United States v. Blair Cook , 914 F.3d 545 ( 2019 )


Menu:
  •                                In the
    United States Court of Appeals
    For the Seventh Circuit
    No. 18-1343
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    v.
    BLAIR COOK,
    Defendant-Appellant.
    Appeal from the United States District Court for the
    Western District of Wisconsin.
    No. 3:17-cr-00048-001 — James D. Peterson, Chief Judge.
    ARGUED SEPTEMBER 13, 2018 — DECIDED JANUARY 28, 2019
    Before FLAUM, MANION, and ROVNER, Circuit Judges.
    ROVNER, Circuit Judge. A jury convicted Blair Cook of being
    an unlawful user of a controlled substance (marijuana) in
    possession of a firearm. See 
    18 U.S.C. § 922
    (g)(3). Cook appeals
    his conviction, contending that the statute underlying his
    conviction is facially vague, that it improperly limits his
    Second Amendment right to possess a firearm, and that the
    2                                                       No. 18-1343
    district court did not properly instruct the jury as to who
    constitutes an unlawful user of a controlled substance. We
    affirm Cook’s conviction.
    I.
    On May 25, 2017, officers of the Madison, Wisconsin police
    department conducted a traffic stop of the car that Cook was
    driving. When officers approached the car and spoke with
    Cook, they noticed a strong odor of marijuana emanating from
    the car. Apart from the possibility that Cook was driving under
    the influence of marijuana, Cook was also driving on a
    suspended license and without a license plate on the front of
    his vehicle, so the officers decided to detain him and ordered
    him to step out of the vehicle. Officer Matthew Wentzel
    removed a loaded, .40-caliber Glock Model 23 pistol from a
    holster under Cook’s shoulder. The gun had an extended 22-
    round capacity magazine with 19 bullets remaining. Cook was
    transported to the police station for further questioning.
    During a recorded interview at the station, Cook acknowl-
    edged to Wentzel that he had used marijuana almost daily for
    nearly ten years (since the age of 14), that he did so because
    marijuana calmed him down, and that he had smoked two
    “blunts” earlier that day.1 On prodding from the police, Cook
    ultimately produced a small packet from his groin area
    containing a half ounce of marijuana.
    Cook had purchased the firearm from Max Creek Outdoors
    in Oregon, Wisconsin on April 2, 2017. At the time of the
    1
    “Blunt” is a street term for a cigar from which the tobacco has been
    removed and replaced with marijuana.
    No. 18-1343                                                   3
    purchase, he was required to complete a Firearms Transaction
    Record Form 4473 promulgated by the Bureau of Alcohol,
    Tobacco, Firearms, and Explosives (“ATF”). On that form,
    Cook answered “No” to the question, “Are you an unlawful
    user of, or addicted to, marijuana or any depressant, stimulant,
    narcotic drug, or any other controlled substance?” Directly
    under that question the reader of the form was admonished,
    “Warning: The use or possession of marijuana remains
    unlawful under Federal law regardless of whether it has been
    legalized or decriminalized for medical or recreational pur-
    poses in the state where you reside.”
    A grand jury subsequently charged Cook with two of-
    fenses: possession of a firearm and ammunition by an “unlaw-
    ful user” of marijuana, in violation of section 922(g)(3), and
    making a false statement (that he was not an unlawful user of
    marijuana) on the ATF form in connection with his purchase of
    a firearm and ammunition, in violation of 
    18 U.S.C. § 924
    (a)(1)(A).
    Cook moved to dismiss both counts of the indictment on
    the ground that the term “unlawful user” of a controlled
    substance found in sections 922(g)(3) and 924(a)(1)(A) is
    unconstitutionally vague. The district court denied the motion.
    R. 21 at 2–3.
    The district court subsequently gave the following instruc-
    tion to the jury as to who constitutes an “unlawful user” of
    marijuana:
    The defendant was an unlawful user of mari-
    juana if he used marijuana on a regular and
    ongoing basis for a period of time that began
    4                                                     No. 18-1343
    before and continued through the date of the
    charged offense. The government is not required
    to prove that the defendant was under the
    influence of marijuana when he filled out the
    Firearms Transaction Record or when he pos-
    sessed the firearm. The government is not re-
    quired to prove that the defendant used mari-
    juana on any particular day, or within a certain
    number of days of when he committed the
    charged offenses.
    R. 44 at 8; R. 56 at 70–71 (emphasis in original). The defense
    rejected the government’s offer to include an additional
    sentence in this instruction advising the jury that a one-time
    use of marijuana is insufficient to render the defendant an
    “unlawful user” within the meaning of either statute. R. 87 at
    17.
