People v. Colon ( 2007 )


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  •                        Docket No. 102003.
    IN THE
    SUPREME COURT
    OF
    THE STATE OF ILLINOIS
    THE PEOPLE OF THE STATE OF ILLINOIS, Appellant, v.
    DANNY COLON, Appellee.
    Opinion filed March 22, 2007.
    JUSTICE GARMAN delivered the judgment of the court, with
    opinion.
    Chief Justice Thomas and Justices Freeman, Fitzgerald, Kilbride,
    Karmeier, and Burke concurred in the judgment and opinion.
    OPINION
    Defendant, Danny Colon, pleaded guilty in the circuit court of
    Cook County to one count of aggravated unlawful use of a weapon
    (720 ILCS 5/24–1.6 (West 2002)) and was sentenced to 12 months’
    probation (730 ILCS 5/5–6–2(b)(2) (West 2002)). Subsequently, the
    State charged defendant with unlawful use of a weapon by a felon
    (720 ILCS 5/24–1.1 (West 2002)) and filed a petition to revoke his
    probation (730 ILCS 5/5–6–4 (West 2002)). At defense counsel’s
    request, the trial court consolidated defendant’s bench trial on the
    unlawful use of a weapon charge with his probation revocation
    hearing. The court found defendant not guilty of unlawful use of a
    weapon by a felon, but determined that he violated his probation. In
    a posttrial motion, defense counsel argued that requesting
    consolidation of the proceedings constituted ineffective assistance of
    counsel. The trial court denied the motion and sentenced defendant
    to 20 months’ imprisonment. Defendant appealed, and the appellate
    court reversed and remanded with one justice dissenting. No.
    1–04–2778 (unpublished order under Supreme Court Rule 23). For
    the reasons that follow, we reverse the judgment of the appellate court
    and affirm the judgment of the circuit court.
    BACKGROUND
    On February 19, 2004, defendant pleaded guilty to one count of
    aggravated unlawful use of a weapon (720 ILCS 5/24–1.6 (West
    2002)) and was sentenced to 12 months’ probation (730 ILCS
    5/5–6–2(b)(2) (West 2002)). On April 19, 2004, defendant was
    placed under arrest after a police officer allegedly saw him in
    possession of a handgun. He was subsequently charged with unlawful
    use of a weapon by a felon (720 ILCS 5/24–1.1 (West 2002)) and
    with violating his probation (730 ILCS 5/5–6–4 (West 2002)).
    When defendant appeared in court on July 8, 2004, defense
    counsel informed the court that defendant was prepared to proceed
    simultaneously with his bench trial on the unlawful use of a weapon
    charge and his probation revocation hearing. The State consented to
    consolidation, and the court allowed the parties to proceed.
    The State called Sergeant Charles Glynn and Officer Scott Blasz
    of the Chicago police department to testify. Sergeant Glynn stated
    that he had been a Chicago police officer for 18 years. On April 19,
    2004, at approximately 1:45 a.m., he was approaching a building at
    2803 North Kedzie Avenue in Chicago to use its porch for
    surveillance purposes. As Sergeant Glynn approached the building,
    he saw defendant standing in the building’s archway with a black,
    semiautomatic pistol in his right hand. Sergeant Glynn was
    approximately 10 feet away from defendant when he made this
    observation, and the surrounding area was well lit. While he could not
    see the pistol’s handle, he could see its barrel.
    According to Sergeant Glynn, when he saw the pistol, he drew his
    weapon, announced that he was a police officer, and ordered
    defendant to drop the pistol. Defendant turned and faced him and fled
    out of the archway onto Kedzie Avenue. Sergeant Glynn chased
    -2-
    defendant. While in pursuit, he described defendant and his direction
    of flight over the police radio.
    Defendant ran through a gangway and into an alley, at which
    point he hopped over a waist-high fence and entered another
    gangway. Sergeant Glynn was unable to pursue defendant over the
    fence, but he watched defendant enter the gangway from a distance
    of approximately 20 feet. Under the alley lighting, which extended
    into the gangway, he saw defendant hold up the gun and depress the
    magazine release. The magazine fell to the ground, and defendant
    continued to flee.
    Sergeant Glynn subsequently recovered the magazine and
    determined that it contained nine-millimeter rounds. Shortly
    thereafter, he was notified over the police radio that defendant had
    been apprehended. The pistol was never recovered.
    Officer Blasz testified that on April 19, 2004, he was in a squad
    car with his partner Mark DuBose when they received the description
    of defendant and his direction of flight over the police radio. After
    driving a short distance, they passed an alley and saw a person fitting
    the description they received over the radio. When the person,
    defendant, began to run, they cut him off with their squad car and
    placed him under arrest. At that point, Sergeant Glynn arrived on the
    scene.
    Following Officer Blasz’s testimony, the parties stipulated that
    defendant was convicted of aggravated unlawful use of a weapon on
    February 19, 2004. The State and the defense then rested.
    After brief closing arguments, the trial court reviewed the
    differing burdens of proof for the substantive charge and the
    probation violation. The court determined that the State had failed to
    prove beyond a reasonable doubt that defendant had committed the
    offense of unlawful use of a weapon by a felon, but that the State had
    met its burden of proving by a preponderance of the evidence that
    defendant had possessed firearm ammunition in violation of the terms
    of his probation. Accordingly, the court set a date to sentence
    defendant for his probation violation.
    On September 7, 2004, prior to sentencing, defense counsel
    presented an oral posttrial motion arguing that his request to
    consolidate the bench trial with the probation revocation hearing
    -3-
    constituted ineffective assistance of counsel. Defense counsel asserted
    that if he had not requested consolidation, the court’s probation
    violation finding would have been barred by principles of collateral
    estoppel and double jeopardy, because it would have been
    impermissible to relitigate the same issue of fact decided in a bench
    trial on the substantive charge at a subsequent probation revocation
    hearing.
    During the course of the hearing on defendant’s posttrial motion,
    the following colloquy occurred:
    “COURT: Is it not the State’s election as to whether they
    want to proceed–you make that argument as if you had the
    benefit of choosing to go to the underlying case or to the
    probation violation. And, in fact, you do not. It’s the State’s
    choice.
    DEFENSE COUNSEL: But in this case, the State choose
    [sic] to go on the main case, and I said[,] your Honor, why
    don’t we just try them together. We could get a transcript and
    see that’s what happened. That’s what happened.
    COURT: Did the State elect on the underlying case?
    STATE: I think we had–let me check. The State had
    elected on the case in chief.
    COURT: I agree with you. And we don’t have the
    transcript because nobody got it?
    DEFENSE COUNSEL: As to that portion of it, nobody
    got it.”
    Ultimately, the court denied defendant’s posttrial motion and
    sentenced him to 20 months’ imprisonment.
    Defendant appealed, and the appellate court reversed the
    judgment of the circuit court with one justice dissenting. No.
    1–04–2778 (unpublished order under Supreme Court Rule 23).
    Initially, the appellate court majority rejected defendant’s argument
    that the evidence presented at trial was insufficient to prove that he
    violated his probation by unlawfully possessing firearm ammunition
    as a felon. The majority held that, based on the observations of
    Sergeant Glynn, an 18-year veteran of the Chicago police department,
    it was reasonable for the trial court to infer that the nine-millimeter
    rounds ejected from the semiautomatic pistol defendant was carrying
    -4-
    were “firearm ammunition” as defined by section 1.1 of the Firearm
    Owners Identification Card Act (430 ILCS 65/1.1 (West 2002)).
    Next, the majority rejected defendant’s argument that the trial
    court’s finding that he violated his probation was barred by principles
    of collateral estoppel and double jeopardy based on his acquittal of
    the substantive charge. Citing this court’s decision in People v.
    Grayson, 
    58 Ill. 2d 260
    , 265 (1974), the court noted that Grayson
    prohibits the relitigation of an issue in a probation revocation hearing
    that has been litigated in a previous trial, regardless of the differences
    in the burdens of proof in the two proceedings. The court observed,
    however, that where a defendant’s trial and probation revocation
    hearing are consolidated, concerns of collateral estoppel and double
    jeopardy do not arise, and the defendant may be acquitted of the
    substantive charge but still be found to have violated the terms of his
    probation. Accordingly, the court held that because defendant’s trial
    and probation revocation hearing were consolidated, the trial court’s
    finding that defendant violated his probation was not barred by
    principles of collateral estoppel and double jeopardy.
    Finally, the appellate court addressed defendant’s argument that
    defense counsel provided ineffective assistance of counsel by
    requesting consolidation of the bench trial and probation revocation
    hearing. The court noted that if defendant had been acquitted of the
    substantive charge in an earlier, separate proceeding, instead of in a
    consolidated proceeding, Grayson would have barred the trial court’s
    violation-of-probation finding. Accordingly, the court determined that
    there was a reasonable probability that, but for defense counsel’s
    request for consolidation, the outcome would have differed for
    defendant. The court acknowledged that there was nothing in the
    record to indicate that defense counsel was aware prior to his request
    for consolidation that the State had elected to try defendant on the
    substantive charge before proceeding with his probation revocation
    hearing. However, the court found this fact immaterial to the
    ineffectiveness inquiry, reasoning that the possibility the State would
    have proceeded first on the substantive charge was sufficient to
    support defendant’s ineffective assistance of counsel claim. In
    addition, the court declined to characterize defense counsel’s decision
    to consolidate the proceedings as a matter of trial strategy. In light of
    these considerations, the court concluded that defense counsel’s
    -5-
    request to consolidate the proceedings amounted to ineffective
    assistance of counsel, because it fell below an objective standard of
    reasonableness and was prejudicial to defendant. The court reversed
    the judgment of the trial court and remanded the cause for a new
    probation revocation hearing.
    In dissent, Presiding Justice Quinn concluded that defense
    counsel’s request for a consolidated proceeding was a matter of trial
    strategy. No. 1–04–2778 (unpublished order under Supreme Court
    Rule 23) (Quinn, P.J., dissenting). In addition, he criticized the
    majority for relying on a poorly formulated rule of decision – i.e., that
    “any defense attorney who requests a consolidated hearing will
    receive a second bite at the apple upon appeal of any finding of
    violation of probation as all such requests constitute per se ineffective
    assistance of counsel.” (Emphasis in original.) Justice Quinn
    characterized this rule as “clearly wrong.”
    The State filed a petition for leave to appeal with this court, which
    we allowed. 210 Ill. 2d R. 315.
    ANALYSIS
    The State challenges the appellate court’s determination that
    defense counsel provided ineffective assistance by requesting the
    consolidation of defendant’s bench trial with his probation revocation
    hearing. Defendant maintains that the request for consolidation
    constituted ineffective assistance and argues in the alternative that the
    evidence presented to the trial court was insufficient to prove that he
    violated his probation. We first address whether defendant was
    denied the effective assistance of counsel.
    I. Ineffective Assistance of Counsel
    In determining whether a defendant was denied the effective
    assistance of counsel, we apply the familiar two-prong test set forth
    in Strickland v. Washington, 
    466 U.S. 668
    , 
    80 L. Ed. 2d 674
    , 104 S.
    Ct. 2052 (1984), and adopted by this court in People v. Albanese, 
    104 Ill. 2d 504
    (1984). To prevail on a claim of ineffective assistance of
    counsel, a defendant must show both that counsel’s performance was
    deficient and that the deficient performance prejudiced the defendant.
    
