People of Michigan v. Robert Tuttle , 498 Mich. 192 ( 2015 )


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  •                                                                                        Michigan Supreme Court
    Lansing, Michigan
    Chief Justice:         Justices:
    Syllabus                                                        Robert P. Young, Jr.   Stephen J. Markman
    Mary Beth Kelly
    Brian K. Zahra
    Bridget M. McCormack
    David F. Viviano
    Richard H. Bernstein
    This syllabus constitutes no part of the opinion of the Court but has been             Reporter of Decisions:
    prepared by the Reporter of Decisions for the convenience of the reader.               Corbin R. Davis
    PEOPLE v HARTWICK
    PEOPLE v TUTTLE
    Docket Nos. 148444 and 148971. Argued January 15, 2015 (Calendar Nos. 5 and 6). Decided
    July 27, 2015.
    Richard Lee Hartwick was charged in the Oakland Circuit Court with manufacturing
    marijuana and possessing it with the intent to deliver it. Hartwick was a registered qualifying
    patient under the Michigan Medical Marihuana Act (MMMA). He served as his own primary
    caregiver and the primary caregiver for five other registered qualifying patients to whom he was
    properly connected under the MMMA. The police, acting on a tip, confronted Hartwick and
    later conducted a consent search of his home where the police discovered a disputed number of
    marijuana plants and approximately 3.69 ounces of marijuana. Hartwick moved to dismiss the
    charges, claiming immunity under § 4 of the MMMA, MCL 333.26424, and the affirmative
    defense under § 8 of the MMMA, MCL 333.26428. In the alternative, Hartwick sought
    permission to present a § 8 defense at trial. The trial court, Colleen A. O’Brien, J., denied the
    motions. The Court of Appeals denied Hartwick’s delayed application for leave to appeal. The
    Supreme Court, in lieu of granting leave to appeal, remanded the case to the Court of Appeals for
    consideration as on leave granted. 
    493 Mich. 950
    (2013). The Court of Appeals, SAAD, P.J., and
    SAWYER, J. (JANSEN, J., concurring), affirmed the trial court. 
    303 Mich. App. 247
    (2013). The
    Supreme Court granted leave to appeal in Docket No. 148444. 
    496 Mich. 851
    (2014).
    Robert Tuttle was charged in the Oakland Circuit Court with three counts of delivering
    marijuana, one count of manufacturing marijuana, one count of possessing marijuana with the
    intent to deliver it, and two counts of possession of a firearm during the commission of a felony.
    Tuttle was a registered qualifying patient under the MMMA who served as his own primary
    caregiver. It was unclear whether he was properly connected as the primary caregiver to one or
    two other registered qualifying patients. Tuttle was arrested for selling marijuana on three
    occasions to an individual with whom Tuttle was not properly connected under the MMMA.
    Tuttle claimed immunity under § 4 and the affirmative defense under § 8 of the MMMA. The
    trial court, Michael D. Warren, Jr., J., rejected both claims and denied Tuttle’s request to present
    a § 8 defense at trial. According to the court, immunity was not appropriate because Tuttle’s
    illegal conduct—selling marijuana to an individual outside the protection of the MMMA—
    tainted Tuttle’s conduct with regard to the other charges. The trial court denied Tuttle use of the
    affirmative defense in § 8 because Tuttle failed to present prima facie evidence of each element
    of the defense. The Court of Appeals denied Tuttle’s application for leave to appeal. In lieu of
    granting Tuttle’s application for leave to appeal, the Supreme Court remanded the case to the
    Court of Appeals for consideration as on leave granted. 
    493 Mich. 950
    (2013). The Court of
    Appeals, SAAD, P.J., and SAWYER, J. (JANSEN, J., concurring), affirmed the trial court. 304 Mich
    App 72 (2014). The Supreme Court granted leave to appeal in Docket No. 148971. 
    496 Mich. 851
    .
    In a unanimous opinion by Justice ZAHRA, the Supreme Court held:
    The availability of immunity under § 4 of the MMMA is a question of law to be decided
    before trial, and a defendant has the burden of proving by a preponderance of the evidence his or
    her entitlement to immunity. Immunity must be claimed for each charged offense, and the
    burden of proving immunity is separate and distinct for each offense. Conduct that is
    noncompliant with the MMMA with respect to one charged offense does not automatically rebut
    the presumption of medical use with respect to conduct relating to any other charged offenses.
    Rather, noncompliant conduct involved in one charged offense can negate otherwise compliant
    conduct involved in a separate charged offense if there is a nexus between the noncompliant and
    the otherwise compliant conduct. Raising an affirmative defense under § 8 of the MMMA
    requires a caregiver to present prima facie evidence of each element of the defense for him- or
    herself and for each registered qualifying patient to which the caregiver is connected. Having
    established a prima facie case, the defendant has the burden of proving each element by a
    preponderance of the evidence. A valid registry identification card does not create any
    presumption for purposes of § 8.
    1. The lower courts erred by denying Hartwick § 4 immunity without properly making
    the factual determinations required by § 4. The Court of Appeals failed to recognize that the trial
    court did not make proper factual determinations on the elements of § 4, specifically, the number
    of plants Hartwick possessed. In addition, the trial court and the Court of Appeals erred by
    concluding that Hartwick should have known his registered qualifying patients’ debilitating
    conditions, the amount of marijuana they needed, and the identities of their physicians. Section 4
    does not require that knowledge. To establish immunity under § 4 of the MMMA, the defendant
    must prove four elements by a preponderance of the evidence: (1) the defendant possessed a
    valid registry identification card; (2) the defendant complied with the requisite volume
    limitations in § 4(a) and § 4(b); (3) the defendant kept any marijuana plants in an enclosed,
    locked facility; and (4) the defendant was engaged in the medical use of marijuana. Under the
    MMMA, a defendant is presumed to be engaged in the medical use of marijuana if the defendant
    possesses a valid registry identification card and is not in violation of the volume limitations.
    The presumption is rebuttable by evidence that a defendant’s conduct was not for the purpose of
    alleviating a qualifying patient’s debilitating medical condition or its symptoms. If a
    presumption of medical use has been rebutted, the defendant may still prove by a preponderance
    of the evidence that the defendant’s conduct was in furtherance of the administration of
    marijuana to treat or alleviate a registered qualifying patient’s debilitating medical condition or
    symptoms associated with the debilitating medical condition under MCL 333.26423(f). The
    written certification necessary to obtain a registry identification card is not similar to a
    pharmaceutical prescription and satisfies none of the elements of a § 8 defense. People v
    Hartwick had to be remanded to the trial court for an evidentiary hearing to determine the
    number of plants in Hartwick’s possession and whether Hartwick was entitled to § 4 immunity.
    2. The Court of Appeals properly held that Hartwick was not entitled to raise the
    affirmative defense under § 8 because he failed to present prima facie evidence of each element
    of the defense. A primary caregiver must provide prima facie evidence of all § 8(a) elements for
    him- or herself and for the registered qualifying patients to which he or she is connected under
    the MMMA. Specifically, Hartwick failed to provide evidence of a bona fide physician-patient
    relationship for himself, as a patient, and his connected patients, he failed to provide evidence
    that a physician conducted a full assessment of his and his patients’ medical histories and current
    medical conditions, and he failed to show that a physician determined that he and his patients
    had debilitating medical conditions that would likely benefit from the medical use of marijuana.
    Hartwick further failed to present prima facie evidence that the amount of marijuana he
    possessed was not more than was reasonably necessary to ensure its uninterrupted availability for
    the treatment of his and his patients’ debilitating medical conditions. Finally, Hartwick failed to
    present prima facie evidence that he and his patients were engaged in the use of marijuana for a
    medical purpose.
    3. The Court of Appeals erred by concluding that Tuttle’s unprotected conduct with the
    unconnected individual tainted what might otherwise be protected conduct on which additional
    separate charges were based. A defendant must raise the claim of § 4 immunity to each charged
    offense, the trial court must decide as a matter of law before trial whether to grant the
    defendant’s motion for immunity, and the defendant must prove immunity by a preponderance of
    the evidence each time immunity is raised. The defendant’s burden of proving entitlement to
    immunity is separate and distinct for each charged offense. MMMA-compliant conduct is not
    automatically tainted by the defendant’s improper conduct related to a different charged offense
    unless there is a nexus between the improper conduct and the otherwise proper conduct. People
    v Tuttle had to be remanded to the trial court for an evidentiary hearing to determine whether
    there was a nexus between the charges based on Tuttle’s improper conduct and the charges based
    on Tuttle’s otherwise proper conduct, in addition to other factual findings.
    4. The Court of Appeals properly held that Tuttle could not claim the affirmative defense
    under § 8 because he failed to establish prima facie evidence of at least one of the elements of
    the defense for each of his possibly connected patients. Specifically, Tuttle failed to provide
    evidence of the actual amount of marijuana needed to treat his patients; the evidence showed
    only the actual amount of marijuana each patient obtained from Tuttle. In addition, Tuttle failed
    to show that one patient had undergone a full medical assessment in the course of a bona fide
    physician-patient relationship.
    Hartwick affirmed in part, reversed in part, and remanded to the trial court for an
    evidentiary hearing to determine Hartwick’s entitlement to § 4 immunity.
    Tuttle affirmed in part, reversed in part, and remanded to the trial court for an evidentiary
    hearing to determine Tuttle’s entitlement to § 4 immunity.
    ©2015 State of Michigan
    Michigan Supreme Court
    Lansing, Michigan
    Chief Justice:         Justices:
    OPINION                                  Robert P. Young, Jr. Stephen J. Markman
    Mary Beth Kelly
    Brian K. Zahra
    Bridget M. McCormack
    David F. Viviano
    Richard H. Bernstein
    FILED July 27, 2015
    STATE OF MICHIGAN
    SUPREME COURT
    PEOPLE OF THE STATE OF MICHIGAN,
    Plaintiff-Appellee,
    v                                    No. 148444
    RICHARD LEE HARTWICK,
    Defendant-Appellant.
    PEOPLE OF THE STATE OF MICHIGAN,
    Plaintiff-Appellee,
    v                                    No. 148971
    ROBERT TUTTLE,
    Defendant-Appellant.
    BEFORE THE ENTIRE BENCH
    ZAHRA, J.
    In 2008, the voters of Michigan passed into law a ballot initiative 1 now codified as
    the Michigan Medical Marihuana 2 Act (MMMA), MCL 333.26421 et seq. Unlike the
    procedures for the editing and drafting of bills proposed through the Legislature, the
    electorate—those who enacted this law at the ballot box—need not review the proposed
    law for content, meaning, readability, or consistency. 3
    1
    Under Article 2, § 9 of the 1963 Michigan Constitution, “[t]he people reserve to
    themselves the power to propose laws and to enact and reject laws, called the
    initiative . . . .” A voter initiative may be invoked by a relatively small number of
    registered voters. “To invoke the initiative . . . , petitions signed by a number of
    registered electors, not less than eight percent . . . of the total vote cast for all candidates
    for governor at the last preceding general election at which a governor was elected shall
    be required.” Const 1963, art 2, § 9.