    Following a one-day trial, a jury convicted Cook on the
    section 922(g)(3) charge but was unable to reach a verdict on
    the section 924 charge, which the district court dismissed
    without prejudice, R. 53. The district court denied Cook’s Rule
    33 motions for a new trial (R. 73) and ordered Cook to serve a
    four-year term of probation in lieu of any term of imprison-
    ment (R. 76).
    II.
    Section 922(g)(3) provides in relevant part that “[i]t shall be
    unlawful for any person … who is an unlawful user of or
    addicted to any controlled substance (as defined in section 102
    of the Controlled Substances Act (
    21 U.S.C. § 802
    )) … to …
    possess in or affecting commerce, any firearm or ammunition
    No. 18-1343                                                        5
    … .” Marijuana is a Schedule I controlled substance, see 
    21 U.S.C. § 812
    (c)(10), and because the Glock pistol Cook pur-
    chased had previously traveled in interstate commerce (it was
    manufactured in Smyrna, Georgia), section 922(g)(3) forbade
    Cook’s possession of the gun at the time of the May 2017 traffic
    stop provided he qualified as an “unlawful user” of marijuana,
    which the jury necessarily found that he did.
    Cook challenges his conviction pursuant to this statute on
    three grounds: (1) the statute is facially vague as to who
    constitutes an “unlawful user” of a controlled substance; (2)
    the statute violates his Second Amendment right to possess a
    firearm; and (3) the jury instruction defining “unlawful user”
    was inadequate. For the reasons that follow, we find none of
    these arguments to be persuasive.
    A. Facial vagueness challenge to section 922(g)(3).
    Cook contends that section 922(g)(3) is vague on its face,
    such that his conviction violates the Fifth Amendment’s due
    process clause. The void-for-vagueness doctrine requires that
    a criminal statute define an offense with sufficient clarity that
    an ordinary person has fair notice of what conduct is prohib-
    ited and so as to avoid arbitrary and discriminatory enforce-
    ment. See, e.g., Skilling v. United States, 
    561 U.S. 358
    , 402–03, 
    130 S. Ct. 2896
    , 2927–28 (2010); United States v. Sylla, 
    790 F.3d 772
    ,
    774–75 (7th Cir. 2015). “What renders a statute vague is not the
    possibility that it will sometimes be difficult to determine
    whether the incriminating fact it establishes has been proved;
    but rather the indeterminacy of precisely what that fact is.”
    United States v. Williams, 
    553 U.S. 285
    , 306, 
    128 S. Ct. 1830
    , 1846
    (2008).
    6                                                             No. 18-1343
    The general practice, outside of the First Amendment
    context,2 has been to consider the purported vagueness of a
    statute in light of the facts of the particular case—i.e., as
    applied—rather than in the abstract. See, e.g., Maynard v.
    Cartwright, 
    486 U.S. 356
    , 361, 
    108 S. Ct. 1853
    , 1857–58 (1988);
    United States v. Johnson, 
    875 F.3d 360
    , 370 (7th Cir. 2017). This
    means, of course, that a litigant challenging the statute ordi-
    narily must show that it is vague as applied to him; and if the
    statute undoubtedly applies to his conduct, he will not be
    heard to argue that the statute is vague as to one or more
    hypothetical scenarios. See Holder v. Humanitarian Law Project,
    
    561 U.S. 1
    , 18–19, 
    130 S. Ct. 2705
    , 2718–19 (2010) (quoting
    Village of Hoffman Estates v. Flipside Hoffman Estates, Inc., 
    455 U.S. 489
    , 495, 
    102 S. Ct. 1186
    , 1191 (1982)); Broadrick v. Okla-
    homa, supra n.2., 413 U.S. at 610, 93 S. Ct. at 2915 (collecting
    cases).
    Nonetheless, the Supreme Court has on a number of
    occasions entertained facial challenges to criminal statutes that
    do not implicate First Amendment concerns. See, e.g., Skilling,
    
    561 U.S. at
    402–14, 130 S. Ct. at 2927–33 (honest services fraud);
    City of Chicago v. Morales, 
    527 U.S. 41
    , 52–64, 
    119 S. Ct. 1849
    ,
    1857–63 (1999) (loitering by gang members in public spaces);
    Lanzetta v. New Jersey, 
    306 U.S. 451
    , 453–58, 
    59 S. Ct. 618
    , 619–21
    (1939) (gang participation); United States v. L. Cohen Grocery Co.,
    
    255 U.S. 81
    , 89–93, 
    41 S. Ct. 298
    , 300–01 (1921) (price gouging).
