonable doubt.” 
    530 U.S. at 490
    . The
    question of whether Cheek had been convicted of any prior
    drug felonies is a factual prerequisite to the district court’s
    invocation of § 841(b)(1)(B) and imposition of a prison term
    greater than 480 months. It is undisputed that this question
    was not submitted to the jury.
    Cheek concedes that we review for plain error because he
    failed to raise any Apprendi argument before the district court.
    But we need not dally over the standard of our review because
    Apprendi expressly excludes any question of “the fact of a prior
    conviction” from the scope of its holding. Id. at 490. And even
    if we thought the Supreme Court was going to reconsider this
    ruling, it has “told the lower courts in no uncertain terms to
    leave the overruling of its precedents to it.” United States v.
    Ousley, 
    698 F.3d 972
    , 976 (7th Cir. 2012) (quoting United States
    v. Cephus, 
    684 F.3d 703
    , 709 (7th Cir. 2012)). To the extent Cheek
    wishes to preserve his Apprendi argument for the Supreme
    Court, he has done so.
    Obstruction of Justice Enhancement
    Next, Cheek contends that the district court improperly
    calculated his Guidelines range when it imposed a 2-level
    upward adjustment under U.S.S.G. § 3C1.1 for obstruction of
    justice. Guideline U.S.S.G. § 3C1.1 provides:
    If (1) the defendant willfully obstructed or impeded,
    or attempted to obstruct or impede, the administra-
    tion of justice with respect to the investigation,
    prosecution, or sentencing of the instant offense of
    conviction, and (2) the obstructive conduct related to
    24                                                    No. 12-2472
    (A) the defendant's offense of conviction and any
    relevant conduct; or (B) a closely related offense,
    increase the offense level by 2 levels.
    The district court thought that Cheek’s letter to Harris’s
    daughter was an attempt to convince “the child to get to her
    mother.” Thus, over Cheek’s objection, the district court
    concluded that the letter constituted an obstruction of justice.
    However, the district court remarked, “I don’t find [the letter]
    very significant.”
    “When reviewing an obstruction of justice enhancement,
    we review the underlying factual findings, like all such
    findings, for clear error, ‘and we review de novo whether those
    findings adequately support the enhancement.’” United States
    v. Taylor, 
    637 F.3d 812
    , 817 (7th Cir. 2011) (quoting United States
    v. Vallar, 
    635 F.3d 271
    , 288 (7th Cir. 2011)). Cheek contends that
    the district court erred in concluding that the letter was
    obstructive because the letter urges Harris to tell the truth and
    urges Harris’s daughter to respect her mother’s decision. But,
    in the letter, Cheek also states that Harris’s testimony for the
    government would be lies, that her testimony is all the govern-
    ment had to convict him, and that Harris had been tricked by
    her own lawyer. Cheek remarks that he will “never respect
    [Harris’s] decision” and that he thought she would never lie
    about him. Cheek also notes that if Cheek is convicted, then he
    will go to prison for the rest of his life and be unable to raise
    his children or protect his daughter from boys. In conjunction
    with this expression of parental concern, Cheek also makes a
    flattering reference to Harris’s daughter’s child. Finally, Cheek
    invokes “God” and remarks that “it’s up to us to man up or
    woman up.” In short, Cheek’s letter was an intentional effort
    No. 12-2472                                                     25
    to convince Harris’s daughter that her mother’s testimony
    would be lies, which were the only evidence the government
    had against him, and that a conviction would ruin his “life and
    the lives of [his] kids.” The district court reasonably interpreted
    this effort as a willful attempt to persuade Harris’s daughter to
    try to sway her mother’s testimony. Certainly this interpreta-
    tion was not clearly erroneous. And an effort to influence a
    witness’s testimony—albeit vicariously—is a prototypical
    example of obstruction of justice. See U.S.S.G. § 3C1.1 Applica-
    tion Note 4(A).
    Moreover, even if the district court erred when it imposed
    the obstruction of justice enhancement, that error would be
    harmless. Enhancements are “used merely to determine the
    applicable Guidelines range.” States v. Maggi, 
    44 F.3d 478
    , 482
    (7th Cir. 1995). And the imposition of the obstruction of justice
    enhancement did not change Cheek’s Guidelines range. In
    addition, the district court explicitly stated that he did not
    think the letter significant. Therefore, it is apparent that the
    enhancement did not affect Cheek’s sentence. See United States
    v. Eubanks, 
    593 F.3d 645
    , 655 (7th Cir. 2010) (“To prove harm-
    less error, the government must be able to show that the
    guidelines error did not affect the district court’s selection of
    the sentence imposed.” (quoting United States v. Abbas, 
    560 F.3d 660
    , 667 (7th Cir. 2009)).
    Cheek’s Arguments in Mitigation and the Section
    3553(a) Factors
    Cheek also contends that his sentence was procedurally
    unreasonable because the district court failed to consider that
    the sentence amounted to a de facto life sentence and did not
    26                                                  No. 12-2472
    explain why it believed a sentence greater than that recom-
    mended by the government was reasonable. Cheek relies upon
    our decision United States v. Patrick, 
    707 F.3d 815
    , 819–20 (7th
    Cir. 2013), wherein the district court expressed an intent not to
    impose a life sentence but then imposed a sentence that
    effectively amounted to a life sentence. Under those circum-
    stances, we were unable “to discern whether the court appreci-
    ated the severity of the sentence it imposed, and in particular
    its equivalence to the life sentence that it had purportedly
    rejected.” 