    2
    The MMMA uses the variant “marihuana.” Throughout this opinion, we use the
    vernacular “marijuana” unless quoting from the statute.
    3
    Members of the Legislature generally request that the Legislative Council, a bipartisan,
    bicameral body of legislators established in Article 4, § 15 of the 1963 Constitution of
    Michigan, see that bills to be proposed in their respective chambers are drafted. See
    Const 1963, art 4, § 15; MCL 4.1103; MCL 4.1105. The council oversees the Legislative
    Service Bureau. MCL 4.1105. The bureau has a director and staff, and maintains a
    legislative reference library containing material which may be of use in connection with
    drafting and editing proposed legislation. MCL 4.1106; MCL 4.1107. At the request of
    the members of the Legislature, the bureau drafts “bills and resolutions or amendments
    to, or substitutes for, bills and resolutions; draft[s] conference committee reports; and
    examine[s], check[s], and compare[s] pending bills with other pending bills and existing
    laws to avoid so far as possible contrary or conflicting provisions.” MCL 4.1108(a). In
    sum, the Legislature has a staff of experienced attorneys who work with the various
    legislators to develop and revise any manner of laws. After a bill is drafted and
    supported, the chambers of the Legislature may refer it to conference committees for
    additional review by legislators and the public. The Governor also has an opportunity to
    review bills before signing them into law. This extensive drafting process works to
    clarify language, limit confusion and mistakes, and in a general sense, ensure that enacted
    laws have a modicum of readability and consistency.
    2
    This lack of scrutiny in the lawmaking process is significant because initiatives
    such as the MMMA cannot be modified “except by a[nother] vote of the electors” or by a
    three-fourths vote of each chamber of the Legislature. 4 This constraint on Legislative
    power suggests that there can be matters of public policy so important to the people that
    they cannot be left in the hands of the elected legislators. But this constitutionally
    protected reservation of power by the people comes with a cost. The lack of procedural
    scrutiny in the initiative process leaves the process susceptible to the creation of
    inconsistent or unclear laws that may be difficult to interpret and harmonize.        The
    MMMA is such a law. While the MMMA has been the law in Michigan for just under
    seven years, this Court has been called on to give meaning to the MMMA in nine
    different cases. 5 The many inconsistencies in the law have caused confusion for medical
    marijuana caregivers and patients, law enforcement, attorneys, and judges, and have
    consumed valuable public and private resources to interpret and apply it. This confusion
    mainly stems from the immunity, MCL 333.26424 (§ 4), and the affirmative defense,
    MCL 333.26428 (§ 8), provisions of the MMMA.             We granted leave in People v
    4
    See Const 1963, art 2, § 9.
    5
    The Court previously interpreted the MMMA in the following cases: People v Mazur,
    497 Mich ___; 854 NW2d 719 (2015); Ter Beek v City of Wyoming, 
    495 Mich. 1
    ; 846
    NW2d 531 (2014); People v Green, 
    494 Mich. 865
    (2013); People v Koon, 
    494 Mich. 1
    ;
    832 NW2d 724 (2013); State v McQueen, 
    493 Mich. 135
    ; 828 NW2d 644 (2013); People
    v Bylsma, 
    493 Mich. 17
    ; 825 NW2d 543 (2012); People v Kolanek, 
    491 Mich. 382
    ; 817
    NW2d 528 (2012). This term, the Court granted leave in People v Hartwick, 
    496 Mich. 851
    (2014), and People v Tuttle, 
    496 Mich. 851
    (2014).
    3
    Hartwick 6 and People v Tuttle 7 to once again consider the meaning and application of
    these two very important sections of the MMMA. 8
    6
    In Hartwick, we directed the parties to address the following questions:
    (1) whether a defendant’s entitlement to immunity under § 4 of the
    Michigan Medical Marihuana Act (MMMA), MCL 333.26421 et seq., is a
    question of law for the trial court to decide; (2) whether factual disputes
    regarding § 4 immunity are to be resolved by the trial court; (3) if so,
    whether the trial court’s finding of fact becomes an established fact that
    cannot be appealed; (4) whether a defendant’s possession of a valid registry
    identification card establishes any presumption for purposes of § 4 or § 8;
    (5) if not, what is a defendant’s evidentiary burden to establish immunity
    under § 4 or an affirmative defense under § 8; (6) what role, if any, do the
    verification and confidentiality provisions in § 6 of the act play in
    establishing entitlement to immunity under § 4 or an affirmative defense
    under § 8; and (7) whether the Court of Appeals erred in characterizing a
    qualifying patient’s physician as issuing a prescription for, or prescribing,
    marijuana. 
    [Hartwick, 496 Mich. at 851
    .]
    7
    In Tuttle, we directed the parties to address the following questions:
    (1) whether a registered qualifying patient under the Michigan
    Medical Marihuana Act (MMMA), MCL 333.26421 et seq., who makes
    unlawful sales of marijuana to another patient to whom he is not connected
    through the registration process, taints all aspects of his marijuana-related
    conduct, even that which is otherwise permitted under the act; (2) whether a
    defendant’s possession of a valid registry identification card establishes any
    presumption for purposes of § 4 or § 8; (3) if not, what is a defendant’s
    evidentiary burden to establish immunity under § 4 or an affirmative
    defense under § 8; and (4) what role, if any, do the verification and
    confidentiality provisions in § 6 of the act play in establishing entitlement
    to immunity under § 4 or an affirmative defense under § 8. 
    [Tuttle, 496 Mich. at 851-852
    .]
    8
    The same panel of the Court of Appeals presided over People v Hartwick and People v
    Tuttle.
    4
    For the reasons fully explained in this opinion regarding § 4, we hold:
    (1) entitlement to § 4 immunity is a question of law to be decided by
    the trial court before trial;
    (2) the trial court must resolve factual disputes relating to § 4
    immunity, and such factual findings are reviewed on appeal for clear error;
    (3) the trial court’s legal determinations under the MMMA are
    reviewed de novo on appeal;
    (4) a defendant may claim immunity under § 4 for each charged
    offense if the defendant shows by a preponderance of the evidence that, at
    the time of the charged offense, the defendant
    (i) possessed a valid registry identification card,
    (ii) complied with the requisite volume limitations of § 4(a)
    and § 4(b),
    (iii) stored any marijuana plants in an enclosed, locked
    facility, and
    (iv) was engaged in the medical use of marijuana;
    (5) the burden of proving § 4 immunity is separate and distinct for
    each charged offense;
    (6) a marijuana transaction by a registered qualifying patient or a
    registered primary caregiver that is not in conformity with the MMMA
    does not per se taint all aspects of the registered qualifying patient’s or
    registered primary caregiver’s marijuana-related conduct;
    (7) a defendant is entitled to a presumption under § 4(d) that he or
    she was engaged in the medical use of marijuana if the defendant has
    shown by a preponderance of the evidence that, at the time of the charged
    offense, the defendant
    (i) possessed a valid registry identification card, and
    5
    (ii) complied with the requisite volume limitations of § 4(a)
    and § 4(b); 9
    (8) the prosecution may rebut the § 4(d) presumption that the
    defendant was engaged in the medical use of marijuana by presenting
    evidence that the defendant’s conduct was not for the purpose of alleviating
    the registered qualifying patient’s debilitating medical condition;
    (9) non-MMMA-compliant conduct may rebut the § 4(d)
    presumption of medical use for otherwise MMMA-compliant conduct if a
    nexus exists between the non-MMMA-compliant conduct and the otherwise
    MMMA-compliant conduct;
    (10) if the prosecution rebuts the § 4(d) presumption of the medical
    use of marijuana, the defendant may still establish, on a charge-by-charge
    basis, that the conduct underlying a particular charge was for the medical
    use of marijuana; and
    (11) the trial court must ultimately weigh the evidence to determine
    if the defendant has met the requisite burden of proof as to all elements of
    § 4 immunity.
    Regarding § 8, we hold:
    (1) a defendant must present prima facie evidence of each element of
    § 8(a) in order to be entitled to present a § 8 affirmative defense to a fact-
    finder;
    (2) if the defendant meets this burden, then the defendant must prove
    each element of § 8(a) by a preponderance of the evidence; and
    (3) a valid registry identification card does not establish any
    presumption under § 8. 10
    9
    A valid registry identification card is a prerequisite to establish immunity under § 4.
    But possession of a valid registry identification card, alone, does not establish any
    presumption for the purpose of § 4. Further, the verification and confidentiality
    provisions in § 6(c) and § 6(h) do not establish that a defendant has engaged in the
    medical use of marijuana, or complied with the requisite volume and storage limitations
    of § 4.
    10
    A valid registry identification card is prima facie evidence that a physician has
    determined the registered qualifying patient has a debilitating medical condition and will
    6
    For the reasons stated in this opinion, and in accordance with the conclusions of
    law described above, we affirm in part, and reverse in part, the November 19, 2013
    judgment of the Court of Appeals in People v Hartwick. 11 We further remand Hartwick
    to the trial court for an evidentiary hearing regarding Hartwick’s entitlement to immunity
    under § 4. In People v Tuttle, we affirm in part, and reverse in part, the January 30, 2014
    judgment of the Court of Appeals. 12 We also remand Tuttle to the trial court for an
    evidentiary hearing regarding Tuttle’s entitlement to immunity under § 4.
    I. STATEMENT OF FACTS
    A. PEOPLE V HARTWICK
    In late 2011, police officers in Oakland County received a tip regarding a
    marijuana growing operation at Hartwick’s home. Law enforcement officers confronted
    Hartwick, who admitted growing marijuana, but stated he was in compliance with the
    MMMA. After consenting to a search of his home, Hartwick led the police officers to a
    likely benefit from the medical use of marijuana to treat the debilitating medical
    condition. In addition, a valid registry identification card issued after April 1, 2013, the
    effective date of 
    2012 PA 512
    , is also prima facie evidence that a physician has
    conducted a full, in-person assessment of the registered qualifying patient. We reach this
    conclusion because § 6(c) requires the state to verify all the information contained in an
    application for a registry identification card; therefore, a valid registry identification card
    is prima facie evidence of anything contained in the application. This prima facie
    evidence satisfies two elements of § 8(a)(1), but does not satisfy the last element
    requiring prima facie evidence of a bona fide physician-patient relationship.
    11
    People v Hartwick, 
    303 Mich. App. 247
    ; 842 NW2d 545 (2013).
    12
    People v Tuttle, 
    304 Mich. App. 72
    ; 850 NW2d 484 (2014).
    7
    bedroom containing dozens of marijuana plants in varying sizes. 13 The police officers
    also found a total of 104.6 grams—approximately 3.69 ounces—of usable marijuana in
    the home.
    The Oakland County Prosecutor charged Hartwick with manufacturing 20 to 200
    marijuana plants and possession with intent to deliver marijuana. Hartwick moved to
    dismiss those charges based on both the immunity (§ 4) and the affirmative defense (§ 8)
    provided in the MMMA. The trial court held an evidentiary hearing at which Hartwick
    was the only witness. Hartwick testified that he was a medical marijuana patient and his
    own caregiver, 14 and a connected 15 primary caregiver to five registered qualifying
    patients. He submitted into evidence the registry identification cards for himself and the
    13
    Hartwick alleges 71 plants were found, while the police allege he possessed 77 plants.
    