    As we noted in United States v. Jones, 
    689 F.3d 696
     (7th Cir.
    2
    When a statute implicates activities protected by the First Amendment,
    there is a special concern that free speech and expression not be chilled. See
    Broadrick v. Oklahoma, 
    413 U.S. 601
    , 611–12, 
    93 S. Ct. 2908
    , 2915–16 (1973).
    No. 18-1343                                                        7
    2012), abrogated on other grounds by Johnson v. United States, 
    135 S. Ct. 2551
     (2015), the common thread uniting these cases with
    facial challenges in the First Amendment context appears to be
    a concern (or at least a colorable contention) that the chal-
    lenged statute “simply has no core” and lacks “any ascertain-
    able standard for inclusion and exclusion, ”id. at 703 (quoting
    Smith v. Goguen, 
    415 U.S. 566
    , 578, 
    94 S. Ct. 1242
    , 1249 (1974)).
    Such a standardless statute poses a trap for the person acting
    in good faith, who is given no guidepost by which he can
    divine what sort of conduct is prohibited. See Colautti v.
    Franklin, 
    439 U.S. 379
    , 395, 
    99 S. Ct. 675
    , 685 (1979), overruled in
    part on other grounds, Webster v. Reproductive Health Servs., 
    492 U.S. 490
    , 
    109 S. Ct. 3040
     (1989). The concern is heightened
    when the statute contains no mens rea requirement, Colautti,
    
    439 U.S. at 395
    , 
    99 S. Ct. at
    685–86, and the uncertainty as to
    exactly what is proscribed “threatens to inhibit the exercise of
    constitutionally protected rights,” 
    id. at 391
    , 
    99 S. Ct. at 683
    . See
    also Morales, 
    527 U.S. at 55
    , 
    119 S. Ct. at 1858
    .
    The statutory prohibition at issue here does not present
    such concerns. True enough, section 922(g)(3) does implicate
    Cook’s Second Amendment right to possess a gun. But the
    prohibition is not a strict liability offense requiring no mens rea,
    as in Colautti. By virtue of the separate penalties provision
    found in 
    18 U.S.C. § 924
    (a)(2), a violation of section 922(g)(3)
    must be knowing – that is, the defendant must have knowl-
    edge of the facts that constitute the offense. See Holder, 
    561 U.S. at 21
    , 130 S. Ct. at 2720 (“the knowledge requirement of the
    statute further reduces any potential for vagueness, as we have
    held with respect to other statutes containing a similar require-
    ment”) (collecting cases); United States v. Johnson, 
    911 F.3d 849
    ,
    8                                                     No. 18-1343
    853 (7th Cir. 2018) (word “knowingly” cures any potential
    vagueness in challenged condition of supervised release)
    (citing Screws v. United States, 
    325 U.S. 91
    , 102, 
    65 S. Ct. 1031
    ,
    1036 (1945)). More importantly, there is, as our decision in
    United States v. Yancey, 
    621 F.3d 681
     (7th Cir. 2010) (per curiam)
    makes clear, a readily appreciable core of conduct prohibited
    by the statute.
    Yancey construes the term “unlawful user,” as used in
    section 922(g)(3), to mean one who regularly or habitually
    ingests controlled substances in a manner other than as
    prescribed by a physician. 
    Id. at 682
    . Our opinion adds that
    such use must be contemporaneous with the defendant’s
    possession of a gun. 
    Id. at 687
     (collecting cases); see also United
    States v. Grap, 
    403 F.3d 439
    , 446 (7th Cir. 2005) (adopting same
    contemporaneity requirement for purposes of U.S.S.G.
    § 2K2.1(a)(6), which specifies the base offense level for
    “prohibited person” convicted of firearms offense) (collecting
    cases). We rendered this interpretation of section 922(g)(3) in
    the course of rejecting a Second Amendment challenge to the
    statute. Noting the well-established link between chronic drug
    use and violence, we concluded that section 922(g)(3)’s ban on
    gun possession by those who regularly engage in illegal drug
    use was substantially related to the important government
    interest in preventing violent crime. 
    621 F.3d at
    686–87. We
    must take into account Yancey’s gloss on the statute in evaluat-
    ing Cook’s vagueness claim. See Skilling, 
    561 U.S. at 405
    , 130
    S. Ct. at 2929 (“It has long been our practice, … before striking
    a federal statute as vague, to consider whether the prescription
    is amenable to a limiting construction.”); Pleasureland Museum,
    No. 18-1343                                                      9
    Inc. v. Beutter, 
    288 F.3d 988
    , 995–96 (7th Cir. 2002); Waldron v.