    Id.
     Patrick does not stand for the proposition that,
    every time a district court imposes a sentence that exceeds the
    defendant’s life expectancy, the court must explicitly recognize
    that fact. And Patrick is distinguishable from Cheek’s case
    because here the district court never stated that he wished to
    give Cheek something less than a life sentence. Instead, the
    district court explained that, based on Cheek’s extensive
    “history of criminal activity,” the court was untroubled by the
    fact that Cheek would be imprisoned “at least for a significant
    amount of time.” Unlike in Patrick, we are able “to discern
    [that] the court appreciated the severity of the sentence it
    imposed … .” 
    Id.
    In arguing that the district court procedurally erred by
    failing to explain why it believed a sentence greater than that
    recommended by the government was reasonable, Cheek
    asserts that the government requested a 480-month sentence.
    That is not quite true; the government asked for “a sentence of
    not less than 40 years [480 months] in prison … .” Moreover,
    Cheek’s sentence was within his Guidelines range, and “a
    within-guidelines sentence receives a presumption of reason-
    ableness … .” United States v. Diekemper, 
    604 F.3d 345
    , 355 (7th
    No. 12-2472                                                   27
    Cir. 2010). Where such a presumption applies, we doubt that
    a sentencing court has a procedural obligation to explain why
    it has chosen not to adopt the government’s recommended
    sentence. And, as discussed below, the district court had good
    reasons for concluding that Cheek deserved a long sentence.
    Cheek also argues that the district court failed to consider
    meaningfully the arguments Cheek offered in mitigation of his
    sentence under 
    18 U.S.C. § 3553
    (a). Cheek identifies the
    following factors as ones upon which he argued for leniency at
    sentencing: his age (37 years old), the extraordinary length of
    a Guidelines sentence of 360 months to life, his history of
    non-violence, his advanced age upon completing a lengthy
    sentence, that he had assisted law enforcement in an unrelated
    matter, that his mother had died when he was only 16 years
    old, and that he had children.
    First of all, although Cheek’s counsel remarked at sentenc-
    ing that Cheek “is 37 years old,” he did not develop any
    argument for leniency from that fact. And it is not apparent
    why Cheek’s age would support leniency. Cheek is not so
    young that one might attempt to excuse his criminal activity as
    the result of immaturity—nor is he elderly. Therefore, we will
    not fault the district court for failing to mention explicitly
    Cheek’s age during sentencing. See United States v. Jones, 438 F.
    App’x 515, 519 (7th Cir. 2011) (noting that the defendant
    “never explained why his age justified a below-guidelines
    sentence” and so the court was not required to address it).
    Similarly, our review of the sentencing transcript reveals no
    argument by either Cheek or his counsel that the “extraordi-
    nary length of a [Guidelines] sentence of 360 months to life”
    constitutes a basis for leniency.
    28                                                    No. 12-2472
    Furthermore, most of Cheek’s remaining
    arguments—namely, that he will be elderly when he is
    released from prison, that his mother died when he was only
    16 years old, and that he has children—are the kinds of stock
    arguments that sentencing courts are not obliged to address.
    See United States v. Brock, 
    433 F.3d 931
    , 937 (7th Cir. 2006)
    (ruling that a district court may reasonably find arguments
    about a difficult childhood so weak as not to merit discussion
    where the defendant fails to explain why his difficult child-
    hood should be a mitigating factor); United States v. Tahzib, 
    513 F.3d 692
    , 695 (7th Cir. 2008) (holding that “family ties” are
    “nothing more than stock arguments that sentencing courts see
    routinely”); United States v. Nurek, 
    578 F.3d 618
    , 626 (7th Cir.
    2009) (holding that defendant’s “physical ailments and
    [advanced] age are not significant mitigating factors” that the
    district court needed to separately address). Similarly, Cheek’s
    argument that none of his numerous prior convictions in-
    volved violence is essentially an argument that his criminal
    history category substantially over-represents the seriousness
    of his past crimes. See United States v. Stephen, 160 F. App’x 505,
    507 (7th Cir. 2005). This argument is also a stock argument that
    the district court was not required to address. United States v.
    Moreno-Padilla, 
    602 F.3d 802
    , 811–12 (7th Cir. 2010) (“To that
    end, there is no requirement that a district court extensively
    address non-principal arguments, or ‘stock arguments that
    sentencing courts see routinely,’ including ‘how [a defen-
    dant’s] criminal history category over-represents the serious-
    ness of his prior conviction.’” (quoting Tahzib, 
    513 F.3d at 695
    )).