    Hartwick, 303 Mich. App. at 253-254
    , 259-260. Additionally, while this issue was not
    appealed, we note that Hartwick testified the door to the bedroom was locked before he
    unlocked it for the police, while the police allege it was unlocked when they arrived.
    14
    We do not use the terms “patient” and “caregiver” in the traditional sense associated
    with a patient/medical provider relationship. Rather, we use these terms because they are
    used in the MMMA. Under the MMMA, a medical marijuana user, or “patient,” may
    elect to either manufacture marijuana for personal medical use or have someone else
    manufacture and supply marijuana to him or her. Such a supplier is known under the
    MMMA as a “primary caregiver.” We refer to the qualifying patient as being his or her
    “own caregiver” when the patient has not designated a primary caregiver. We use the
    terms “patient” and “caregiver” throughout this opinion simply to track the language of
    the MMMA and not to suggest that someone asserting a defense or immunity under the
    MMMA is a “patient” or “caregiver” as those terms are generally understood. Whether
    one is a “patient” or “caregiver” under the MMMA, as opposed to a supplier or user of
    illegal marijuana, is a question to be resolved on a case-by-case basis.
    15
    When a qualifying patient elects a primary caregiver, a registry identification card is
    also issued to the primary caregiver. When a qualifying patient has properly designated a
    primary caregiver under the MMMA, the primary caregiver is said to be “connected” to
    that particular qualifying patient.
    8
    five connected qualifying patients.       Hartwick could not identify the debilitating
    conditions suffered by two of the qualifying patients statutorily connected to him.
    Further, Hartwick could not identify the certifying physician for any of the five connected
    qualifying patients.
    The trial court concluded that Hartwick was not entitled to § 4 immunity. The
    court reasoned that Hartwick did not comply with the requirements of the MMMA
    because he did not know if the patients connected to him even had debilitating medical
    conditions. 16
    The trial court similarly denied Hartwick’s motion to dismiss under § 8 and his
    motion in the alternative to present a § 8 affirmative defense to the jury. The court
    determined that Hartwick failed to present “testimony regarding a ‘bona fide physician-
    patient relationship or a likelihood of receiving therapeutic or palliative benefit from the
    medical use of marijuana,’ or any testimony on whether defendant possessed no more
    marijuana than reasonably necessary for medical use.” 17        Thus, Hartwick failed to
    establish his entitlement to a § 8 affirmative defense.
    The Court of Appeals affirmed the trial court, rejecting Hartwick’s contention
    “that his possession of a registry identification card automatically immunizes him from
    prosecution under § 4 and grants him a complete defense under § 8.” 18 The Court of
    16
    An individual claiming § 4 immunity must comply with the requirement that marijuana
    be only for a medical use.
    17
    
    Hartwick, 303 Mich. App. at 255
    .
    18
    
    Id. at 251.
    9
    Appeals focused on the “primary purpose” of the MMMA, “which is to ensure that any
    marijuana production and use permitted by the statute is medical in nature and only for
    treating a patient’s debilitating medical condition.” 19
    B. PEOPLE V TUTTLE
    Tuttle was a registered qualifying patient and his own caregiver. He was also
    connected as a registered primary caregiver to at least one other registered qualifying
    patient. 20 On three separate occasions in early 2012, Tuttle sold marijuana to William
    Lalonde even though Tuttle was not formally connected to Lalonde under the MMMA.
    In addition to arresting Tuttle for providing marijuana to Lalonde, the Oakland County
    Sheriff’s Office searched Tuttle’s home where they found 33 marijuana plants, 38 grams
    of marijuana (approximately 1.34 ounces), and several weapons locked in a gun safe.
    Tuttle was subsequently charged with multiple counts related to the possession, delivery,
    and manufacture of marijuana, as well as possession of a firearm during the commission
    of a felony. 21
    19
    
    Id. 20 At
    all relevant times, Tuttle was connected as a registered primary caregiver for
    Michael Batke. Additionally, Tuttle was at some point connected as a primary caregiver
    to Frank Colon. It is unclear whether Colon remained connected to Tuttle at the time of
    Tuttle’s offenses in this case. Colon may have renewed his MMMA card and listed
    himself as his own caregiver. Notwithstanding this possible inconsistency, Colon
    testified in the lower court that Tuttle supplied him with marijuana for his personal
    medical use. See pages 11and 12 of this opinion.
    21
    Counts I-III relate to Tuttle’s provision of marijuana to Lalonde. Counts IV-VII relate
    to the marijuana found in Tuttle’s home.
    10
    Tuttle attempted to invoke the immunity provided under § 4 for counts IV-VII
    relating to possession of the marijuana in his home. Tuttle argued that he possessed a
    valid registry identification card and complied with the volume and storage limitations of
    § 4(a) and § 4(b). The prosecution argued that Tuttle did not comply with the
    requirements of § 4 because Tuttle provided marijuana to Lalonde outside the parameters
    of the MMMA. According to the prosecution, these transactions (for which Tuttle was
    charged in counts I-III) tainted all of Tuttle’s marijuana-related activity. The trial court
    agreed and denied Tuttle’s motion under § 4 for immunity and dismissal of the charges.
    Tuttle then raised the § 8 affirmative defense to counts I-III. At an evidentiary
    hearing, Tuttle presented his registry identification card and the registry identification
    cards belonging to two allegedly connected qualifying patients: Michael Batke and Frank
    Colon. Lalonde, Batke, and Colon testified at the hearing.
    Lalonde testified that he was a registered qualifying patient who met Tuttle
    through an internet site that purported to match medical marijuana patients with
    caregivers. Lalonde also testified that he told Tuttle he used marijuana to treat chronic
    pain. Batke testified that he was a registered qualifying patient and that Tuttle was
    properly connected to him under the MMMA as a registered primary caregiver. Batke
    also testified that he would call Tuttle every time he needed marijuana, and Tuttle
    provided Batke with approximately two ounces of marijuana a month. Lastly, Colon
    testified that he was a medical marijuana patient, that he had a debilitating medical
    11
    condition, 22 and that he utilized Tuttle as a primary caregiver. Colon stated he requested
    between one and two ounces of marijuana a week from Tuttle.
    After the evidentiary hearing, the trial court determined that Tuttle did not present
    prima facie evidence for each element of § 8(a). Specifically, the trial court determined
    that Tuttle failed to present any evidence that the medical marijuana users to whom Tuttle
    was connected had physicians who “completed a full assessment of each patient’s
    medical history and current medical condition” as required by § 8(a)(1). 23 The court also
    concluded that Tuttle failed to establish a question of fact regarding whether the quantity
    of marijuana he possessed was reasonable under § 8(a)(2). 24 The Court of Appeals
    affirmed the trial court and additionally concluded that Tuttle had not presented prima
    facie evidence as to Tuttle’s own medical use of marijuana under § 8(a)(3).
    Regarding § 4 immunity, the Court of Appeals concluded that providing marijuana
    to Lalonde tainted all of Tuttle’s marijuana-related conduct thereby negating Tuttle’s
    ability to invoke § 4 immunity for any charge.          Regarding the affirmative defense
    available under § 8, the Court of Appeals concluded that Tuttle’s registry identification
    card did not establish prima facie evidence of the required elements of § 8. The court
    22
    The physician’s statement indicates that Colon’s debilitating medical condition was
    shoulder and lower back pain.
    23
    
    Tuttle, 304 Mich. App. at 79
    .
    24
    The trial court did find the testimony of Lalonde, Batke, and Colon credible as to their
    need for the medical use of marijuana to treat a debilitating medical condition under
    § 8(a)(3).
    12
    also concluded that the testimony of Tuttle’s patients was equally deficient in presenting
    prima facie evidence of those elements.
    II. ANALYSIS
    The possession, manufacture, and delivery of marijuana are punishable criminal
    offenses under Michigan law. 25       Under the MMMA, though, “[t]he medical use of
    marihuana is allowed under state law to the extent that it is carried out in accordance with
    the provisions of th[e] act.” 26 The MMMA grants to persons in compliance with its
    provisions either immunity from, or an affirmative defense to, those marijuana-related
    violations of state law. In the cases before us, we must resolve questions surrounding the
    § 4 grant of immunity and the § 8 affirmative defense.
    A. STANDARD OF REVIEW
    We review questions of statutory interpretation de novo. 27 The MMMA was
    passed into law by initiative. We must therefore determine the intent of the electorate in
    approving the MMMA, rather than the intent of the Legislature. 28 Our interpretation is
    ultimately drawn from the plain language of the statute, which provides “the most reliable
    evidence” of the electors’ intent. 29     But as with other initiatives, we place “special
    25
    See 
    Kolanek, 491 Mich. at 394
    n 24.
    26
    MCL 333.26427(a).
    27
    
    Kolanek, 491 Mich. at 393
    .
    28
    
    McQueen, 493 Mich. at 147
    (“ ‘[T]he intent of the electors governs’ the interpretation
    of voter-initiated statutes, just as the intent of the Legislature governs the interpretation of
    legislatively enacted statutes.”) (citation omitted).
    29
    