    Strickland, 466 U.S. at 687
    , 80 L. Ed. 2d at 
    693, 104 S. Ct. at 2064
    -6-
    (1984). More specifically, the defendant must demonstrate that
    counsel’s performance was objectively unreasonable under prevailing
    professional norms and that there is a “reasonable probability that, but
    for counsel’s unprofessional errors, the result of the proceeding would
    have been different.” 
    Strickland, 466 U.S. at 694
    , 80 L. Ed. 2d at 
    698, 104 S. Ct. at 2068
    . A reasonable probability that the result would
    have been different is a probability sufficient to undermine
    confidence in the outcome of the proceeding. 
    Strickland, 466 U.S. at 694
    , 80 L. Ed. 2d at 
    698, 104 S. Ct. at 2068
    . The failure to satisfy
    either prong of the Strickland test precludes a finding of ineffective
    assistance of counsel. 
    Strickland, 466 U.S. at 697
    , 80 L. Ed. 2d at
    
    699, 104 S. Ct. at 2069
    .
    The State articulates two reasons why defendant was not denied
    the effective assistance of counsel. Initially, the State claims that
    defense counsel’s decision to request the consolidation of the bench
    trial and the probation hearing was a valid strategic choice. The State
    points out that, pursuant to Strickland, a defendant must overcome a
    strong presumption that defense counsel’s actions were motivated by
    strategic considerations. Here, argues the State, there were three
    possible outcomes to the consolidated proceeding. First, defendant
    could have been acquitted of the substantive charge and found not to
    have violated his probation, in which case he would have suffered no
    prejudice as a result of the consolidation and would have benefitted
    from the quicker, and possibly less costly, disposition of the
    proceedings. Second, defendant could have been convicted of the
    substantive charge and found to have violated his probation, in which
    case he also would have suffered no prejudice and would have
    benefitted in the same manner described above. Third, as occurred in
    the instant case, defendant could have been acquitted of the
    substantive charge but found to have violated his probation. The State
    argues that the latter scenario, “where the evidence falls into the
    interstices between preponderance and beyond a reasonable doubt,”
    is comparatively rare and difficult to reasonably anticipate. Thus, “in
    terms of percentages ***, a defense counsel whose client is facing
    both substantive and [violation-of-probation] charges has clear
    strategic considerations in favor of consolidation.”
    Next, the State contends that defendant cannot demonstrate that
    he was prejudiced by the consolidation of the bench trial and the
    -7-
    probation revocation hearing. According to the State, to show
    prejudice, defendant must demonstrate that if he had objected to
    consolidation, the trial court would likely have sustained his
    objection. The State reasons that defendant cannot make such a
    showing because there is nothing inherent in consolidation itself that
    is prejudicial to a defendant, as principles of double jeopardy and
    collateral estoppel have no application in the context of a
    consolidated proceeding. Moreover, even if defense counsel had
    objected to consolidation and the trial court had sustained his
    objection, the State could still have elected to proceed with the
    probation revocation hearing before the bench trial on the substantive
    charge. In that case, the finding that defendant violated his probation
    would not have been problematic.
    In addition to arguing that defendant cannot meet either prong of
    the Strickland test, the State asserts that the appellate court’s rationale
    in this case invites defense counsel to seek out consolidation, either
    by requesting it or by not objecting to it, and then argue their own
    ineffectiveness if the defendant is acquitted of the substantive charge
    but found to have committed a probation violation. The State suggests
    that, under the approach taken by the appellate court, defense counsel
    has a strong incentive to intentionally provide ineffective assistance
    of counsel, which “perverts the salutary principles established in
    Strickland.”
    Alternatively, the State urges us to overrule People v. Grayson, 
    58 Ill. 2d 260
    , which makes it impermissible for the State to proceed
    with a probation revocation hearing after a defendant has been
    acquitted of the substantive charge in a separate trial. The State
    argues that Grayson is out of step with more recent United States
    Supreme Court decisions that clarify that an acquittal in a criminal
    case does not preclude the government from relitigating an issue in
    a subsequent action governed by a lower standard of proof. According
    to the State, these decisions call into question the continuing viability
    of Grayson.
    In response, defendant, represented by the same counsel who
    represented him at trial and before the appellate court, emphasizes
    that if defense counsel had understood the applicable law, he would
    not have requested consolidation of the bench trial with the probation
    revocation hearing. Defendant’s brief candidly states that “[a]lthough
    -8-
    counsel is very experienced and usually fully researches controlling
    issues, here, he did not do sufficient research, and hence, he made an
    error.” Specifically, defense counsel “did not realize that Grayson
    only applied when the case-in-chief and the violation of probation
    [are] tried separately and did not control where the cases are tried
    together.” Defendant maintains that defense counsel knew the State
    intended to proceed with its case in chief before proceeding with the
    probation revocation hearing. In light of this fact, and considering that
    defendant was ultimately acquitted of the substantive charge but
    found to have violated his probation, defendant claims that defense
    counsel acted ineffectively in requesting consolidation of the
    proceedings.
    Defendant further argues that the appellate court’s rationale does
    not encourage the purposeful injection of error into a case by defense
    counsel. According to defendant, it is well known that lawyers go to
    great lengths to avoid accusations of ineffectiveness, and this in itself
    is an adequate safeguard against the intentional ineffectiveness
    posited by the State.
    We first address the State’s invitation to overrule People v.
    Grayson, as the rationale of Grayson lies at the root of defendant’s
    ineffective assistance of counsel claim. In Grayson, the defendant
    pleaded guilty to armed robbery and was sentenced to five years’
    probation. 
    Grayson, 58 Ill. 2d at 261
    . Subsequently, he was indicted
    for another armed robbery and acquitted in a bench trial. 