    McAtee, 
    723 F.2d 1348
    , 1354 (7th Cir. 1983).
    Cook is thus not in a position to claim that the statute is so
    indefinite as to inhibit the legitimate exercise of Second
    Amendment rights. Whatever doubt there might be at the
    margins as to conduct potentially reached by section 922(g)(3),
    there can be no doubt as to the core of conduct that the statute
    (as construed by Yancey) proscribes: the possession of a firearm
    by an individual engaged in the regular, non-prescribed use of
    a controlled substance. Indeed, it would appear that Cook’s
    conduct—possession of a firearm in the midst of a nearly ten-
    year period of daily marijuana use—epitomizes that core,
    which may explain why Cook is so keen to challenge the
    statute on its face rather than as applied.
    Cook nonetheless suggests that the Supreme Court’s recent
    decision in Johnson authorizes his facial vagueness challenge,
    regardless of whether the statute is vague as applied to his
    particular conduct. Johnson declared the (now defunct) residual
    clause of the Armed Career Criminal Act (“ACCA”) to be
    impermissibly vague without requiring the defendant to first
    show that the clause was vague as applied to him. 
    135 S. Ct. at 2563
    . The ACCA specifies an enhanced sentence of 15 years to
    life for one convicted of a firearms offense if the defendant has
    three or more prior convictions for either a “serious drug
    offense” or a “violent felony.” 
    18 U.S.C. § 924
    (e)(1). As relevant
    here, the statute defines “violent felony” to mean a crime
    punishable by a year or more in prison which “is burglary,
    arson, or extortion, involves use of explosives, or otherwise
    involves conduct that presents a serious potential risk of physical
    injury to another[.]” § 924(e)(2)(B)(ii) (emphasis ours). The Court
    10                                                    No. 18-1343
    previously had construed section 924(e)(2)(B)(ii) generally to
    require a sentencing court to employ a categorical approach
    focusing on the generic version of an offense (that is, what the
    elements of the offense required), rather than the defendant’s
    actual conduct, in deciding whether his prior conviction
    qualified as a violent felony. See Taylor v. United States, 
    495 U.S. 575
    , 602, 
    110 S. Ct. 2143
    , 2160 (1990). In view of the categorical
    inquiry mandated by Taylor, two aspects of the residual clause
    we have italicized led the Supreme Court in Johnson to con-
    clude that this clause was impermissibly vague: (1) after
    postulating the archetypal version of the crime, one had to
    decide how much risk of physical injury was posed by that
    idealized version of the offense; and (2) one also had to
    consider how much risk of injury was required to render an
    offense violent as compared with the offenses expressly
    identified in the statute (burglary, arson, extortion, and
    offenses involving the use of explosives). 
    135 S. Ct. at
    2557–58.
    Both inquiries were plagued by uncertainty, as evidenced by
    both the Court’s own demonstrated inability in a series of prior
    residual clause cases to articulate a “principled and objective
    standard” for identifying crimes that present a serious risk of
    physical injury, 
    id. at 2558
    , as well as the “numerous splits
    among the lower federal courts,” where the clause had proved
    “nearly impossible to apply consistently,” 
    id. at 2560
     (quoting
    Chambers v. United States, 
    555 U.S. 122
    , 133, 
    129 S. Ct. 687
    , 694
    (2009) (Alito, J., concurring in judgment)). “Nine years’
    experience trying to derive meaning from the residual clause
    convinces us that we have embarked upon a failed enterprise,”
    the Court concluded. “Each of the uncertainties in the residual
    clause may be tolerable in isolation, but ‘their sum makes a
    No. 18-1343                                                    11
    task for us which at best could be only guesswork.’” 
    Id.
    (quoting United States v. Evans, 
    333 U.S. 483
    , 495, 
    68 S. Ct. 634
    ,
    641 (1948)).
    In declaring the residual clause to violate the due process
    clause, the Court expressly rejected the government’s conten-
    tion that an otherwise vague statute is constitutional so long as
    “there is some conduct that clearly falls within the provision’s
    grasp.” Id. at 2561. While acknowledging that statements in
    some of its opinions could be read to support such a rule, the
    Court emphasized that its prior holdings squarely contradicted
    such a practice. Id. at 2560–61. Simply because it is possible to
    envision some factual scenarios that would violate an
    ambiguously-worded statute is not enough to rescue that
    statute from a vagueness challenge, the Court made clear. Id.
    at 2561.