    Cheek’s final argument for leniency was based on the fact
    that he had once assisted law enforcement by clearing Detec-
    No. 12-2472                                                     29
    tive Ferguson of accusations of misconduct. This was Cheek’s
    most developed argument at sentencing. But the fact that
    Cheek did not lie to the police on an unrelated matter hardly
    constitutes the kind of meritorious conduct deserving of a
    sentencing reduction. And, to the extent Cheek’s could be said
    to have rendered “substantial assistance” to the police, still “[a]
    defendant’s claim that substantial assistance to the government
    warrants leniency is ‘routine,’ … and thus a sentencing court
    may reject that claim with little or no explanation.” See Jones,
    438 F. App’x at 519 (citing United States v. Gonzalez, 
    462 F.3d 754
    , 756 (7th Cir. 2006)).
    Moreover, we will not find a sentence to be procedurally
    unreasonable as long as the totality of the record establishes
    that the district judge considered the arguments in mitigation,
    “even if implicitly and imprecisely.” Diekemper, 
    604 F.3d at 355
    ;
    United States v. Poetz, 
    582 F.3d 835
    , 839 (7th Cir. 2009). In this
    case, the district court recited the § 3553(a) factors and focused
    on Cheek’s extensive criminal history—Cheek spent his entire
    adult life as a drug dealer and was convicted of nine prior
    felony drug convictions. The district court recognized that
    Cheek had offered arguments that he was not a bad person.
    Indeed, the district court told Cheek, “I’m not saying you’re a
    bad person.” Nevertheless, despite recognizing the good things
    about Cheek, the district court concluded that the facts
    surrounding Cheek’s current offenses and his extensive history
    of criminal activity called for a significant prison sentence.
    Moreover, the district court’s decision to impose a sentencing
    enhancement on Cheek for obstructing justice demonstrates that
    the court implicitly rejected any argument that Cheek’s
    sentence should be reduced because he assisted justice. There-
    30                                                    No. 12-2472
    fore, even assuming the district court was required to address
    Cheek’s mitigation argument based on his prior assistance, we
    conclude that the court sufficiently considered it. In any event,
    even if the district court did not adequately consider this
    mitigation argument, the error would be harmless because the
    court’s focus on Cheek’s extensive and egregious history of
    criminal activity, and serious present offenses, convince us that
    Cheek’s sentence would not have been different. United States
    v. Glosser, 
    623 F.3d 413
    , 419 (7th Cir. 2010) (“When we are
    convinced the sentence would have been the same absent the
    error, we deem the error harmless.”).
    Substantive Unreasonableness
    Finally, Cheek argues that his sentence—a de facto life
    sentence—is substantively unreasonably long. But Cheek’s
    sentence was within his Guidelines range, and “a
    within-guidelines sentence receives a presumption of reason-
    ableness … .” Diekemper, 
    604 F.3d at 355
    . Indeed, “such a
    sentence ‘will almost never be unreasonable.’” United States v.
    Vallar, 
    635 F.3d 271
    , 279 (7th Cir. 2011) (quoting Tahzib, 
    513 F.3d at 695
    ). In fact, the district court could have imposed a life
    sentence on Cheek and still remained within his Guidelines
    range. The district court recounted the § 3553(a) factors and
    concluded that, despite the significant cost of incarceration, a
    within-Guidelines sentence was appropriate in light of Cheek’s
    egregious criminal history, including nine prior felony drug
    convictions, and serious present offenses, including distribut-
    ing at least 28 grams of crack cocaine and 100 kilograms of
    marijuana. We previously have found lengthy sentences to be
    substantively reasonable under similar circumstances. See, e.g.,
    United States v. Taylor, 
    701 F.3d 1166
    , 1175 (7th Cir. 2012)
    No. 12-2472                                                      31
    (affirming 480-month sentence in light of egregious criminal
    conduct and extensive criminal history); Vallar, 
    635 F.3d at 280
    (affirming 360-month sentence in light of “the seriousness of
    [the defendant’s] crime, his past recidivism and the likelihood
    that he would continue to commit crimes if released from
    prison, the fact that he directed the operation of a drug
    distribution ring while in a federal prison, his lack of remorse
    for his offense, and its conclusion that [he] is a threat to society
    due to his persistent distribution of drugs.”). The record
    demonstrates that Cheek has repeatedly refused to give up his
    life of criminal drug distribution—despite the efforts of the
    justice system to deter him. Cheek’s sentence is lengthy, but we
    cannot say that the district court abused its discretion in
    concluding that Cheek deserved it.
    III. Conclusion
    The district court did not plainly err when it admitted
    Agent Catey’s testimony and permitted the government to
    provide the jury with transcripts containing Agent Catey’s
    interpretations of various words and phrases from the record-
    ings. At least, any error would have been harmless. Addition-
    ally, the district court did not err when it imposed a 2-level
    obstruction of justice enhancement, and the court adequately
    considered Cheek’s mitigation arguments in light of the § 3553
    factors. The district court’s failure to comply with the proce-
    dure provided in § 851(b) was, at most, harmless
    error—especially given that Cheek’s counsel never raised the
    issue. Finally, Cheek’s 576-month prison sentence—authorized
    by § 841(b)(1)(B)—is not substantively unreasonable. There-
    fore, we AFFIRM Cheek’s convictions and sentence.