    Grayson, 58 Ill. 2d at 261
    . The State then filed a petition to revoke the defendant’s
    probation, alleging the second armed robbery as the basis for the
    revocation. 
    Grayson, 58 Ill. 2d at 262
    . Based on evidence that was
    substantially the same as the evidence presented at the bench trial, a
    different trial court determined that the defendant violated his
    probation and sentenced him to a term of three to eight years’
    imprisonment on the original armed robbery conviction. 
    Grayson, 58 Ill. 2d at 262
    . The appellate court affirmed. 
    Grayson, 58 Ill. 2d at 262
    .
    This court reversed the judgments of the appellate court and the trial
    court. 
    Grayson, 58 Ill. 2d at 265
    .
    In arguing that his probation revocation should be reversed, the
    defendant relied on Ashe v. Swenson, 
    397 U.S. 436
    , 
    25 L. Ed. 2d 469
    ,
    
    90 S. Ct. 1189
    (1970). There, the United States Supreme Court
    determined that it was a violation of the principle of collateral
    -9-
    estoppel embodied in the fifth amendment guarantee against double
    jeopardy to try the defendant for the separate armed robberies of two
    participants in a poker game. 
    Grayson, 58 Ill. 2d at 262
    -63, citing
    Ashe v. 
    Swenson, 397 U.S. at 445-47
    , 25 L. Ed. 2d at 476-77, 90 S.
    Ct. at 1195-96. The Court reasoned that, based on the evidence
    presented, the jury’s verdict in the defendant’s first trial amounted to
    a finding that the defendant was not one of the robbers. 
    Grayson, 58 Ill. 2d at 262
    -63, citing Ashe v. 
    Swenson, 397 U.S. at 445-47
    , 25 L.
    Ed. 2d at 
    476-77, 90 S. Ct. at 1195-96
    .
    This court accepted the defendant’s contention that, as in Ashe,
    the defendant’s initial acquittal on the charge of armed robbery
    amounted to a determination that he was not one of the robbers.
    
    Grayson, 58 Ill. 2d at 265
    . The court acknowledged that, in a criminal
    trial, the State must prove the defendant guilty beyond a reasonable
    doubt, while in a probation revocation hearing, the State must only
    prove the probation violation by a preponderance of the evidence.
    
    Grayson, 58 Ill. 2d at 264
    . However, the court was “not persuaded
    that the difference in the burden of proof between a criminal trial and
    a probation revocation proceeding should dictate the result” of the
    case (
    Grayson, 58 Ill. 2d at 264
    ), as “those differences cannot fairly
    serve to permit relitigation of the identical issue upon the same
    evidence” (
    Grayson, 58 Ill. 2d at 265
    ). The court noted its concern
    that “[a]lthough proceedings may be civil in form, they may be
    criminal in nature [citation], and the individual facing probation
    revocation may lose his liberty just as swiftly and surely as a
    defendant in a criminal case.” 
    Grayson, 58 Ill. 2d at 265
    . Applying
    the rationale of Ashe, the court concluded that “[o]nce the ultimate
    and only disputed fact of identity had been determined by a final and
    valid judgment, the State could not constitutionally hale defendant
    before a new court in a criminal proceeding or a probation revocation
    proceeding and litigate that issue again.” 
    Grayson, 58 Ill. 2d at 265
    ,
    citing 
    Ashe, 397 U.S. at 446
    , 25 L. Ed. 2d at 
    477, 90 S. Ct. at 1195
    .
    After this court decided Grayson, the appellate court was
    presented with the question of whether Grayson’s rationale was
    applicable where the substantive charge against a defendant and the
    defendant’s alleged probation violation were addressed in a single
    proceeding. See In re N.R.L., 
    200 Ill. App. 3d 820
    (1990); People v.
    Motta, 
    223 Ill. App. 3d 182
    (1991).
    -10-
    In N.R.L., the appellate court held that principles of double
    jeopardy and collateral estoppel did not bar the trial court from
    determining in the same proceeding that the evidence was insufficient
    to adjudicate the minor respondent delinquent for committing
    aggravated battery but sufficient to find that the respondent violated
    the terms of his probation by committing aggravated battery. 
    N.R.L., 200 Ill. App. 3d at 824-25
    . In distinguishing Grayson, the appellate
    court noted that, in Grayson, “the State attempted to prove at a
    second proceeding what it had failed to prove at the first proceeding,”
    whereas, “[i]n the case at bar, there simply was no second attempt to
    prove the facts.” 
    N.R.L., 200 Ill. App. 3d at 826
    .
    Motta, decided shortly after N.R.L., rejected the defendant’s
    argument that once a jury determined he was entrapped, and was
    therefore not guilty of possession of a controlled substance with the
    intent to deliver, the doctrines of double jeopardy and collateral
    estoppel barred the trial court from finding that he violated his
    probation. 
    Motta, 223 Ill. App. 3d at 184
    . Citing N.R.L., the appellate
    court stated that “[w]here the criminal trial and the revocation hearing
    are held simultaneously, double jeopardy and collateral estoppel
    concerns do not arise and the defendant may be acquitted of the
    criminal charge but still be found to have violated the terms of his
    probation.” 
    Motta, 223 Ill. App. 3d at 184
    . The court determined that
    Grayson was inapplicable, because, there, the probation revocation
    hearing took place after the jury had acquitted the defendant of the
    substantive charge. 
    Motta, 223 Ill. App. 3d at 184
    .
    The appellate court’s interpretation of Grayson in N.R.L. and
    Motta set the stage for the type of ineffective assistance of counsel
    claim at issue in this case, which was first addressed in People v.
    Porter, 
    241 Ill. App. 3d 116
    (1993). In Porter, the defendant pleaded
    guilty to unlawful possession of heroin with intent to deliver and was
    sentenced to 30 months’ probation. 
    Porter, 241 Ill. App. 3d at 116
    .
    Subsequently, he was charged with committing the offense of
    unlawful delivery of cocaine within 1,000 feet of school property, and
    the State filed a petition to revoke his probation. Porter, 
    241 Ill. App. 3d
    at 116. When the State requested that the jury trial on the
    substantive charge and the hearing on the petition to revoke probation
    be heard at the same time, defense counsel did not object. 
    Porter, 241 Ill. App. 3d at 116
    .
    -11-
    Following the defendant’s trial, the jury retired to deliberate, and
    the court indicated it would rule on the petition to revoke after the
    jury delivered its verdict. 
    Porter, 241 Ill. App. 3d at 116
    -17. The jury
    returned a verdict of not guilty for the offense of unlawful delivery of
    a controlled substance within 1,000 feet of school property. Porter,
    