    The Court was also at pains to emphasize, however, that
    simply because a criminal statute uses qualitative language to
    articulate a liability standard does not mean that the statute is
    impermissibly vague, especially when the statute under
    scrutiny calls upon the court to apply that standard to a
    concrete set of facts. Id. at 2561; see also id. at 2558.
    As a general matter, we do not doubt the consti-
    tutionality of laws that call for the application of
    a qualitative standard such as “substantial risk”
    to real-world conduct; “the law is full of in-
    stances where a man’s fate depends on his
    estimating rightly … some matter of degree,”
    Nash v. United States, 
    229 U.S. 373
    , 377, 
    33 S. Ct. 780
     (1913). The residual clause, however, re-
    12                                                                No. 18-1343
    quires application of the “serious potential risk”
    standard to an idealized ordinary case of the
    crime. Because “the elements necessary to
    determine the imaginary ideal are uncertain
    both in nature and degree of effect,” this abstract
    inquiry offers significantly less predictability
    than one “[t]hat deals with the actual, not with
    an imaginary condition other than the facts.”
    International Harvester Co. of America v. Kentucky,
    
    234 U.S. 216
    , 223, 
    34 S. Ct. 853
     (1914).
    
    135 S. Ct. at 2561
    .
    It is not clear how much Johnson—and the Court’s follow-on
    decision last term in Sessions v. Dimaya, 
    138 S. Ct. 1204
     (2018),
    which invalidated similar language in the Immigration and
    Nationality Act—actually expand the universe of litigants who
    may mount a facial challenge to a statute they believe is vague.
    Not surprisingly, Cook contends that Johnson permits any
    defendant who can postulate doubts as to what particular
    conduct a criminal statute does or does not reach to pursue a
    facial challenge to that statute, without having to show that
    there is any real question as to whether his own conduct is
    proscribed. It is true that Johnson puts to rest the notion—found
    in any number of pre-Johnson cases3—that a litigant must show
    3
    See, e.g., United States v. Salerno, 
    481 U.S. 739
    , 745, 
    107 S. Ct. 2095
    , 2100
    (1987) (“A facial challenge to a legislative Act is, of course, the most difficult
    challenge to mount successfully, since the challenger must establish that no
    set of circumstances exists under which the Act would be valid.”); Johnson,
    
    135 S. Ct. at 2574, 2581
     (Alito, J., dissenting); Hegwood v. City of Eau Claire,
    (continued...)
    No. 18-1343                                                                 13
    that the statute in question is vague in all of its applications in
    order to successfully mount a facial challenge. 
    135 S. Ct. at 2561
    . And, as we have mentioned, Johnson likewise rejects the
    notion that simply because one can point to some conduct that
    the statute undoubtedly would reach is alone sufficient to save
    it from a vagueness challenge. 
    Id.
     So Cook has those aspects of
    Johnson going for him. But so much of the Court’s analysis in
    Johnson deals with a statute that is in key respects sui generis. In
    particular, it was the categorical approach called for by the
    ACCA’s residual clause—requiring courts to look not at the
    actual conduct underlying the defendant’s prior conviction but
    rather at the archetypal version of the offense and then to
    consider whether the risk of injury posed by that version was
    sufficient to render the crime violent—which the court found
    to be particularly vexing. 
    Id.
     at 2557–58. Assessing the degree
    of risk posed by an idealized “typical” version of an offense
    was significantly different, as the Court emphasized, from
    looking at the risks posed by a set of actual, concrete facts. 
    Id. at 2558
    ; see also Dimaya, 
    138 S. Ct. at
    1214–16.
    Cook’s appeal, by contrast, presents a much more routine
    vagueness challenge that highlights some imprecision in the
    statutory language and posits uncertainty as to whether the
    statute might apply to certain hypothetical facts. But section
    922(g)(3) does not call for the court to engage in any abstract
    analysis; it calls on the court to apply the statutory prohibition
    3
    (...continued)
    
    676 F.3d 600
    , 604 (7th Cir. 2012); Sherman ex rel. Sherman v. Koch, 
    623 F.3d 501
    , 520 (7th Cir. 2010); Schor v. City of Chicago, 
    576 F.3d 775
    , 781 (7th Cir.
    2009).
    14                                                                 No. 18-1343
    to a defendant’s real-world conduct. See United States v.