    Id. 13 emphasis
    on the duty of judicial restraint.” 30 Particularly, we make no judgment as to the
    wisdom of the medical use of marijuana in Michigan. This state’s electors have made
    that determination for us. To that end, we do not attempt to limit or extend the statute’s
    words. We merely bring them meaning derived from the plain language of the statute.
    B. SECTION 4 IMMUNITY
    Section 4 grants broad immunity from criminal prosecution and civil penalties to
    “qualifying patient[s]” 31 and “primary caregiver[s].” 32 Subsection (a) specifically grants
    immunity to qualifying patients and states in relevant part:
    (a) A qualifying patient who has been issued and possesses a registry
    identification card[33] shall not be subject to arrest, prosecution, or penalty
    in any manner . . . for the medical use[34] of marihuana in accordance with
    30
    Schmidt v Dep’t of Ed, 
    441 Mich. 236
    , 241-242; 490 NW2d 584 (1992).
    31
    The MMMA defines “qualifying patient” or “patient” as “a person who has been
    diagnosed by a physician as having a debilitating medical condition.”     MCL
    333.26423(i).
    32
    The MMMA defines “primary caregiver” or “caregiver” as “a person who is at least 21
    years old and who has agreed to assist with a patient’s medical use of marihuana and who
    has not been convicted of any felony within the past 10 years and has never been
    convicted of a felony involving illegal drugs or a felony that is an assaultive crime . . . .”
    MCL 333.26423(h).
    33
    The MMMA defines “registry identification card” as “a document issued by the
    department that identifies a person as a registered qualifying patient or registered primary
    caregiver.” MCL 333.26423(j). The “department” is the “department of licensing and
    regulatory affairs.” MCL 333.26423(c).
    34
    “Medical use” is defined as “the acquisition, possession, cultivation, manufacture, use,
    internal possession, delivery, transfer, or transportation of marihuana or paraphernalia
    relating to the administration of marihuana to treat or alleviate a registered qualifying
    patient’s debilitating medical condition or symptoms associated with the debilitating
    medical condition.” MCL 333.26423(f).
    14
    this act, provided that the qualifying patient possesses an amount of
    marihuana that does not exceed 2.5 ounces of usable marihuana, and, if the
    qualifying patient has not specified . . . a primary caregiver . . . , 12
    marihuana plants kept in an enclosed, locked facility.[35]
    A registered qualifying patient, therefore, may possess up to 2.5 ounces of usable
    marijuana. 36 Additionally, a registered qualifying patient may possess up to 12 marijuana
    plants, kept in an enclosed, locked facility, unless that patient specified a primary
    caregiver during the state registration process. 37 Section 4 immunity also requires that
    the registered qualifying patient was engaged in the medical use of marijuana.
    Similarly, § 4(b) provides immunity to registered primary caregivers. It states, in
    relevant part:
    (b) A primary caregiver who has been issued and possesses a
    registry identification card shall not be subject to arrest, prosecution, or
    penalty in any manner . . . for assisting a qualifying patient to whom he or
    she is connected through the department’s registration process with the
    medical use of marihuana in accordance with this act. . . . This subsection
    applies only if the primary caregiver possesses an amount of marihuana that
    does not exceed:
    (1) 2.5 ounces of usable marihuana for each qualifying patient to
    whom he or she is connected through the department’s registration process;
    and
    35
    MCL 333.26424(a).
    36
    “Usable marihuana” is defined as “the dried leaves and flowers of the marihuana plant,
    and any mixture or preparation thereof, but does not include the seeds, stalks, and roots of
    the plant.” MCL 333.26423(k).
    37
    When a patient does not specify a primary caregiver through the state registration
    process, the patient is typically considered his or her own caregiver. When no primary
    caregiver is properly identified under the law, the patient has legal authority to possess up
    to 12 marijuana plants.
    15
    (2) for each registered qualifying patient who has specified that the
    primary caregiver will be allowed under state law to cultivate marihuana for
    the qualifying patient, 12 marihuana plants kept in an enclosed, locked
    facility; and
    (3) any incidental amount of seeds, stalks, and unusable roots.
    A primary caregiver, therefore, may only possess up to 2.5 ounces of usable marijuana
    and 12 marijuana plants in an enclosed, locked facility for each registered qualifying
    patient who has specified the primary caregiver during the state registration process.
    Similar to § 4(a), this section only applies if the primary caregiver is assisting a
    qualifying patient with the medical use of marijuana.
    1. PROCEDURAL ASPECTS OF § 4
    We begin our analysis of the procedural aspects of § 4 with the rather
    unremarkable proposition that entitlement to immunity under § 4 is a question of law.
    Immunity is a unique creature in the law and is distinguishable from other traditional
    criminal defenses. A successful claim of immunity excuses an alleged offender for
    engaging in otherwise illegal conduct, regardless of the sufficiency of proofs in the
    underlying case. This is consistent with the way claims of immunity are handled in other
    areas of law. 38 Moreover, the parties agree that § 4 immunity should be determined as a
    matter of law. There is no indication that the voters who enacted the MMMA intended to
    treat § 4 immunity differently than other claims of immunity.
    38
    Morden v Grand Traverse Co, 
    275 Mich. App. 325
    , 340; 738 NW2d 278 (2007)
    (“Whether a defendant is entitled to qualified immunity is a question of law . . . .”);
    Snead v John Carlo, Inc, 
    294 Mich. App. 343
    , 354; 813 NW2d 294 (2011) (“[T]he
    determination regarding the applicability of governmental immunity and a statutory
    exception to governmental immunity is a question of law . . . .”).
    16
    Our decision in Kolanek supports this conclusion. There we explained that § 4
    “ ‘grants qualifying patient[s]’ who hold ‘registry identification card[s]’ broad immunity
    from criminal prosecution, civil penalties, and disciplinary actions.” 39         A registered
    qualifying patient, however, “who do[es] not qualify for immunity under § 4, as well as
    unregistered persons, are entitled to assert in a criminal prosecution the affirmative
    defense . . . under § 8 . . . .” 40 By contrasting the broad grant of immunity in § 4 “from
    prosecution” with the affirmative defense in § 8 “in a criminal prosecution,” we implied
    that the decision regarding entitlement to immunity must be made before trial. By its
    very nature, immunity must be decided by the trial court as a matter of law, and in
    pretrial proceedings, in order to establish immunity from prosecution.
    Deciding these questions of law necessarily involves resolving factual disputes.
    To determine whether a defendant is entitled to the § 4 grant of immunity, the trial court
    must make factual determinations, including whether the defendant has a valid registry
    identification card and whether he or she complied with the volume, storage, and medical
    use limitations.     The expediency of having the trial court resolve factual questions
    surrounding § 4 underscores the purpose of granting immunity from prosecution.
    Other matters routinely conducted in pretrial contexts, such as entrapment
    hearings, call for the trial court to act as both the finder of fact and arbiter of law. 41 Like
    39
    
    Kolanek, 491 Mich. at 394
    -395 (emphasis added).
    40
    
    Id. at 415
    (emphasis added).
    41
    See People v Julliet, 
    439 Mich. 34
    , 61; 475 NW2d 786 (1991) (opinion by BRICKLEY,
    J.) (entrapment determined by trial court); People v Jones, 
    301 Mich. App. 566
    , 575-576;
    837 NW2d 7 (2013) (discussing similarities between § 4 immunity hearings and
    entrapment hearings).
    17
    entrapment, § 4 immunity “is not a defense that negates an essential element of the
    charged crime. Instead, it presents facts that are collateral to the crime that justify barring
    the defendant’s prosecution.” 42 We therefore conclude that the trial court must resolve
    factual disputes for the purpose of determining § 4 immunity.
    Of course, the trial court’s determinations are not without review. Questions of
    law are reviewed de novo by appellate courts. 43 A trial court’s factual findings are
    subject to appellate review under the clearly erroneous standard:
    Findings of fact by the trial court may not be set aside unless clearly
    erroneous. In the application of this principle, regard shall be given to the
    special opportunity of the trial court to judge the credibility of the witnesses
    who appeared before it.[44]
    We find no reason, nor have the parties offered any reason, to deviate from this
    model of appellate review. Therefore, we conclude that specific factual findings made by
    the trial court in a § 4 immunity hearing are reviewed under the clearly erroneous
    standard, and questions of law surrounding the grant or denial of § 4 immunity are
    reviewed de novo. Further, the trial court’s ultimate grant or denial of immunity is fact-
    dependent and is reviewed for clear error. 45
    42
    
    Julliet, 439 Mich. at 52
    (opinion by BRICKLEY, J.).
    43
    See People v Keller, 
    479 Mich. 467
    , 473-474; 739 NW2d 505 (2007).
    44
    MCR 2.613(C).
    45
    See People v Johnson, 
    466 Mich. 491
    , 497; 647 NW2d 480 (2002), citing People v
    Jamieson, 
    436 Mich. 61
    , 80; 461 NW2d 884 (1990) (opinion by BRICKLEY, J.).
    18
    2. SUBSTANTIVE ASPECTS OF § 4
    Section 4 provides a broad grant of immunity from criminal prosecution and civil
    penalties to registered qualifying patients and connected primary caregivers. As we have
    stated, the statute leaves much to be desired regarding the proper implementation of this
    grant of immunity. When addressing this question, we must consider (a) the evidentiary
    burden required to establish immunity and the presumption of medical use under § 4, (b)
    the elements required to establish immunity and the presumption of medical use, and (c)
    what evidence may properly rebut a presumption of medical use.
    a. BURDEN OF PROOF
    The MMMA is silent regarding the burden of proof necessary for a defendant to
    be entitled to immunity under § 4. When statutes are silent as to the burden of proof, “we
    are free to assign it as we see fit, as long as we do not transgress the constitutional
    requirement that we not place on the defendant the burden of persuasion to negate an
    element of the crime.” 46
    Assigning the burden of proof involves two distinct legal concepts. The first, the
    burden of production, requires a party to produce some evidence of that party’s
    propositions of fact.47 The second, the burden of persuasion, requires a party to convince
    the trier of fact that those propositions of fact are true. 48 The prosecution has the burden
    46
    People v Mezy, 
    453 Mich. 269
    , 283; 551 NW2d 389 (1996), citing Patterson v New
    York, 
    432 U.S. 197
    ; 
    97 S. Ct. 2319
    ; 
    53 L. Ed. 2d 281
    (1977).
    47
    See McCormick, Evidence (7th ed), § 336, pp 644-645.
    48
    
    Id. Some courts
    have conflated the burden of proof with the burden of persuasion or
    the burden of production. See Director, Office of Workers’ Comp Programs v Greenwich
    Collieries, 
    512 U.S. 267
    , 272-276; 
    114 S. Ct. 2251
    ; 
    129 L. Ed. 2d 221
    (1994) (referring to
    19
    of proving every element of a charged crime beyond a reasonable doubt. 49 This rule of
    law exists in part to ensure that “there is a presumption of innocence in favor of the
    accused . . . and its enforcement lies at the foundation of the administration of our
    criminal law.” 50 To place the burden on a criminal defendant to negate a specific element
    of a crime would clearly run afoul of this axiomatic, elementary, and undoubted principle
    of law. 51
    A defendant invoking § 4 immunity, however, does so without regard to any
    presumption of innocence. The defendant does not dispute any element of the underlying
    charge when claiming immunity. Indeed, the defendant may even admit to otherwise
    unlawful conduct and yet still be entitled to § 4 immunity. When claiming § 4 immunity,
    the defendant places himself in an offensive position, affirmatively arguing entitlement to
    § 4 immunity without regard to his or her underlying guilt or innocence of the crime
    charged.      In People v D’Angelo, we determined that the accusatorial nature of a
    defendant’s request for a defense of entrapment, without regard to his or her guilt or
    innocence of the underlying criminal charge, required the burden of proof by a
    the “burden of proof” as the “burden of persuasion”). But these are different concepts.
    The burden of proof, which may also be generally referred to as a party’s evidentiary
    burden, refers both to a party’s burden to provide actual evidence of alleged facts and a
    party’s burden to persuade the trier of fact as to the veracity of those facts.
    49
    See People v Crawford, 
    458 Mich. 376
    , 389; 582 NW2d 785 (1998) (“[T]he
    prosecution must carry the burden of proving every element beyond a reasonable
    doubt . . . .”).
    50
    Coffin v United States, 
    156 U.S. 432
    , 453; 
    15 S. Ct. 394
    ; 
    39 L. Ed. 481
    (1895).
    51
    