    241 Ill. App. 3d
    at 117. After the jury was excused, the trial court
    found that the State had proved by a preponderance of the evidence
    that the defendant violated the terms of his probation. Porter, 241 Ill.
    App. 3d at 117.
    On appeal, the defendant argued that his trial counsel was
    ineffective for failing to object to the consolidation of the jury trial
    with the probation revocation hearing. Porter, 
    241 Ill. App. 3d
    at 117.
    The appellate court agreed and reversed the order of the trial court
    revoking the defendant’s probation. Porter, 
    241 Ill. App. 3d
    at 119.
    According to the appellate court, the jury must have determined
    that the defendant did not deliver the cocaine, because that was the
    only material issue of fact in dispute. Porter, 
    241 Ill. App. 3d
    at 118.
    Thus, the trial court’s determination that the defendant did deliver the
    cocaine amounted to a “differing determination on the same issue of
    ultimate fact.” Porter, 
    241 Ill. App. 3d
    at 118. Applying Grayson, the
    appellate court reasoned that “had the instant defendant been
    acquitted of the underlying offense first, the proceeding concerning
    the probation revocation would have been barred by the principle of
    collateral estoppel.” In light of this consideration, if defense counsel
    had objected to the consolidation of the two proceedings, there was
    a reasonable probability that the result would have differed. Porter,
    
    241 Ill. App. 3d
    at 118. The appellate court also rejected the State’s
    argument that defense counsel’s decision not to object was a matter
    of trial strategy. Porter, 
    241 Ill. App. 3d
    at 118. Accordingly, the
    court concluded that defense counsel was ineffective. Porter, 241 Ill.
    App. 3d at 118.
    The appellate court was again presented with a Grayson-based
    ineffective assistance of counsel claim in In re A.V., 
    285 Ill. App. 3d 470
    (1996). There, under analogous circumstances, a divided
    appellate panel held that defense counsel, consisting of two law
    students and two supervising attorneys from a law school clinic,
    provided ineffective assistance in failing to object to the State’s
    -12-
    motion to consolidate the minor respondent’s delinquency and
    probation revocation hearings. 
    A.V., 285 Ill. App. 3d at 471
    .
    In A.V., the respondent was adjudicated delinquent and sentenced
    to two years’ probation for trespassing into and possessing a stolen
    vehicle. 
    A.V., 285 Ill. App. 3d at 471
    . Subsequently, he was charged
    in a delinquency petition with five criminal offenses arising from a
    shooting incident, and the State filed a petition to revoke his
    probation. 
    A.V., 285 Ill. App. 3d at 471
    . The trial court granted the
    State’s motion to consolidate the hearings on the delinquency petition
    and the probation violation without objection from defense counsel.
    
    A.V., 285 Ill. App. 3d at 471
    . Subsequently, the court found the
    respondent not guilty of the charges alleged in the delinquency
    petition, but found that the State had proved by a preponderance of
    the evidence that the respondent violated the terms of his probation.
    
    A.V., 285 Ill. App. 3d at 471
    .
    On appeal, the respondent argued that he received ineffective
    assistance of counsel when defense counsel failed to object to the
    consolidated hearing. 
    A.V., 285 Ill. App. 3d at 472
    . The respondent
    relied on Porter, which a majority of the appellate court found
    persuasive. 
    A.V., 285 Ill. App. 3d at 472
    -73. The majority concluded
    that defense counsel’s failure to object to consolidation fell below an
    objective standard of reasonableness. 
    A.V., 285 Ill. App. 3d at 473
    . In
    that regard, the majority emphasized that defense counsel (1)
    admitted they were unaware of the “preponderance of the evidence”
    burden of proof in a probation revocation proceeding, (2) conceded
    they would have called additional alibi witnesses and called the
    respondent to testify on his own behalf if they had been aware of the
    burden of proof, and (3) failed to call additional witnesses to
    corroborate the testimony of the respondent’s father. A.V., 285 Ill.
    App. 3d at 473. In addition, the majority determined that there was a
    reasonable probability that, but for defense counsel’s performance,
    the result would have been different. 
    A.V., 285 Ill. App. 3d at 475
    .
    The majority explained that if defense counsel had objected to
    consolidation, the State would have had to elect to proceed on either
    the delinquency petition or the petition for revocation of probation.
    