    Douglas, 
    907 F.3d 1
    , 11, 14 (1st Cir. 2018), pet’n for cert. filed, No.
    18-7331 (U.S. Jan. 7, 2019); Ovalles v. United States, 
    905 F.3d 1231
    , 1233–34, 1252 (11th Cir. 2018) (en banc); United States v.
    Barrett, 
    903 F.3d 166
    , 178–79, 182 (2d Cir. 2018), pet’n for cert.
    filed, No. 18-6985 (U.S. Dec. 3, 2018); United States v. Larson,
    — F. App’x —, 
    2018 WL 4203470
    , at *2 (4th Cir. Sept. 4, 2018)
    (per curiam) (unpublished). Moreover, there is, as we have
    discussed, a readily appreciable core of conduct that the statute
    reaches: If one regularly uses marijuana or another controlled
    substance other than as directed by a physician, he may not
    possess a firearm so long as the use persists. Consequently,
    citizens who wish to exercise their Second Amendment rights
    and law enforcement officials alike have reasonable notice of
    what is prohibited. This is not a “hopelessly indeterminate”
    statute that leaves everyone to guess what conduct is legal and
    what conduct is proscribed.4 The statute, as construed by
    4
    We recognize that a liability standard turning on the regularity of a
    particular activity can in some instances present a vagueness problem. See
    Whatley v. Zatecky, 
    833 F.3d 762
     (7th Cir. 2016) (finding impermissibly vague
    statute specifying enhanced sentence for individual possessing controlled
    substance within 1000 feet of “youth program center,” defined as any
    building that provides youth-oriented programs or services “ on a regular
    basis”). In contrast to Whatley, the statute at issue here is not a strict-liability
    provision, and one’s liability under section 922(g)(3) turns on the regularity
    of one’s own conduct rather than the activity occurring in a building that
    may exhibit no indicia of what programs and services are provided therein
    and how often. One who uses a controlled substance necessarily knows
    how often he does so. And whatever doubt there might be as to when one’s
    drug use becomes regular, Cook as a daily user of marijuana over the
    (continued...)
    No. 18-1343                                                                 15
    Yancey, does incorporate a qualitative liability standard, and
    one can posit, as Cook does, hypothetical scenarios which
    present close questions as to whether an individual’s use of a
    controlled substance is unlawful, whether it qualifies as
    regular and ongoing, and/or whether that use is sufficiently
    contemporaneous with his or her possession of a firearm. But
    in contrast with the residual clause, there is no judicial history
    of courts struggling to appreciate what particular conduct
    Congress meant to reach with section 922(g)(3) or to apply the
    statutory terms to varying sets of facts. The uniform rejection
    of as-applied vagueness challenges to section 922(g)(3) by itself
    suggests that it is not anything like the sort of problematic
    statute the Court confronted in Johnson. See United States v.
    Bramer, 
    832 F.3d 908
    , 909–10 (8th Cir. 2016) (per curiam); United
    States v. Edwards, 
    540 F.3d 1156
    , 1162 (10th Cir. 2008); United
    States v. Patterson, 
    431 F.3d 832
    , 836 (5th Cir. 2005); United States
    v. Purdy, supra n.4, 264 F.3d at 812. And simply because it may
    sometimes be difficult to determine if an individual’s drug use
    meets section 922(g)(3)’s standard for liability does not signify
    that the statute is impermissibly vague, given that there is no
    doubt as to the essence of what the statute forbids: the posses-
    sion of a firearm by one who is engaged in the regular and
    ongoing use of a controlled substance other than as prescribed
    4
    (...continued)
    course of a decade cannot reasonably claim to have been in doubt as to
    whether his use qualified as regular. See United States v. Purdy, 
    264 F.3d 809
    ,
    812 (9th Cir. 2001) (“Purdy’s [regular, years-long] drug use … was sufficient
    to put him on notice that he fell within the statutory definition of ‘unlawful
    [drug] user.’”).
    16                                                    No. 18-1343
    by a doctor. See Williams, 
    supra,
     
    553 U.S. at 306
    , 
    128 S. Ct. at 1846
    .
    For these reasons, we are not convinced that Cook is
    entitled to mount a facial vagueness challenge to section
    922(g)(3). Johnson did not alter the general rule that a defendant
    whose conduct is clearly prohibited by a statute cannot be the
    one to make a facial vagueness challenge. United States v.