    Id. 20 preponderance
    of the evidence to be allocated to the defendant. 52 The accusatorial nature
    of an entrapment defense and the offensive nature of immunity are similar because in
    both the defendant posits an affirmative argument, rather than defending a particular
    charge. We now follow this well-established rule of criminal procedure and assign to the
    defendant the burden of proving § 4 immunity by a preponderance of the evidence.
    b. ELEMENTS REQUIRED TO ESTABLISH IMMUNITY
    A defendant may claim entitlement to immunity for any or all charged offenses.
    Once a claim of immunity is made, the trial court must conduct an evidentiary hearing to
    factually determine whether, for each claim of immunity, the defendant has proved each
    element required for immunity. These elements consist of whether, at the time of the
    charged offense, the defendant:
    (1) was issued and possessed a valid registry identification card,
    (2) complied with the requisite volume limitations of § 4(a) and § 4(b),
    (3) stored any marijuana plants in an enclosed, locked facility, and
    (4) was engaged in the medical use of marijuana. 53
    The court must examine the first element of immunity—possession of a valid
    registry identification card—on a charge-by-charge basis. In most cases, satisfying the
    first element will be an all-or-nothing proposition. A qualifying patient or primary
    caregiver who does not have a valid registry identification card is not entitled to
    immunity because the first element required for immunity cannot be satisfied.
    52
    People v D’Angelo, 
    401 Mich. 167
    , 180, 183; 257 NW2d 655 (1977).
    53
    MCL 333.26424(a)-(b).
    21
    Conversely, a qualifying patient or primary caregiver satisfies the first element of
    immunity if he or she possessed a valid registry identification card at all times relevant to
    the charged offenses. In some cases, there may be a gap between a qualifying patient’s or
    a primary caregiver’s earliest conduct underlying the charged offenses and his or her
    most recent conduct. A court must pay special attention to whether the effective date or
    expiration date of a registry identification card occurred within this gap and determine
    whether the conduct occurred when the patient or caregiver possessed a valid registry
    identification card. A qualifying patient or primary caregiver can only satisfy the first
    element of immunity for any charge if all conduct underlying that charge occurred during
    a time when the qualifying patient or primary caregiver possessed a valid registry
    identification card.
    Generally, the second and third elements of immunity are also all-or-nothing
    propositions. The second element—the volume limitations of § 4(a) and § 4(b)—requires
    that the qualifying patient or primary caregiver be in possession of no more than a
    specified amount of usable marijuana and a specified number of marijuana plants. When
    a primary caregiver is connected with one or more qualifying patients, the amount of
    usable marijuana and the number of plants is calculated in the aggregate—2.5 ounces of
    usable marijuana and 12 marijuana plants for each qualifying patient, including the
    caregiver if he or she is also a registered qualifying patient acting as his or her own
    caregiver. 54 When a qualifying patient cultivates his or her own marijuana for medical
    54
    For example, a registered qualifying patient who is his or her own caregiver and the
    caregiver to five other qualifying patients is allowed to possess up to 72 marijuana plants
    and up to 15 ounces of usable marijuana. If that individual actually possessed 73
    22
    use and is not connected with a caregiver, the patient is limited to 2.5 ounces of usable
    marijuana and 12 marijuana plants.        A qualifying patient or primary caregiver in
    possession of more marijuana than allowed under § 4(a) and § 4(b) at the time of the
    charged offense cannot satisfy the second element of immunity.
    The third element of § 4 immunity requires all marijuana plants possessed by a
    qualifying patient or primary caregiver to be kept in an enclosed, locked facility. Thus, a
    qualifying patient or primary caregiver whose marijuana plants are not kept in an
    enclosed, locked facility at the time of the charged offense cannot satisfy the third
    element and cannot receive immunity for the charged offense.
    The fourth element conditions immunity on the “medical use” of marijuana, as
    defined in § 3(f). Unlike elements two and three, the fourth element does not depend on
    the defendant’s aggregate conduct. Instead, this element depends on whether the conduct
    forming the basis of each particular criminal charge involved “the acquisition,
    possession, cultivation, manufacture, use, internal possession, delivery, transfer, or
    transportation of marihuana or paraphernalia relating to the administration of marihuana
    to treat or alleviate a registered qualifying patient’s debilitating medical condition or
    symptoms associated with the debilitating medical condition.” 55 Whether a qualifying
    patient or primary caregiver was engaged in the medical use of marijuana must be
    determined on a charge-by-charge basis.
    marijuana plants or 16 ounces of usable marijuana and was charged with multiple
    marijuana-related offenses, the individual could not satisfy the second element of
    immunity under § 4 for any of the charged offenses because the individual possessed
    marijuana in excess of the volume limitations in § 4(a) and § 4(b).
    55
    MCL 333.26423(f).
    23
    While the qualifying patient or primary caregiver retains the burden of proving
    this fourth and last element of immunity, § 4(d) of the MMMA creates a rebuttable
    presumption of medical use when the qualifying patient or primary caregiver satisfies
    certain requirements.
    (d) There shall be a presumption that a qualifying patient or primary
    caregiver is engaged in the medical use of marihuana in accordance with
    this act if the qualifying patient or primary caregiver:
    (1) is in possession of a registry identification card; and
    (2) is in possession of an amount of marihuana that does not exceed
    the amount allowed under this act. The presumption [that one is engaged in
    the medical use of marihuana] may be rebutted by evidence that conduct
    related to marihuana was not for the purpose of alleviating the qualifying
    patient’s debilitating medical condition or symptoms associated with the
    debilitating medical condition, in accordance with this act.[56]
    The requirements necessary to establish the presumption of medical use mirror the first
    two elements required to establish immunity. Therefore, a qualifying patient or primary
    caregiver is entitled to the presumption of medical use in § 4(d) simply by establishing
    the first two elements of § 4 immunity. 57
    In sum, a qualifying patient seeking to assert the protections of § 4 must prove
    four elements by a preponderance of the evidence. A qualifying patient must prove that,
    at the time of the charged offense, he or she (1) possessed a valid registry identification
    card; (2) possessed no more marijuana than allowed under § 4(a); (3) stored any
    56
    MCL 333.26424(d).
    57
    These elements are (1) possessing a valid registry identification card, and (2)
    complying with the volume limitations of § 4(a) and § 4(b).
    24
    marijuana plants in an enclosed, locked facility; and (4) was engaged in the medical use
    of marijuana. If the qualifying patient establishes the first and second elements, then a
    presumption exists that the qualifying patient was engaged in the medical use of
    marijuana, thereby establishing the fourth element.
    Similarly, a primary caregiver seeking to assert the protections of § 4 must prove
    four elements by a preponderance of the evidence. A primary caregiver must prove that,
    at the time of the charged offense, he or she (1) possessed a valid registry identification
    card; (2) possessed no more marijuana than allowed under § 4(b); (3) stored any
    marijuana plants in an enclosed, locked facility; and (4) was assisting connected
    qualifying patients with the medical use of marijuana.           If the primary caregiver
    establishes the first and second elements, then a presumption exists that the primary
    caregiver was engaged in the medical use of marijuana, thereby establishing the fourth
    element.
    c. REBUTTING THE PRESUMPTION
    The presumption of the medical use of marijuana is a powerful tool for a
    defendant in asserting § 4 immunity. But this presumption is rebuttable:
    The presumption [that one is engaged in the medical use of
    marihuana] may be rebutted by evidence that conduct related to marihuana
    was not for the purpose of alleviating the qualifying patient’s debilitating
    medical condition or symptoms associated with the debilitating medical
    condition, in accordance with this act.[58]
    58
    MCL 333.26424(d)(2).
    25
    According to § 4(d)(2), the presumption of the medical use of marijuana may be rebutted
    by examining “conduct related to marihuana . . . .” While the statute does not specifically
    state whose marijuana-related conduct may be used, when read in context it is clear that it
    refers to the defendant’s conduct. Stated differently, in § 4(d), only the defendant’s
    conduct may be considered to rebut the presumption of the medical use of marijuana.
    This interpretation is consistent with the purpose of § 4, which is to provide immunity
    from prosecution to a defendant who abides by certain restrictions.
    For this reason, we hold that the prosecution may not rebut a primary caregiver’s
    presumption of medical use by introducing evidence of conduct unrelated to the primary
    caregiver, 59 such as evidence that a connected qualifying patient does not actually have a
    debilitating medical condition or evidence that a connected qualifying patient used
    marijuana for nonmedical purposes.        Similarly, the prosecution may not rebut a
    qualifying patient’s presumption of medical use by introducing evidence that the
    connected primary caregiver used the qualifying patient’s marijuana for nonmedical
    purposes. 60
    59
    We recognize that “conduct” may be misfeasance as well as nonfeasance. Nothing in
    our holding should be interpreted to shield a primary caregiver who has actual knowledge
    that the marijuana provided to a qualifying patient is being used in a manner not
    permitted under the MMMA.
    60
    The MMMA requires the state to verify all information contained in an application for
    a registry identification card and to keep confidential the list of registry identification
    cards issued, except to verify the validity of such cards to law enforcement. Hartwick
    and Tuttle both argue that because of the verification and confidentiality requirements,
    the issuance of a registry identification card establishes either immunity under § 4 or, at
    least, a presumption of the medical use of marijuana under § 4(d). As we have already
    concluded, a registry identification card is only one requirement for establishing
    immunity under § 4. The verification and confidentiality provisions do not establish that
    26
    We must also determine whether one or more transactions that are outside the
    scope of the MMMA may rebut the presumption of medical use for otherwise-compliant
    MMMA conduct. As noted § 4(d)(2) provides the prosecution with the ability to rebut
    this presumption. 61
    In Tuttle, the Court of Appeals held that a noncompliant marijuana transaction
    negates a defendant’s ability to claim § 4 immunity as to the defendant’s entire
    marijuana-related conduct. The court determined that Ҥ 4 does not allow [a] defendant
    to decouple . . . illicit actions involving marijuana from . . . other[wise MMMA-
    compliant] marijuana-related activities . . . .” 62   The court concluded that illicit
    marijuana-related conduct rebuts the § 4(d) presumption of medical use for otherwise
    MMMA-compliant conduct. 63
    The prosecution agrees with the Court of Appeals, arguing that if a primary
    caregiver has provided marijuana to an unconnected individual, the presumption of
    medical use has been rebutted for all of the primary caregiver’s marijuana-related
    conduct, including conduct that otherwise complies with § 4. Therefore, according to the
    prosecution, any unprotected marijuana-related conduct rebuts a defendant’s presumption
    a defendant has engaged in the medical use of marijuana or abided by the requisite
    volume and storage limitations of § 4(a) and § (4)(b). Simply put, a registry
    identification card, alone, does not establish § 4 immunity or a presumption of the
    medical use of marijuana under § 4(d).
    61
    MCL 333.26424(d)(2).
    62
    