    A.V., 285 Ill. App. 3d at 475
    . If the State had elected to proceed on the
    former and the respondent was acquitted, as he was in the
    consolidated proceeding, then, pursuant to Grayson, the State would
    -13-
    have been prevented from relitigating the same issues in a later
    probation revocation proceeding. 
    A.V., 285 Ill. App. 3d at 475
    . The
    majority rejected the State’s argument that it could simply have
    elected to proceed first on the petition to revoke the respondent’s
    probation, in which case it would not have been precluded from
    proceeding against the respondent on the delinquency petition. 
    A.V., 285 Ill. App. 3d at 475
    . According to the majority, the State’s
    argument assumed in hindsight that it would have elected to proceed
    first with the probation revocation hearing, and the majority was
    unwilling to accept this assumption, given that “[o]ne could just as
    easily argue to the contrary and reach an opposite conclusion.” 
    A.V., 285 Ill. App. 3d at 475
    . For these reasons, the majority concluded that
    the respondent received ineffective assistance of counsel and
    remanded the cause for a new hearing. 
    A.V., 285 Ill. App. 3d at 475
    .
    The dissent disagreed with the majority’s reliance on Porter,
    opining that the Porter court did not intend “to set the stage for
    purposeful stratagems that would degrade the salutary principles
    established in Strickland.” 
    A.V., 285 Ill. App. 3d at 476
    (Wolfson, J.,
    dissenting). Reviewing the transcript of defense counsel’s closing
    arguments, the dissent concluded that counsel’s comments did not
    reflect a lack of understanding about the standards of proof that
    applied to the consolidated charges. 
    A.V., 285 Ill. App. 3d at 477
    (Wolfson, J., dissenting). Rather, it appeared that defense counsel’s
    strategy was to succeed on all the charges in a single proceeding.
    
    A.V., 285 Ill. App. 3d at 477
    (Wolfson, J., dissenting). The dissent
    reasoned that, by following Porter in the instant case, the majority
    was “saying that defense counsel has an affirmative duty to object to
    consolidation in all instances or face a successful claim of
    ineffectiveness,” in which case “[a] purposeful failure to object would
    plant reversible error in any consolidated hearing.” A.V., 
    285 Ill. App. 3d
    at 477 (Wolfson, J., dissenting). The dissent cautioned that “a
    defense lawyer would not be motivated to object to consolidation if
    assured his or her silence meant that no conviction could stand.” 
    A.V., 285 Ill. App. 3d at 477
    (Wolfson, J., dissenting).
    This brings us to the present case, wherein the majority relied on
    Porter and A.V. in holding that defense counsel’s request to
    consolidate defendant’s bench trial with his probation revocation
    hearing fell below an objective standard of reasonableness and
    -14-
    prejudiced defendant. No. 1–04–2778 (unpublished order under
    Supreme Court Rule 23). Obviously, if Grayson is overruled, then the
    basis for defendant’s ineffective assistance of counsel claim no longer
    exists, because without Grayson, defendant has no support for the
    position that the State would have been precluded from proceeding
    against him on the probation revocation petition if the revocation
    hearing had not been consolidated with the bench trial on the
    substantive charge. Whether Grayson should be overruled is a
    question that implicates the doctrine of stare decisis.
    The doctrine of stare decisis “ ‘expresses the policy of the courts
    to stand by precedents and not to disturb settled points.’ ” People v.
    Caballes, 
    221 Ill. 2d 282
    , 313 (2006), quoting Neff v. George, 
    364 Ill. 306
    , 308-09 (1936), overruled on other grounds by Tuthill v.
    Rendelman, 
    387 Ill. 321
    (1944). In other words, “ ‘a question once
    deliberately examined and decided should be considered as settled
    and closed to further argument’ ” (Wakulich v. Mraz, 
    203 Ill. 2d 223
    ,
    230 (2003), quoting Prall v. Burckhartt, 
    299 Ill. 19
    , 41 (1921)), so
    that the law will not change erratically, but will develop in a
    principled, intelligible fashion (People v. Mitchell, 
    189 Ill. 2d 312
    ,
    338 (2000)).
    Stare decisis, however, is not an “inexorable command.” People
    v. Jones, 
    207 Ill. 2d 122
    , 134 (2003), quoting Payne v. Tennessee,
    
    501 U.S. 808
    , 828, 
    115 L. Ed. 2d 720
    , 737, 
    111 S. Ct. 2597
    , 2609-10
    (1991). If it is clear a court has made a mistake, it will not decline to
    correct it, even if the mistake has been reasserted and acquiesced in
    for many years. People v. Boreman, 
    401 Ill. 566
    , 571 (1948). That
    said, this court will not depart from precedent merely because it might
    have decided otherwise if the question were a new one. People v.
    Lopez, 
    207 Ill. 2d 449
    , 459 (2003). As we recently reiterated, any
    departure from stare decisis must be “ ‘specially justified.’ ” People
    v. Suarez, No. 100499, slip op. at 10 (January 19, 2007), quoting
    People v. Sharpe, 
    216 Ill. 2d 481
    , 520 (2005). Thus, prior decisions
    should not be overruled absent “good cause” or “compelling reasons.”
    Suarez, slip op. at 10, quoting 
    Sharpe, 216 Ill. 2d at 520
    . In general,
    a settled rule of law that does not contravene a statute or
    constitutional principle should be followed unless doing so is likely
    to result in serious detriment prejudicial to public interests. Suarez,
    slip op. at 10, quoting 
    Sharpe, 216 Ill. 2d at 520
    . Good cause to
    -15-
    depart from stare decisis also exists when governing decisions are
    unworkable or badly reasoned. 
    Sharpe, 216 Ill. 2d at 520
    .
    At the outset, we observe that we do not consider the continuing
    viability of Grayson on a blank slate. This court explicitly called
    Grayson into question in In re Nau, 
    153 Ill. 2d 406
    (1992).
    In Nau, this court affirmed an order involuntarily committing the
    respondent to a mental-health facility and an order continuing the
    respondent’s involuntary commitment. 
    Nau, 153 Ill. 2d at 431
    . On
    cross-appeal, the respondent, who was acquitted of the murder of his
    stepbrother at a discharge hearing prior to the commitment hearings,
    argued that the trial court erred in allowing evidence and argument
    regarding the respondent’s stepbrother’s death at the commitment
    hearings. 
    Nau, 153 Ill. 2d at 423
    . Specifically, the respondent argued
    that his acquittal on the murder charge collaterally estopped the State
    from presenting evidence or arguing at the commitment hearings that
    the respondent killed his stepbrother. 
    Nau, 153 Ill. 2d at 424
    .
    In rejecting the respondent’s argument, this court relied on
    Dowling v. United States, 
    493 U.S. 342
    , 
    107 L. Ed. 2d 708
    , 
    110 S. Ct. 668
    (1990), and People v. Jackson, 
    149 Ill. 2d 540
    (1992). In
    Dowling, during the defendant’s trial on robbery charges, the
    government introduced the testimony of a witness who identified the
    defendant as the perpetrator of an unrelated robbery. 
    Dowling, 493 U.S. at 344-45
    , 107 L. Ed. 2d at 
    715, 110 S. Ct. at 670
    . The defendant
    had previously been acquitted of that robbery charge. 
    Dowling, 493 U.S. at 345
    , 107 L. Ed. 2d at 
    715, 110 S. Ct. at 670
    . He argued that
    his acquittal collaterally estopped the prosecution from introducing
    the disputed testimony. 
    Dowling, 493 U.S. at 348
    , 107 L. Ed. 2d at
    