    Westbrooks, 
    858 F.3d 317
    , 325–26 (5th Cir. 2017) (collecting
    cases), cert. granted & judgment vacated on other grounds, 
    138 S. Ct. 1323
     (2018). Cook’s conduct, if anything, undoubtedly
    falls within the obvious core of conduct proscribed by the
    statute. Per his statement at the police station, he had been
    using marijuana daily for almost ten years and he had smoked
    two blunts on the day of his arrest; and the police officers who
    stopped his vehicle and took him into custody noted a strong
    odor of marijuana emanating from the interior and that Cook
    himself reeked of the substance. These facts no doubt explain
    why Cook has declined to pursue an as-applied vagueness
    challenge to section 922(g)(3): it would surely fail. See United
    States v. Jackson, 
    280 F.3d 403
    , 406 (4th Cir. 2002) (addressing
    facts nearly identical to those presented here) (“While we do
    not doubt that the exact reach of the statute is not easy to
    define, we agree with the government that this is not a border-
    line case. … Given the evidence, Jackson violated the plain
    meaning of the statute.”).
    Cook’s attempt to challenge section 922(g)(3) as facially
    vague fails for all of the reasons we have discussed, and
    because he asserts no as-applied challenge to the statute, we
    reject his contention that the statute is inconsistent with his due
    process rights.
    No. 18-1343                                                  17
    B. Second Amendment
    Cook agrees that Yancey forecloses this challenge to section
    922(g)(3). Yancey, as noted, held that there was a substantial
    relationship between the government’s legitimate interest in
    preventing violent crime and the statute’s ban on gun posses-
    sion by unlawful drug users. 
    621 F.3d at
    683–87. Although
    Cook asserts that Yancey was wrongly decided, he offers us no
    real reason to reconsider our precedent on this point. As the
    law is settled in this circuit, we reject his Second Amendment
    objection to the statute.
    C. Jury Instruction
    Cook argues finally that the district court did not properly
    instruct the jury as to the elements of his offense. As we noted
    in our summary of the proceedings below, the court advised
    the jury that “[t]he defendant was an unlawful user of mari-
    juana if he used marijuana on a regular and ongoing basis for
    a period of time that began before and continued through the
    date of the offense.” R. 44 at 8; R. 56 at 70–71 (emphasis
    omitted). The court added that Cook need not have been under
    the influence of marijuana when he possessed a firearm, nor
    was the government required to prove that he used marijuana
    on any particular date or within a specified number of days of
    the offense. (Recall that Cook had rejected the government’s
    offer to add language that use of marijuana on a single occa-
    sion was insufficient to establish unlawful drug use.) Cook
    contends that the instruction as given was erroneous because
    (a) it was not grounded in the language of section 922(g)(3);
    (b) it was not consistent with Yancey’s holding as to who
    constitutes an unlawful drug user; (c) the instruction was
    18                                                   No. 18-1343
    internally inconsistent; and (d) it foreclosed the defense from
    urging the jurors to use their own understanding of “unlawful
    user” in assessing Cook’s conduct. None of these arguments is
    persuasive.
    The instruction was grounded in the language of the statute
    in that it endeavored, consistent with the case law regarding
    section 922(g)(3), to define for the jury who constitutes an
    unlawful drug user. The statute itself does not define “unlaw-
    ful drug user.” As discussed, this court in Yancey concluded
    that an unlawful drug user is one who regularly uses a
    controlled substance, other than as prescribed by a physician,
    contemporaneously with possessing a firearm. 
    621 F.3d at 682, 687
    . In doing so, we acted in accord with other circuits which
    have concluded that the statute’s reach is limited by two key
    requirements: (1) regularity of drug use (2) that is sufficiently
    contemporaneous with the possession of a firearm. See 
    id.
    (collecting cases). That these are limits imposed on the offense
    by the judiciary rather than the face of the statute does not
    render them invalid. See United States v. Lanier, 
    520 U.S. 259
    ,
    266, 
    117 S. Ct. 1219
    , 1225 (1997) (“clarity at the requisite level
    may be supplied by judicial gloss on an otherwise uncertain
    statute”) (collecting cases); Skilling, 
    supra,
     561 U.S. at 405–06,
    130 S. Ct. at 2929–30 (before striking down a federal statute as
    vague courts will first consider if it is subject to a limiting
    construction that avoids vagueness); id. at 409 n.43, 130 S. Ct.
    at 2931 n.43 (“cases ‘paring down’ federal statutes to avoid
    constitutional shoals are legion”). The district court appropri-
    ately looked to Yancey’s gloss on the statute in defining
    “unlawful drug user” for the jury.