    Tuttle, 304 Mich. App. at 84
    .
    63
    
    Id. 27 of
    medical use for all of the defendant’s marijuana-related conduct, regardless of its
    relevance to the charged offense.
    Tuttle argues that unprotected marijuana-related conduct may only rebut the
    presumption as to otherwise protected conduct if a nexus exists between the unprotected
    conduct and the protected conduct. In Tuttle, counts I-III relate to unprotected transfers
    of marijuana from Tuttle to an unconnected patient. Tuttle agrees that this conduct is not
    protected and that there is no § 4 immunity with regard to that conduct. Counts IV-VII,
    however, relate to the marijuana being manufactured in Tuttle’s home. Tuttle argues that
    the conduct in counts I-III does not necessarily affect the conduct underlying counts IV-
    VII.
    Tuttle specifically stresses that § 4(d)(2) provides that the presumption of medical
    use “may” be rebutted. Tuttle relies on the word “may” for the proposition that the trial
    court in its fact-finding capacity may either reject or accept evidence presented by the
    prosecution. Therefore, Tuttle claims, the trial court is not obligated to accept evidence
    of an unrelated and unprotected transaction to rebut the presumption of medical use for
    an otherwise protected transaction.
    It is clear, as Tuttle concedes, that conduct violating the MMMA directly rebuts
    the presumption of medical use when a defendant’s charges are based on that specific
    conduct (such as the illicit conduct on which counts I-III against Tuttle are based). It is
    not clear, however, that conduct violating the MMMA would also rebut the presumption
    of medical use related to other charges against the defendant when the illicit conduct does
    not form the basis of charges (such as the otherwise MMMA-compliant conduct on
    which counts IV-VII against Tuttle are based). While the statutory language is neither
    28
    compelling nor expressly direct, we nonetheless conclude that the statutory text lends
    support for Tuttle’s proposition.
    Use of the permissive “may,” in conjunction with the trial court’s general
    gatekeeping responsibility to admit only relevant evidence, 64 leads us to conclude that to
    rebut the presumption of medical use the prosecution’s rebuttal evidence must be
    relevant, such that the illicit conduct would allow the fact-finder to conclude that the
    otherwise MMMA-compliant conduct was not for the medical use of marijuana. In other
    words, the illicit conduct and the otherwise MMMA-compliant conduct must have a
    nexus to one another in order to rebut the § 4(d) presumption. This is consistent with the
    conclusions that the fourth element of immunity—medical use—is dependent only on the
    conduct forming the basis for each particular criminal charge and that immunity is
    claimed and generally proved on a charge-by-charge basis.
    Further, Tuttle’s view not only has statutory support, but also comports with how
    generally a presumption should be rebutted. Only relevant evidence that allows the fact-
    finder to conclude that the underlying conduct was not for “medical use” may rebut the
    § 4(d) presumption. A wholly unrelated transaction—i.e., a transaction with no nexus,
    and therefore no relevance, to the conduct resulting in the charged offense—does not
    assist the fact-finder in determining whether the defendant actually was engaged in the
    medical use of marijuana during the charged offense. Conduct unrelated to the charged
    offense is irrelevant and does not rebut the presumption of medical use.
    64
    See MRE 401 and MRE 402.
    29
    Therefore, under § 4(d)(2), the prosecution may rebut the presumption of medical
    use for each claim of immunity. Improper conduct related to one charged offense may
    not be imputed to another charged offense unless the prosecution can establish a nexus
    between the improper conduct and the otherwise MMMA-compliant conduct. The trial
    court must ultimately determine whether a defendant has established by a preponderance
    of the evidence that he or she was engaged in the medical use of marijuana. The
    defendant may do so by establishing this powerful presumption of medical use. If the
    presumption of medical use has been rebutted, however, the defendant may still prove
    through other evidence that, with regard to the underlying conduct that resulted in the
    charged offense and for which the defendant claims immunity, the defendant was
    engaged in the medical use of marijuana, as defined in § 3(f).
    C. SECTION 8 DEFENSE
    Section 8(a) of the MMMA provides any patient or primary caregiver—regardless
    of registration with the state—with the ability to assert an affirmative defense to a
    marijuana-related offense. The affirmative defense “shall be presumed valid where the
    evidence shows”:
    (1) A physician has stated that, in the physician’s professional
    opinion, after having completed a full assessment of the patient’s medical
    history and current medical condition made in the course of a bona fide
    physician-patient relationship, the patient is likely to receive therapeutic or
    palliative benefit from the medical use of marihuana to treat or alleviate the
    patient’s serious or debilitating medical condition or symptoms of the
    patient’s serious or debilitating medical condition;
    (2) The patient and the patient’s primary caregiver, if any, were
    collectively in possession of a quantity of marihuana that was not more than
    was reasonably necessary to ensure the uninterrupted availability of
    marihuana for the purpose of treating or alleviating the patient’s serious or
    30
    debilitating medical condition or symptoms of the patient’s serious or
    debilitating medical condition; and
    (3) The patient and the patient’s primary caregiver, if any, were
    engaged in the acquisition, possession, cultivation, manufacture, use,
    delivery, transfer, or transportation of marihuana or paraphernalia relating
    to the use of marihuana to treat or alleviate the patient’s serious or
    debilitating medical condition or symptoms of the patient’s serious or
    debilitating medical condition.[65]
    In Kolanek, we determined that if a defendant establishes these elements and no
    question of fact exists regarding these elements, then the defendant is entitled to dismissal
    of the criminal charges. 66 We also clarified that if questions of fact exist, then “dismissal
    of the charges is not appropriate and the defense must be submitted to the jury.” 67
    Additionally, if a defendant has not presented prima facie evidence of each element of § 8
    by “present[ing] evidence from which a reasonable jury could conclude that the
    defendant satisfied the elements of the § 8 affirmative defense, . . . then the circuit court
    must deny the motion to dismiss the charges,” and “the defendant is not permitted to
    present the § 8 defense to the jury.” 68
    A defendant seeking to assert the MMMA’s statutory affirmative defense must
    present prima facie evidence for each element of § 8(a). 69 Overcoming this initial hurdle
    65
    MCL 333.26428(a)(1)-(3).
    66
    
    Kolanek, 491 Mich. at 416
    .
    67
    
    Id. 68 Id.
    69
    
    Id. at 415
    -416. In Kolanek, we did not determine the standard by which a defendant
    must establish a § 8 defense. We now clarify that well-established rules of criminal
    procedure require a defendant to prove the affirmative defense by a preponderance of
    evidence. See, e.g., 
    D’Angelo, 401 Mich. at 183
    (holding that the defendant has the
    31
    of presenting prima facie evidence of each element is not an easy task. The elements of
    § 8 are clearly more onerous than the elements of § 4. The statutory scheme of the
    MMMA is designed to benefit those who properly register and are meticulous in their
    adherence to the law.       Presumably, a properly registered defendant facing criminal
    charges would invoke immunity under § 4. However, a § 8 defense may be pursued by
    any defendant, regardless of registration status. With this background, we consider each
    element of the § 8 affirmative defense.
    1. SECTION 8(A)(1): THE IMPRIMATUR OF THE
    PHYSICIAN-PATIENT RELATIONSHIP
    Section 8(a)(1) requires a physician to determine the patient’s suitability for the
    medical use of marijuana. It provides:
    (1) A physician has stated that, in the physician’s professional
    opinion, after having completed a full assessment of the patient’s medical
    history and current medical condition made in the course of a bona fide
    physician-patient relationship, the patient is likely to receive therapeutic or
    palliative benefit from the medical use of marihuana to treat or alleviate the
    patient’s serious or debilitating medical condition or symptoms of the
    patient’s serious or debilitating medical condition[.][70]
    This provision may be reduced to three elements:
    (1) The existence of a bona fide physician-patient relationship,
    (2) in which the physician completes a full assessment of the patient’s
    medical history and current medical condition, and
    burden of proving entrapment by a preponderance of the evidence). Thus, when the § 8
    affirmative defense is submitted to a fact-finder, the defendant’s burden of proof is to
    establish the elements of § 8(a) by a preponderance of the evidence.
    70
    MCL 333.26428(a)(1).
    32
    (3) from which results the physician’s professional opinion that the patient
    has a debilitating medical condition and will likely benefit from the medical
    use of marijuana to treat the debilitating medical condition.
    Each of these elements must be proved in order to establish the imprimatur of the
    physician-patient relationship required under § 8(a)(1) of the MMMA. Hartwick and
    Tuttle argue that the registry identification card establishes these three elements. We do
    not find merit in this position.
    As part of the process for obtaining a registry identification card, an applicant
    must submit, among other materials, a “written certification.” 71 At the time of the
    offenses at issue, 72 the MMMA defined a written certification as:
    [A] document signed by a physician, stating the patient’s debilitating
    medical condition and stating that, in the physician’s professional opinion,
    the patient is likely to receive therapeutic or palliative benefit from the
    medical use of marihuana to treat or alleviate the patient’s debilitating
    medical condition or symptoms associated with the debilitating medical
    condition.[73]
    Thus, at the time of the offenses at issue, a written certification was a document prepared
    by a physician that contained at least two representations: (1) the patient has a debilitating
    medical condition, and (2) the patient will likely benefit from the medical use of
    marijuana. Further, MCL 333.26426(c) provides that the department “shall verify the
    71
    MCL 333.26426(a)(1).
    72
    In 2012, the Legislature garnered sufficient votes to satisfy the three-fourths super
    majority required to amend a voter-enacted initiative and amended the MMMA to include
    the additional requirement that the physician conducted a full, in-person assessment of
    the patient. See 
    2012 PA 512
    , effective April 1, 2013.
    73
    Former MCL 333.26423(l). “Written certification” has since been amended and
    renumbered as § 3(m). See 
    2012 PA 512
    , effective April 1, 2013.
    33
    information contained in an application” and that the department “may deny an
    application . . . only if the applicant did not provide the information required pursuant to
    this section, or if the department determines that the information provided was falsified.”
    Comparing the definition of “written certification” with the elements of § 8(a)(1),
    a registry identification card satisfies the third element (the patient has a debilitating
    medical condition and would likely benefit from the medical use of marijuana). A
    registry identification card, however, does not establish the second element (a physician
    has completed a full assessment of the patient’s medical history and current medical
    condition). 74 The second element must be established through medical records or other
    evidence submitted to show that the physician actually completed a full assessment of the
    patient’s medical history and current medical condition before concluding that the patient
    is likely to benefit from the medical use of marijuana and before the patient engages in
    the medical use of marijuana. Additionally, the physician certification leaves unsatisfied
    the first element of § 8(a)(1) (the existence of a bona fide physician-patient relationship).
    At the time of the offenses at issue, the MMMA did not define “bona fide
    physician-patient relationship.” 75 In Kolanek, we stated that “this term envisions ‘a pre-
    74
    We note that registry identification cards issued on or after April 1, 2013, the effective
    date of 
    2012 PA 512
    , establish the second element. See note 72 of this opinion.
    75
    The MMMA has since been amended by 
    2012 PA 512
    , effective April 1, 2013, to
    define a “bona fide physician-patient relationship.”
    “Bona fide physician-patient relationship” means a treatment or
    counseling relationship between a physician and patient in which all of the
    following are present:
    (1) The physician has reviewed the patient’s relevant medical
    records and completed a full assessment of the patient’s medical history
    34
    existing and ongoing relationship with the patient as a treating physician.’ ” 76 Thus, to
    satisfy the first element—the existence of a bona fide physician-patient relationship—
    there must be proof of an actual and ongoing physician-patient relationship at the time the
    written certification was issued. 77
    and current medical condition, including a relevant, in-person, medical
    evaluation of the patient.
    (2) The physician has created and maintained records of the patient’s
    condition in accord with medically accepted standards.
    (3) The physician has a reasonable expectation that he or she will
    provide follow-up care to the patient to monitor the efficacy of the use of
    medical marihuana as a treatment of the patient’s debilitating medical
    condition.
    (4) If the patient has given permission, the physician has notified the
    patient’s primary care physician of the patient’s debilitating medical
    condition and certification for the use of medical marihuana to treat that
    condition. [MCL 333.26423(a).]
    76
    