    717, 110 S. Ct. at 672
    . The Supreme Court held that collateral
    estoppel was inapplicable, reasoning that because the admissibility of
    the witness’ testimony was governed by a lower standard of proof
    than beyond a reasonable doubt, the government was not precluded
    from relitigating the issue of the defendant’s involvement in the other
    robbery. 
    Dowling, 493 U.S. at 348
    -49, 107 L. Ed. 2d at 
    717-18, 110 S. Ct. at 672
    .
    This court applied the reasoning of Dowling in Jackson. There,
    the defendant argued that he was entitled to a new sentencing hearing
    because he was denied due process at his original sentencing hearing
    when the trial court considered charges of which the defendant was
    -16-
    later acquitted. 
    Jackson, 149 Ill. 2d at 547
    . This court held that the
    subsequent acquittal did not preclude the State from introducing
    evidence at the defendant’s sentencing hearing that the defendant
    committed the offense of which he was acquitted, as the sentencing
    hearing involved a lower burden of proof. 
    Jackson, 149 Ill. 2d at 547
    -
    51. In so holding, the court discussed Dowling with approval, noting
    that the Supreme Court had decided that evidence that resulted in a
    prior acquittal could be used for limited purposes in the guilt phase
    of trial for another offense, since the government is not precluded
    from “ ‘relitigating an issue when it is presented in a subsequent
    action governed by a lower standard of proof.’ ” 
    Jackson, 149 Ill. 2d at 550
    , quoting 
    Dowling, 493 U.S. at 349
    , 107 L. Ed. 2d at 
    718, 110 S. Ct. at 672
    . Ultimately, the court found it immaterial that the
    defendant’s acquittal came after his sentencing hearing, because even
    though the trial court could not have known at the time of sentencing
    that the respondent would be acquitted, the court did know that he
    had not yet been convicted. 
    Jackson, 149 Ill. 2d at 550
    -51.
    In Nau, this court concluded that Jackson and Dowling were
    dispositive of the issue raised by the respondent. 
    Nau, 153 Ill. 2d at 426
    . The court noted that the burden of proof at the discharge hearing
    where the respondent was acquitted of his stepbrother’s murder was
    beyond a reasonable doubt. 
    Nau, 153 Ill. 2d at 426
    . Thus, his acquittal
    established only that the State was unable to prove his commission of
    the crime beyond a reasonable doubt. 
    Nau, 153 Ill. 2d at 426
    . At the
    respondent’s civil commitment hearings, the State merely sought to
    use the testimony regarding the respondent’s participation in his
    stepbrother’s murder as evidence of the respondent’s eligibility for
    involuntary admission. 
    Nau, 153 Ill. 2d at 426
    . The State’s only
    burden at the commitment hearings was to establish by clear and
    convincing evidence that the respondent was a person subject to
    involuntary admission. 
    Nau, 153 Ill. 2d at 426
    . Because the trial court
    did not have to find beyond a reasonable doubt–or, for that matter, by
    any standard of proof–that the respondent murdered his stepbrother
    in order to find him subject to involuntary admission, this court
    concluded that it was proper for the trial court to consider evidence
    regarding the respondent’s possible commission of his stepbrother’s
    murder as evidence of his eligibility for commitment. 
    Nau, 153 Ill. 2d at 426
    -27.
    -17-
    After upholding the trial court’s consideration of the murder-
    related evidence, this court went on to reject the respondent’s reliance
    on Grayson as support for his claim that the evidence was improperly
    considered. 
    Nau, 153 Ill. 2d at 427
    . The court summarized Grayson
    (
    Nau, 153 Ill. 2d at 427
    ), and then commented as follows:
    “In the instant case, we are concerned only with whether
    an acquittal on a criminal charge precludes the use of
    evidence of that crime at a subsequent civil commitment
    hearing. We have determined that, under Jackson and
    Dowling, this subsequent use of the evidence was proper.
    While we question the viability of Grayson in light of
    Jackson, we are not now presented with the specific question
    addressed in Grayson: whether a crime of which a defendant
    has been acquitted may nonetheless constitute the basis for a
    probation revocation. Thus, we will not herein decide whether
    Grayson remains valid today. However, we do determine that
    Jackson, and not Grayson, controls the instant case.” 
    Nau, 153 Ill. 2d at 427
    -28.
    Accordingly, the court held that the respondent’s acquittal of his
    stepbrother’s murder did not collaterally estop the State from
    introducing evidence of the murder at the respondent’s civil
    commitment hearings. 
    Nau, 153 Ill. 2d at 428
    .
    Unlike Nau, this case does present us with the specific question
    addressed in Grayson, albeit in the context of an ineffective
    assistance of counsel claim. Here, defendant was acquitted of the
    offense of unlawful use of a weapon by a felon but found to have
    violated his probation on the basis of committing that offense. Thus,
    the reservations this court expressed in Nau over addressing the
    viability of Grayson are not present here.
    Nau provides a useful point of departure for our discussion of
    whether to overrule Grayson because it brings to light the problematic
    nature of Grayson’s doctrinal underpinnings. In relying on Dowling
    and Jackson, Nau holds to the principle that an acquittal in a criminal
    trial does not preclude the government from relitigating an issue in a
    subsequent action governed by a lower standard of proof. See 
    Nau, 153 Ill. 2d at 426
    -27. This principle emerged from the Supreme
    Court’s decision in Dowling as a limitation on its holding in Ashe v.
    Swenson that the double jeopardy clause of the fifth amendment
    -18-
    incorporates the doctrine of collateral estoppel. See 
    Dowling, 493 U.S. at 347-49
    , 107 L. Ed. 2d at 
    717-18, 110 S. Ct. at 671-72
    . As the
    Court explained in Dowling:
    “[U]nlike the situation in Ashe v. Swenson, the [defendant’s]
    prior acquittal did not determine an ultimate issue in the
    present case. This much [defendant] concedes, and we decline
    to extend Ashe v. Swenson and the collateral-estoppel
    component of the Double Jeopardy Clause to exclude in all
    circumstances, as [defendant] would have it, relevant and
    probative evidence that is otherwise admissible under the
    Rules of Evidence simply because it relates to alleged
    criminal conduct for which a defendant has been acquitted.”
    