    No. 18-1343                                                     19
    Nor was the instruction inconsistent with Yancey. Cook
    suggests that Yancey defined “unlawful user” of drugs to mean
    either one who is addicted to controlled substances or one who
    has simply used them within the past year, and that the
    reference to “regular and ongoing” drug use in the district
    court’s instruction is both broader than addiction and narrower
    than use within the past year. But Cook’s reading of Yancey is
    not a faithful reading of the court’s opinion. The opinion makes
    clear that section 922(g)(3) requires regular or habitual drug use,
    
    621 F.3d at 682
    , that is contemporaneous with the possession
    of a firearm, 
    id. at 687
    . Nowhere in our decision did we suggest
    that a single or occasional, irregular use of a controlled
    substance within a year of the gun possession was sufficient to
    meet these criteria. Nor did we indicate that regular or habitual
    use necessarily equates with addiction. The instruction given
    here was fully consistent with Yancey’s requirements: the term
    “regular” connotes a pattern of repeated drug use (be it
    volitional or as the result of an addiction), and “ongoing”
    connotes the requisite temporal nexus with possession of the
    gun.
    The instruction was also internally consistent. Cook’s
    contention to the contrary focuses on the fact that the instruc-
    tion advised the jury, on the one hand, that his marijuana use
    must have “beg[u]n before and continued through the date of
    the charged offense” but, on the other hand, that he need not
    have “used marijuana on any particular day, or within a
    certain number of days of when he committed the charged
    offense.” These portions of the instruction were not at odds
    with one another. Consistent with Yancey’s requirement that
    the defendant’s drug use be contemporaneous with his
    20                                                 No. 18-1343
    possession of a firearm, the court appropriately advised the
    jury that Cook’s marijuana use must have been “ongoing” at
    the time he was discovered in possession of a gun. But the
    requirement that the drug use and firearm possession be
    contemporaneous does not literally mean that the defendant
    must have been ingesting (or under the influence of) a con-
    trolled substance at the same time as he possessed the gun. The
    statute, after all, prohibits firearm possession by a drug user,
    not simply possession during drug use. So long as the defen-
    dant was still engaged in the regular use of a drug at the time
    of his firearm possession, it is not necessary to show that he
    used the drug on the day of his firearm possession, the day
    before, or within any particular number of days of the posses-
    sion. Thus, a person who routinely uses marijuana on week-
    ends may violate section 922(g)(3) by possessing a firearm on
    a Tuesday or Wednesday, because his possession of the gun is
    contemporaneous with his ongoing pattern of drug use. The
    instruction appropriately and coherently advised the jury on
    these points.
    Finally, we are no more persuaded than the district judge
    was that the instruction should have left it to the jurors to
    consult their own collective sense of who constitutes an
    “unlawful user” of marijuana. Yancey establishes the relevant
    parameters on this point, and the district court was required to
    convey those parameters to the jury to guide its decisionmak-
    ing, which Judge Peterson did admirably.
    That said, our holding should not be construed to foreclose
    alternate versions of the “unlawful user” instruction. The Sixth
    and Eighth Circuits, for example, have promulgated instruc-
    tions with slightly different language. See MANUAL OF MODEL
    No. 18-1343                                                    21
    CRIMINAL JURY INSTRUCTIONS FOR THE DISTRICT COURTS OF THE
    EIGHTH CIRCUIT § 6.18.922B, at 291–94 (2017); United States v.
    Burchard, 
    580 F.3d 341
    , 352 (6th Cir. 2009). Although the
    arguments in this court and in the court below reflect some
    anticipation that we might settle upon our own preferred
    version of the instruction in this appeal, we respectfully decline
    to do so. As the foregoing discussion makes clear, we find no
    fault with the particular instruction that Judge Peterson gave
    to the jury, and we need not go farther than that to resolve
    Cook’s appeal. The task of drafting a model instruction, we
    believe, is better left to our Circuit’s Pattern Criminal Jury
    Instruction Committee, which has a membership that includes
    practitioners as well as judges and which can solicit and
    incorporate comments on any proposed instruction from the
    bar at large. We shall invite the Committee to consider a
    pattern instruction for a section 922(g)(3) charge, including but
    not limited to the issue of who constitutes an “unlawful user”
    of a controlled substance for purposes of this statute.
    III.
    For all of the foregoing reasons, we AFFIRM Cook’s
    conviction. We commend everyone involved in the briefing
    and arguing of this case, along with Judge Peterson and
    Magistrate Judge Crocker for their thorough and careful
    handling of the case below. Their dedication and hard work
    have greatly aided this court’s deliberation and resolution of
    the appeal.