    Kolanek, 491 Mich. at 396
    n 30 (quoting a joint statement by the Michigan Board of
    Medicine and the Michigan Board of Osteopathic Medicine and Surgery).
    77
    We acknowledge that the actual text of the physician’s statement submitted as part of
    the registration process might suffice. Although hearsay, the physician’s written
    certification is a “report of . . . occurrences, events, conditions, opinions, or diagnoses,
    made at or near the time by . . . a person with knowledge [that is] kept in the course of a
    regularly conducted business activity [and is a] regular practice of that business activity
    to make . . . .” MRE 803(6). That physicians are required by statute to prepare a
    certificate to recommend the medical use of marijuana tends to establish that the
    certificate is prepared in regular practice. Moreover, nothing prevents a physician from
    including a statement in the written certificate indicating that it was prepared in the
    course of a bona fide physician-patient relationship or indicating the physician’s
    recommendation as to the particular amount of marijuana. Likewise, nothing prevents
    the department from revising the physician certification to attest to these elements. Nor
    does anything prevent another individual from creating his or her own written
    certification acceptable to the department. Accordingly, the written certification could
    itself provide prima facie evidence of the elements of § 8(a). Further, a defendant may
    35
    A primary caregiver has the burden of establishing the elements of § 8(a)(1) for
    each patient to whom the primary caregiver is alleged to have unlawfully provided
    marijuana. In this context, a primary caregiver who provides marijuana to a putative
    patient plainly assumes the risk that the patient does not actually meet the elements of
    § 8(a)(1) or that the patient may not cooperate in a subsequent prosecution of the primary
    caregiver, regardless what that person may have otherwise told the primary caregiver. 78
    2. SECTION 8(a)(2): THE QUANTITY OF MARIJUANA
    Section 8(a)(2) requires a patient or primary caregiver to show:
    The patient and the patient’s primary caregiver, if any, were
    collectively in possession of a quantity of marihuana that was not more than
    was reasonably necessary to ensure the uninterrupted availability of
    marihuana for the purpose of treating or alleviating the patient’s serious or
    debilitating medical condition or symptoms of the patient’s serious or
    debilitating medical condition[.][79]
    present patient testimony or other evidence to satisfy his or her burden of presenting
    prima facie evidence of the elements of § 8(a). A defendant who submits proper
    evidence would not likely need his or her physician to testify to establish prima facie
    evidence of any element of § 8(a).
    78
    Because “[p]ossession, manufacture, and delivery of marijuana remain punishable
    offenses under Michigan law,” 
    Kolanek, 491 Mich. at 394
    , a caregiver-defendant’s patient
    might be unwilling to testify to the patient’s marijuana-related activities due to fear of
    criminal prosecution. This would present a significant barrier to the caregiver’s ability to
    establish a defense under § 8. And because a witness cannot be compelled to give
    testimony that the witness reasonably believes could be used against him or her in a
    criminal prosecution, a patient’s justified refusal to cooperate might prove fatal to the
    primary caregiver’s § 8 defense. See Hoffman v United States, 
    341 U.S. 479
    , 486; 
    71 S. Ct. 814
    ; 
    95 L. Ed. 1118
    (1951) (“It is for the court to say whether [the witness’s] silence is
    justified.”). While this may seem a harsh consequence, this Court has no power to alter
    the statutory language.
    79
    MCL 333.26428(a)(2).
    36
    The critical phrase from the above quoted passage is “reasonably necessary to
    ensure uninterrupted availability of marihuana [for treatment] . . . .” Hartwick and Tuttle
    maintain that a registry identification card establishes a presumption that any amount of
    marijuana possessed by a defendant is a reasonable amount of marijuana under the
    MMMA. In the alternative, they argue that a valid registry identification card, coupled
    with compliance with the volume limitations in § 4, establishes a presumption that the
    amount of marijuana possessed is reasonable. Again, we do not find support for the
    defendants’ position in the text of the MMMA.
    The issuance of a registry identification card or compliance with the volume
    limitations in § 4 does not show that an individual possesses only a “reasonably
    necessary” amount of marijuana “to ensure uninterrupted availability” for the purposes of
    § 8(a)(2). A registry identification card simply qualifies a patient for the medical use of
    marijuana. It does not guarantee that an individual will always possess only the amount
    of marijuana allowed under the MMMA.
    Further, nothing in the MMMA supports the notion that the quantity limits found
    in the immunity provision of § 4 should be judicially imposed on the affirmative defense
    provision of § 8. Sections 4 and 8 feature contrasting statutory language intended to
    serve two very different purposes. 80    Section 4 creates a specific volume limitation
    applicable to those seeking immunity. In contrast, § 8 leaves open the volume limitation
    to that which is “reasonably necessary.” The MMMA could have specified a specific
    80
    Section 4 grants broad immunity from arrest or prosecution, while § 8 provides for an
    affirmative defense during a prosecution.
    37
    volume limitation in § 8, but it did not. In the absence of such an express limitation, we
    will not judicially assign to § 8 the volume limitation in § 4 to create a presumption of
    compliance with § 8(a)(2). Indeed, the only instance in which a primary caregiver must
    control a patient’s dosage is when he or she is the parent of a minor patient. 81 That the
    statute requires these particular caregivers to control a patient’s dosage, but does not
    require it of others, indicates that all other caregivers need not be particularly aware of
    their patients’ medical needs. Instead, a primary caregiver may reasonably rely on the
    amount his or her patient states is needed to treat the patient’s debilitating medical
    condition.
    A patient seeking to assert a § 8 affirmative defense may have to testify about
    whether a specific amount of marijuana alleviated the debilitating medical condition and
    if not, what adjustments were made to the consumption rate and the amount of marijuana
    consumed to determine an appropriate quantity. Once the patient establishes the amount
    of usable marijuana needed to treat the patient’s debilitating medical condition,
    determining whether the patient possessed “a quantity of marihuana that was not more
    than was reasonably necessary to ensure [its] uninterrupted availability” also depends on
    how the patient obtains marijuana and the reliability of this source.          This would
    necessitate some examination of the patient/caregiver relationship.
    The same analysis applies to primary caregivers seeking to present a defense under
    § 8. Primary caregivers must establish the amount of usable marijuana needed to treat
    their patients’ debilitating medical conditions and then how many marijuana plants the
    81
    MCL 333.26426(b)(3)(C).
    38
    primary caregiver needs to grow in order ensure “uninterrupted availability” for the
    caregiver’s patients. This likely would include testimony regarding how much usable
    marijuana each patient required and how many marijuana plants and how much usable
    marijuana the primary caregiver needed in order to ensure each patient the “uninterrupted
    availability” of marijuana.
    3. SECTION 8(a)(3): THE USE OF MARIJUANA FOR A MEDICAL PURPOSE
    Section 8(a)(3) requires a patient or primary caregiver to show:
    The patient and the patient’s primary caregiver, if any, were engaged
    in the acquisition, possession, cultivation, manufacture, use, delivery,
    transfer, or transportation of marihuana or paraphernalia relating to the use
    of marihuana to treat or alleviate the patient’s serious or debilitating
    medical condition or symptoms of the patient’s serious or debilitating
    medical condition. [82]
    Although there is a purposeful distinction made between the amount of marijuana
    permitted under § 4 and the “reasonably necessary” restraint on quantity found in
    § 8(a)(2), § 8(a)(3) requires a patient and primary caregiver to show that any marijuana
    use complied with a very similar “medical use” requirement found in § 4, and defined in
    § 3:
    “Medical use” means the acquisition, possession, cultivation,
    manufacture, use, internal possession, delivery, transfer, or transportation
    of marihuana or paraphernalia relating to the administration of marihuana
    to treat or alleviate a registered qualifying patient’s debilitating medical
    condition or symptoms associated with the debilitating medical
    condition.[83]
    82
    MCL 333.26428(a)(3).
    83
    MCL 333.26423(f).
    39
    The slight variance between the definition of “medical use” in § 4 and medical use
    as it appears in § 8 can be attributed to the fact that only registered qualifying patients
    and registered primary caregivers may engage in the “medical use” of marijuana, as
    indicated by use of the term in § 4. 84 Those patients and primary caregivers who are not
    registered may still be entitled to § 8 protections if they can show that their use of
    marijuana was for a medical purpose—to treat or alleviate a serious or debilitating
    medical condition or its symptoms. Hartwick and Tuttle again argue that a registry
    identification card alone, or a registry identification card coupled with compliance with
    either the volume limitations of § 4(a) and (4)(b) or § 8(a)(2), satisfies § 8(a)(3). Once
    again, defendants seek to attribute greater significance to the registry identification card
    than that which is expressly provided in the MMMA. We simply do not find support for
    the defendants’ arguments in the text of the MMMA.
    A registry identification card merely qualifies a patient for the medical use of
    marijuana. It does not establish that at the time of the charged offense, the defendant was
    actually engaged in the protected use of marijuana. Section 8(a)(3) requires that both the
    patient’s and the primary caregiver’s use of marijuana be for a medical purpose, and that
    their conduct be described by the language in § 8(a)(3). Thus, patients must present
    prima facie evidence regarding their use of marijuana for a medical purpose regardless
    whether they possess a registry identification card. Primary caregivers would also have
    84
    The definition in § 4 includes “internal possession” and specifies that the patient is a
    registered qualifying patient. The permitted uses in § 8 do not include “internal
    possession,” and the requirements apply to “patients” who are not necessarily registered.
    40
    to present prima facie evidence of their own use of marijuana for a medical purpose and
    any patients’ use of marijuana for a medical purpose.
    III. APPLICATION TO HARTWICK AND TUTTLE
    A. PEOPLE V HARTWICK
    1. SECTION 4 IMMUNITY
    Hartwick is a registered qualifying patient, his own caregiver, and at all times
    pertinent to this dispute, a primary caregiver to five registered qualifying patients. The
    prosecuting attorney charged Hartwick with manufacturing marijuana and possession of
    marijuana with the intent to deliver. Hartwick sought to invoke § 4 immunity. In order
    to qualify for § 4 immunity, Hartwick must prove by a preponderance of the evidence
    that for each charged offense he
    (1) possessed a valid registry identification card for himself as a
    qualifying patient and for each of the five other connected registered
    qualifying patients,
    (2) possessed no more than 72 marijuana plants and 15 ounces of
    usable marijuana, 85
    (3) kept the marijuana plants in an enclosed, locked facility, and
    (4) was engaged in the medical use of marijuana.
    Hartwick is entitled to a presumption of the medical use of marijuana if he shows
    by a preponderance of the evidence that he possessed:
    85
    As a registered qualifying patient, Hartwick may possess up to 12 marijuana plants and
    2.5 ounces of usable marijuana. As a primary caregiver, Hartwick may possess up to 12
    marijuana plants and 2.5 ounces of usable marijuana for each connected registered
    qualifying patient.
    41
    (1) a valid registry identification card for himself as a patient and for
    each of the five other registered qualifying patients to whom he is
    connected under the MMMA, and
    (2) no more than 72 marijuana plants and 15 ounces of usable
    marijuana.
    The prosecution may then rebut this presumption in accordance with § 4(d)(2).
    The lower courts erred with respect to Hartwick’s entitlement to immunity under
    § 4. There is no statutory requirement under § 4 that Hartwick know the debilitating
    conditions of, the amount of marijuana needed for, the length of time treatment should
    continue for, or the identities of the physicians of, the registered qualifying patients to
    whom Hartwick is connected under the MMMA. This lack of information cannot be
    used to rebut Hartwick’s presumption of the medical use of marijuana under § 4(d). For
    purposes of § 4, the lower courts should have instead focused on Hartwick’s conduct.
    The Court of Appeals also should not have determined that the number of
    marijuana plants Hartwick possessed was “moot.” 86 The trial court never made a factual
    determination of the number of marijuana plants in Hartwick’s possession or the other
    elements of § 4. Even if such facts had been established, the Court of Appeals reviews
    the trial court’s factual findings for clear error. Thus, a new § 4 evidentiary hearing
    conforming to the holdings expressed in this opinion is necessary to determine
    Hartwick’s entitlement to § 4 immunity.
    86
    