    Dowling, 493 U.S. at 348
    , 107 L. Ed. 2d at 
    717, 110 S. Ct. at 672
    .
    As further support for not extending Ashe, the Court in Dowling
    discussed two cases decided after Ashe that involved civil forfeiture
    proceedings initiated after criminal acquittals. 
    Dowling, 493 U.S. at 349
    , 107 L. Ed. 2d at 
    718, 110 S. Ct. at 672
    -73. In United States v.
    One Assortment of 89 Firearms, 
    465 U.S. 354
    , 361-62, 
    79 L. Ed. 2d 361
    , 368, 
    104 S. Ct. 1099
    , 1104 (1984), the Court held that a gun
    owner’s acquittal on a charge of dealing firearms without a license
    did not preclude a subsequent in rem forfeiture proceeding against
    those firearms, because even though forfeiture was only appropriate
    if the jury in the forfeiture proceeding concluded that the defendant
    had committed the underlying offense, the government only had to
    prove its forfeiture case by a preponderance of the evidence.
    Likewise, in One Lot Emerald Cut Stones v. United States, 
    409 U.S. 232
    , 234-35, 
    34 L. Ed. 2d 438
    , 441-42, 
    93 S. Ct. 489
    , 491-92 (1972),
    the Court held that the double jeopardy clause did not bar a forfeiture
    action subsequent to acquittal on the underlying offense because the
    difference between the burden of proof in a criminal case and the
    burden of proof in the forfeiture proceeding precluded application of
    the doctrine of collateral estoppel.
    After Dowling was decided, the Court applied Dowling’s rationale
    in United States v. Watts, 
    519 U.S. 148
    , 
    136 L. Ed. 2d 554
    , 
    117 S. Ct. 633
    (1997). In Watts, two sentencing courts considered conduct of
    which the defendants had been acquitted in enhancing the defendants’
    sentences. 
    Watts, 519 U.S. at 149-51
    , 136 L. Ed. 2d at 560-61, 117 S.
    -19-
    Ct. at 634-35. After concluding that the Federal Sentencing
    Guidelines permitted consideration of this conduct 
    (Watts, 519 U.S. at 151-54
    , 136 L. Ed. 2d at 
    561-63, 117 S. Ct. at 635-36
    ), the Court
    determined that the acquittals had no preclusive effect, because, under
    the Guidelines, facts relevant to sentencing only had to be proved by
    a preponderance of the evidence 
    (Watts, 519 U.S. at 155-57
    , 136 L.
    Ed. 2d at 
    563-65, 117 S. Ct. at 637-38
    ).
    We discern from the cases discussed above that the principle of
    collateral estoppel embodied in the double jeopardy clause of the
    United States Constitution does not preclude the relitigation of an
    issue after an acquittal in a criminal trial when the subsequent
    disposition of the issue is governed by a lower standard of proof. This
    is because an acquittal on a criminal charge does not prove that the
    defendant is innocent, but merely that a reasonable doubt exists as to
    his guilt. 
    Watts, 519 U.S. at 155
    , 136 L. Ed. 2d at 
    564, 117 S. Ct. at 637
    , quoting 89 
    Firearms, 465 U.S. at 361
    , 79 L. Ed. 2d at 
    368, 104 S. Ct. at 1104
    . This court’s decision in Grayson, however, extended
    Ashe v. Swenson’s application of the doctrine of collateral estoppel in
    the manner subsequently rejected by these cases. As discussed,
    Grayson relied heavily on Ashe v. Swenson in holding that the State
    was precluded from proceeding with the defendant’s probation
    revocation hearing after the defendant was acquitted of the
    substantive charge, despite the fact that the probation revocation
    hearing involved a lower standard of proof. See 
    Grayson, 58 Ill. 2d at 263-65
    .
    This court did not expressly state in Grayson whether it was
    conducting its analysis solely under the United States Constitution
    (U.S. Const., amend. V). Assuming it was, then Grayson clearly goes
    beyond what is required by the double jeopardy clause of the fifth
    amendment in precluding the relitigation of an issue under a lower
    standard of proof after an acquittal in a criminal trial. Furthermore,
    we find no independent support for Grayson’s expansive
    interpretation of the principle of collateral estoppel in the double
    jeopardy clause of the Illinois Constitution of 1970 (Ill. Const. 1970,
    art. I, §10). This court has previously interpreted the Illinois
    Constitution’s double jeopardy clause in a manner that is consistent
    with the United States Supreme Court’s interpretation of the double
    jeopardy clause of the fifth amendment. See In re P.S., 
    175 Ill. 2d 79
    ,
    -20-
    89-90 (1997), citing People v. Levin, 
    157 Ill. 2d 138
    , 160 (1993);
    People v. 1988 Mercury Cougar, 
    154 Ill. 2d 27
    , 39 (1992). We have
    no reason to do otherwise here. As we recently described in People
    v. Caballes, our approach to determining the relationship between
    cognate provisions of the Illinois Constitution and the United States
    Constitution is an “interstitial,” or “limited,” form of the lockstep
    doctrine. 
    Caballes, 221 Ill. 2d at 309
    . Consistent with that approach
    
    (Caballes, 221 Ill. 2d at 310-11
    ), we find nothing in the language of
    our state constitution (Ill. Const. 1970, art. I, §10 (“No person shall
    *** be twice put in jeopardy for the same offense”)), the debates or
    committee reports of the constitutional convention (3 Record of
    Proceedings, Sixth Illinois Constitutional Convention 1376-80, 1390;
    6 Record of Proceedings, Sixth Illinois Constitutional Convention 43-
    44), or the tradition of our state that warrants interpreting the Illinois
    Constitution’s double jeopardy clause to preclude a probation
    revocation hearing after an acquittal of the substantive charge in the
    manner suggested by Grayson. In light of these considerations,
    overruling Grayson would have the salutary effect of harmonizing
    this court’s case law regarding the collateral estoppel component of
    the guarantee against double jeopardy with that of the United States
    Supreme Court. It would also eliminate the tension between Grayson
    and this court’s more recent decisions in Jackson and Nau.
    Grayson’s doctrinal weakness is not the only factor that militates
    in favor of its abrogation. The rule established by Grayson is
    unworkable, because it creates a perverse system of incentives for the
    State and for defense counsel in cases where a defendant faces both
    a substantive charge and probation revocation based on the same
    conduct. In such cases, the defendant can receive a trial on the
    substantive charge before his probation revocation hearing, receive a
    trial on the substantive charge after his probation revocation hearing,
    or receive a trial on the substantive charge at the same time as his
    probation revocation hearing. The third option is beneficial to the
    State and the defendant, because it avoids duplicative litigation, and
    thereby results in a more prompt, less costly disposition of all the
    proceedings against the defendant. However, Grayson provides
    defense counsel with an incentive to argue their own ineffectiveness
    in consolidated proceedings that result in an acquittal and a probation
    -21-
    revocation, and provides the State with a concomitant incentive to
    avoid consolidation.
    To illustrate this point, under Grayson, the only scenario in which
    objecting to consolidation actually proves helpful to a defendant is
    where the State tries the substantive charge first and the defendant is
    acquitted. However, defense counsel can achieve the same result by
    not objecting to consolidation, and can do so at an advantage to the
    defendant. If counsel does not object, counsel secures the benefits of
    prompt adjudication that consolidation provides. Counsel also avoids
    the possibility that the State will simply proceed first with the
    probation revocation hearing and obtain a finding that the defendant
    violated his probation. Then, in the end, if the defendant is acquitted
    of the substantive charge but found to have violated his probation,
    defense counsel can argue he was ineffective for not objecting to
    consolidation. A finding of ineffective assistance of counsel will
    result in an automatic reversal of the finding that the defendant
    violated his probation, because, pursuant to Grayson, the acquittal
    precludes the State from proceeding with a new probation revocation
    hearing.
    Alternatively, defense counsel can simply request consolidation
    on the defendant’s behalf. There again, the same concerns arise. The
    defendant enjoys the benefits of a consolidated proceeding while
    preserving the opportunity to obtain an automatic reversal of the
    finding that he violated the terms of his probation.
    Defendant’s point is well taken that lawyers have a reputational
    interest in avoiding determinations that they provided ineffective
    assistance of counsel. Grayson, however, has created a situation
    where a defense lawyer is encouraged to provide ineffective
    assistance of counsel in the interest of zealous advocacy. Therefore,
    the fact that lawyers generally seek to avoid allegations of
    ineffectiveness does little to assuage our concerns.
    For the reasons expressed above, we believe good cause exists to
    overrule Grayson. The appellate court’s decisions in People v. Porter
    and In re A.V., which relied on Grayson in finding that the defendants
    therein received ineffective assistance of counsel, are hereby
    overruled as well. In light of our conclusion that collateral estoppel
    does not preclude the State from proceeding with a probation
    revocation hearing after a defendant has been acquitted of the
    -22-
    substantive charge, defendant’s ineffective assistance of counsel
    claim must fail.
    II. Sufficiency of Evidence of Probation Violation
    Having rejected defendant’s ineffective assistance of counsel
    claim, we briefly address whether the evidence presented to the trial
    court was sufficient to prove that defendant violated his probation.
    Defendant argues that the evidence submitted at trial was
    insufficient to demonstrate that the item he dropped was “firearm
    ammunition” as defined by section 1.1 of the Firearm Owners
    Identification Card Act (FOID Act) (430 ILCS 65/1.1 (West 2002)).
    Specifically, defendant contends that Sergeant Glynn’s testimony
    about finding an ammunition clip containing nine-millimeter rounds
    was insufficient to prove that the clip actually contained live nine-
    millimeter rounds. Defendant posits that the cartridges might have
    been blanks, and that none of the evidence presented by the State
    rules out this possibility.
    The State maintains that the evidence was sufficient to show by
    a preponderance that defendant was in possession of firearm
    ammunition as a felon. According to the State, it is clear that the
    credible testimony of one witness is sufficient to sustain a defendant’s
    conviction, even if that testimony is contradicted by the defendant.
    Here, Sergeant Glynn’s testimony that he observed defendant in
    possession of a black, semiautomatic pistol, and that he recovered an
    ammunition clip containing nine-millimeter rounds, was sufficient to
    establish that defendant was in possession of firearm ammunition.
    The State emphasizes that Sergeant Glynn was an 18-year veteran of
    the Chicago police department at the time of the offense, and that his
    testimony was neither impeached nor discredited.
    Section 24–1.1 of the Criminal Code of 1961 provides, in
    pertinent part:
    “It is unlawful for a person to knowingly possess on or
    about his person *** any weapon prohibited under Section
    24–1 of this Act or any firearm or any firearm ammunition if
    the person has been convicted of a felony under the laws of
    -23-
    this State or any other jurisdiction.” (Emphasis added.) 720
    ILCS 5/24–1.1(a) (West 2002).
    Section 2–7.1 of the Code defines “firearm ammunition” as
    having the meaning ascribed to it in section 1.1 of the FOID Act (720
    ILCS 5/2–7.1 (West 2002)). Section 1.1, in turn, provides that
    “[f]irearm ammunition” means:
    “[A]ny self-contained cartridge or shotgun shell, by
    whatever name known, which is designed to be used or
    adaptable to use in a firearm; excluding, however:
    (1) any ammunition exclusively designed for use with
    a device used exclusively for signalling or safety and
    required or recommended by the United States Coast
    Guard or the Interstate Commerce Commission; and
    (2) any ammunition designed exclusively for use with
    a stud or rivet driver or other similar industrial
    ammunition.” 430 ILCS 65/1.1 (West 2002).
    The State must prove a violation of probation by a preponderance
    of the evidence. 730 ILCS 5/5–6–4(c) (West 2002). One condition of
    probation is that a person on probation “not violate any criminal
    statute of any jurisdiction.” 730 ILCS 5/5–6–3(a)(1) (West 2002). In
    the State’s petition to revoke defendant’s probation, the State alleged
    that defendant violated his probation by committing the offense of
    unlawful use of a weapon by a felon. Defendant’s information
    specified that he committed the offense by “knowingly possess[ing]
    on or about his person any firearm ammunition, to wit: bullets, after
    having been previously convicted of the felony offense of aggravated
    unlawful use of a weapon.” Accordingly, to demonstrate that
    defendant violated a condition of his probation, the State had to show
    by a preponderance of the evidence that, while on probation,
    defendant knowingly possessed firearm ammunition as a felon.
    Defendant does not dispute that, on April 19, 2004, the date of his
    alleged probation violation, he was on probation and was a felon.
    Defendant also does not dispute that he was in knowing possession
    of the item that Sergeant Glynn saw him drop in the alley and
    subsequently recovered. Defendant argues only that the evidence
    presented at trial was insufficient to demonstrate by a preponderance
    -24-
    that the item in question was, in fact, “firearm ammunition” as
    defined by section 1.1 of the FOID Act.
    We note that defendant’s challenge to the sufficiency of the
    evidence assumes that, as a matter of law, blank ammunition does not
    qualify as “firearm ammunition” for purposes of section 1.1 of the
    FOID Act. We need not address the validity of this assumption, as
    defendant has made no attempt to justify it through argument or
    citation to relevant authority. See 210 Ill. 2d R. 341(h)(7) (argument
    portion of brief “shall contain the contentions of the appellant and the
    reasons therefor, with citation of the authorities and the pages of the
    record relied on *** [and] [p]oints not argued are waived”); Miller v.
    Rosenberg, 
    196 Ill. 2d 50
    , 56 n.2 (2001) (declining to address party’s
    challenge to ruling barring his attorney fees as element of damages in
    his malicious prosecution claim where brief contained insufficient
    discussion of issue). Moreover, even assuming, arguendo, that blanks
    do not qualify as “firearm ammunition” within the meaning of the
    relevant statutory definition, the evidence presented to the trial court
    provided it with a sufficient basis for inferring that the clip in
    defendant’s possession contained live nine-millimeter rounds, not
    blanks.
    When the trial court finds that a violation of probation has been
    proved, a challenge to the sufficiency of the evidence of the type
    asserted by defendant will succeed only if the trial court’s finding is
    against the manifest weight of the evidence. People v. Houston, 
    118 Ill. 2d 194
    , 199 (1987); People v. Cooper, 
    66 Ill. 2d 509
    , 514 (1977);
    People v. Crowell, 
    53 Ill. 2d 447
    , 451-52 (1973). In the instant case,
    Sergeant Glynn’s testimony established that he was an 18-year
    veteran of the Chicago police department, that he clearly observed
    defendant in possession of a black, semiautomatic pistol, and that he
    recovered a magazine from that pistol containing nine-millimeter
    rounds. As the State points out, Sergeant Glynn’s testimony was not
    contradicted or impeached in any way, and there is no indication in
    the record before us that the cartridges he identified were blanks.
    Therefore, the trial court could reasonably have inferred that the
    ammunition in defendant’s possession was live ammunition, and the
    court’s finding that defendant violated his probation by committing
    the offense of unlawful use of a weapon by a felon was not against
    the manifest weight of the evidence. Accord People v. Lee, 48 Ill. 2d
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    272, 281 (1971) (rejecting defendants’ argument that, by failing to
    prove that shotgun shells introduced into evidence were live shells,
    the State failed to meet its burden of proving defendants guilty
    beyond a reasonable doubt of unlawful possession of firearm
    ammunition, because whether shells were capable of being discharged
    was for trier of fact to decide, and nothing in record suggested shells
    were not, in fact, live).
    CONCLUSION
    For the reasons expressed above, we hold that defendant was not
    denied the effective assistance of counsel, and that the evidence was
    sufficient to demonstrate that defendant violated his probation.
    Accordingly, we reverse the judgment of the appellate court and
    affirm the judgment of the circuit court.
    Appellate court judgment reversed;
    circuit court judgment affirmed.
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