    Hartwick, 303 Mich. App. at 259
    .
    42
    2. SECTION 8 DEFENSE
    In contrast to Hartwick’s claim of immunity under § 4, the lower courts correctly
    concluded that Hartwick was not entitled to the § 8 affirmative defense. Even though
    Hartwick provided testimony of his own medical condition and evidence of registry
    identification cards for himself and five patients, he did not present prima facie evidence
    for each element of § 8(a). Specifically, Hartwick failed to provide any evidence of
    § 8(a)(1) (bona fide physician-patient relationship), § 8(a)(2) (amount of marijuana the
    patients needed), or § 8(a)(3) (whether the patients engaged in the use of marijuana for a
    medical purpose).
    Further, to the extent the Court of Appeals determined that a written certification
    was comparable to a pharmaceutical prescription, this determination was erroneous. A
    written certification is not similar to that of a pharmaceutical prescription. Marijuana is a
    Schedule 1 controlled substance. 87 Therefore, a doctor is not legally able to prescribe
    marijuana to an individual for any reason.         A written certification is a statutorily
    mandated document that must meet specific statutory requirements so that an individual
    may successfully apply for a registry identification card. While the MMMA states that
    “[m]odern medical research . . . has discovered beneficial uses for marihuana in
    treating . . . debilitating medical conditions,” 88 the terminology employed in the MMMA
    and the actual function of primary caregivers and patients is not comparable to how a
    87
    See MCL 333.7212(c).
    88
    MCL 333.26422(a).
    43
    medical doctor’s treatment of an actual patient. Primary caregivers carry out a statutorily
    created task that is completely unrelated to how a doctor would treat a patient.
    B. PEOPLE V TUTTLE
    1. SECTION 4 IMMUNITY
    Tuttle is a registered qualifying patient, his own caregiver, and a primary caregiver
    to at least one registered qualifying patient. The prosecuting attorney charged Tuttle with
    multiple counts of manufacturing, possessing, and delivering marijuana. Tuttle sought to
    have counts IV-VII, which relate to the manufacture and possession of marijuana in
    Tuttle’s home, dismissed under the immunity provisions of § 4.
    In order to qualify for immunity under § 4, Tuttle must prove by a preponderance
    of the evidence that for each charged offense he:
    (1) possessed a valid registry identification card for himself as a
    qualifying patient and for each connected registered qualifying patient,
    (2) possessed no more than the volume of marijuana permitted by
    § 4(a) and § 4(b), 89
    (3) kept the marijuana plants in an enclosed, locked facility, and
    (4) was engaged in the medical use of marijuana.
    89
    It is unclear in the record exactly how many qualifying patients Tuttle was connected
    to under the MMMA. Without that information, we are unable to determine how many
    marijuana plants and how much usable marijuana Tuttle was allowed to possess under
    § 4(a) and § 4(b). If Tuttle was his own caregiver and the primary caregiver to two other
    qualifying patients, then Tuttle would be permitted to possess no more than a total of 36
    marijuana plants. Under those facts Tuttle would not be entitled to § 4 immunity for any
    charged offense if he possessed more than 36 marijuana plants.
    44
    Tuttle is entitled to a presumption that he was engaged in the medical use of marijuana if
    he shows by a preponderance of the evidence that he possessed:
    (1) a valid registry identification card for himself as a patient and for
    each connected registered qualifying patient, and
    (2) no more than the volume of marijuana allowed by § 4(a) and
    § 4(b).
    The prosecution may then rebut this presumption in accordance with § 4(d)(2).
    The lower courts erred when they concluded that Tuttle’s provision of marijuana
    to Lalonde necessarily tainted all of Tuttle’s marijuana-related activity thereby negating
    his ability to claim § 4 immunity for each charged offense. Providing marijuana to
    Lalonde did not per se taint all of Tuttle’s marijuana-related conduct. Tuttle was not
    connected to Lalonde under the MMMA. Therefore, Tuttle was clearly outside the
    parameters of § 4 when he provided marijuana to Lalonde (counts I-III).
    Tuttle, however, may still be entitled to immunity for the remaining charges in
    counts IV-VII. With regard to the charges of possessing and manufacturing marijuana in
    his home, the trial court must make factual determinations regarding the number of
    patients connected to Tuttle under the MMMA, the number of marijuana plants Tuttle
    had in his home and the amount of usable marijuana Tuttle possessed, 90 whether the
    marijuana plants were stored in an enclosed, locked facility, and whether Tuttle was
    engaged in the medical use of marijuana.
    90
    Subject to the exclusion of “any incidental amount of seeds, stalks, [or] unusable
    roots . . . .” MCL 333.26424(4)(a) and (4)(b)(3).
    45
    Tuttle must prove entitlement to immunity for each charged offense. And the
    prosecution may only use evidence of conduct relating to one charged offense to rebut the
    presumption of medical use for another charged offense if a nexus exists between the
    charged offenses. Put simply, improper conduct related to Lalonde in counts I-III may
    only affect counts IV-VII if the prosecution can establish a nexus between the improper
    conduct in counts I-III and the otherwise MMMA-compliant conduct in counts IV-VII.
    Only if this nexus exists can the trial court determine that the illicit conduct in counts I-III
    rebuts the presumption that Tuttle was engaged in the medical use of marijuana for the
    conduct underlying counts IV-VII.
    The trial court must ultimately weigh the evidence to determine if the prosecution
    successfully rebutted Tuttle’s presumption of medical use for counts IV-VII by evidence
    of the conduct relating to marijuana in counts I-III and, if so, whether Tuttle has
    otherwise shown that the charged conduct for which he claims immunity was consistent
    with the medical use of marijuana. The flexibility allowing the trial court to make this
    decision in § 4(d) permits the trial court to hear evidence to determine if Tuttle truly was
    a primary caregiver simply trying to assist patients, or if Tuttle acted outside the
    protection of the MMMA. 91
    91
    Under § 4, losing the § 4(d) presumption is not fatal. Even if the prosecution
    successfully rebuts the § 4(d) presumption in counts IV-VII related to Tuttle’s
    manufacturing of marijuana for himself and any patients, Tuttle may still prove by a
    preponderance of the evidence that he satisfied the last element of § 4(a) and § (4)(b),
    which requires that he was engaged in the medical use of marijuana during the conduct
    resulting in the specific charged offense(s).
    46
    To that end, factual findings are needed to determine Tuttle’s entitlement to
    immunity under § 4 for counts IV-VII. As a result, a new § 4 evidentiary hearing
    conforming to the holdings expressed in this opinion is necessary to determine Tuttle’s
    entitlement to § 4 immunity.
    2. SECTION 8 DEFENSE
    The lower courts properly concluded that Tuttle was not entitled to the § 8
    affirmative defense.     During an evidentiary hearing, Tuttle presented his registry
    identification card and the registry identification cards belonging to Michael Batke and
    Frank Colon. Lalonde, Batke, and Colon also testified at the hearing.
    Lalonde testified that he first came into contact with Tuttle through an unofficial
    internet site intended to match medical marijuana patients and caregivers.        He also
    testified that he was a registered qualifying patient and that he told Tuttle he was using
    marijuana to alleviate pain. Lalonde’s testimony, however, did not meet the first and
    third element of § 8(a), requiring his condition to be diagnosed in the course of a bona
    fide physician-patient relationship through which the physician found the condition
    suitable for the medical use of marijuana. Lalonde did not testify about how much
    marijuana he needed to treat his debilitating condition under § 8(a)(2) or if he engaged in
    the use of marijuana under § 8(a)(3) to treat his debilitating condition.
    Batke testified that he was a registered qualifying patient and that Tuttle was
    connected to him as a registered caregiver. Batke also testified that he would call Tuttle
    every time he needed marijuana. As a result, Tuttle provided Batke with approximately
    two ounces of marijuana a month. This does not speak to the amount of marijuana Batke
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    reasonably needed in order to treat his debilitating condition, only to the amount of
    marijuana actually provided. Nor did Batke establish that he had a bona fide relationship
    with a physician. Lastly, Colon testified that he was a registered qualifying patient, that
    he had a medical condition, and that he utilized Tuttle as a caregiver. Colon stated he
    would request between one and two ounces of marijuana each week from Tuttle. Colon
    did not testify that he received a full medical assessment in the course of a bona fide
    physician-patient relationship.
    Lalonde’s, Batke’s, and Colon’s testimony was deficient in establishing at least
    one element of § 8(a). Additionally, the patients’ testimony combined with their registry
    identification cards did not establish prima facie evidence under § 8(a). Therefore, Tuttle
    failed to present prima facie evidence of each element of § 8(a). The Court of Appeals
    correctly affirmed the trial court’s denial of Tuttle’s motion to dismiss under § 8 and
    correctly denied his request to present a § 8 defense at trial.
    IV. CONCLUSION
    In People v Hartwick, Docket No. 148444, we conclude that (1) the trial court
    must hold a new evidentiary hearing to determine Hartwick’s entitlement to immunity
    under § 4, and (2) Hartwick is not entitled to an affirmative defense under § 8.
    Accordingly, we affirm the judgment of the Court of Appeals in part, reverse in part, and
    remand to the trial court for proceedings not inconsistent with this opinion.
    In People v Tuttle, Docket No. 148971, we conclude that (1) the trial court must
    hold a new evidentiary hearing to determine Tuttle’s entitlement to immunity under § 4,
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    and (2) Tuttle is not entitled to an affirmative defense under § 8. Accordingly, we affirm
    the judgment of the Court of Appeals in part, reverse in part, and remand to the trial court
    for proceedings not inconsistent with this opinion.
    Brian K. Zahra
    Robert P. Young, Jr.
    Stephen J. Markman
    Mary Beth Kelly
    Bridget M. McCormack
    David F. Viviano
    Richard H. Bernstein
    49