Phuoc Nguyen v. State of Iowa , 878 N.W.2d 744 ( 2016 )


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  •                IN THE SUPREME COURT OF IOWA
    No. 14–0401
    Filed March 11, 2016
    PHUOC NGUYEN,
    Appellant,
    vs.
    STATE OF IOWA,
    Appellee.
    Appeal      from   the     Iowa   District   Court    for     Polk   County,
    Rebecca Goodgame Ebinger, Judge.
    In this second application for postconviction relief, a defendant
    challenges   his    murder      conviction   under    the   state    and    federal
    constitutions and on state common law retroactivity grounds. DISTRICT
    COURT JUDGMENT AFFIRMED.
    Mark C. Smith, State Appellate Defender, and Vidhya K. Reddy,
    Assistant Appellate Defender, for appellant.
    Thomas J. Miller, Attorney General, Martha E. Trout, Assistant
    Attorney General, John P. Sarcone, County Attorney, and Celene
    Gogerty, Assistant County Attorney, for appellee.
    2
    ZAGER, Justice.
    In 1999, Phuoc Thanh Nguyen was convicted of first-degree
    murder. The jury was instructed on both the premeditation and felony-
    murder alternatives of first-degree murder.             The underlying predicate
    felony was Terrorism. 1       The use of an assaultive predicate felony was
    supported by a line of cases starting with State v. Beeman, which found
    willful injury to be a proper predicate felony for a felony-murder
    instruction. 
    315 N.W.2d 770
    , 776 (Iowa 1982). In 2006, we overturned
    Beeman in State v. Heemstra.           
    721 N.W.2d 549
    , 558 (Iowa 2006).              In
    Heemstra, we held that when a willful injury is the same act that causes
    a victim’s death, the two crimes merge and the act causing willful injury
    cannot be used as a predicate felony under the felony-murder rule. 
    Id. If Heemstra
    had been controlling at the time of Nguyen’s conviction,
    terrorism could not have been used as the predicate felony, and the
    felony-murder instruction could not have been given as a theory to
    convict Nguyen. In contemplation of our prerogative under the common
    law, we specifically held that the decision was not retroactive and would
    only be applicable to the present case and those cases not finally
    resolved on direct appeal. 
    Id. In 2009,
    this court decided Goosman v.
    State. 
    764 N.W.2d 539
    , 545 (Iowa 2009). In Goosman, we held that the
    nonretroactive application of Heemstra does not violate the federal Due
    Process Clause. 
    Id. 1The crime
    of terrorism, which was the predicate felony in this case, is now
    referred to as intimidation with a dangerous weapon. Compare Iowa Code § 708.6
    (2015) with Iowa Code § 708.6 (1997). In a later case, this court applied the
    independent felony rule to the use of intimidation with a dangerous weapon (formerly
    terrorism) as the predicate felony in felony murder. State v. Millbrook, 
    788 N.W.2d 647
    ,
    652–53 (Iowa 2010).
    3
    Within three years of our decision in Heemstra, Nguyen filed this
    second application for postconviction relief. In this application, Nguyen
    argues that his conviction should be vacated and a new trial ordered,
    contending that the nonretroactive application of Heemstra violates the
    due process, separation of powers, and equal protection clauses of the
    Iowa Constitution. Nguyen also argues it violates the Equal Protection
    Clause of the United States Constitution.    For the first time, Nguyen
    further argues on appeal his postconviction counsel were ineffective for
    failing to raise and argue for the retroactive application of Heemstra
    under the common law.
    For the reasons set forth below, we conclude that Nguyen’s
    postconviction counsel were not ineffective. We also conclude that the
    nonretroactivity of the rule expressed in Heemstra does not violate the
    due process, separation of powers, or equal protection clauses of the
    Iowa Constitution, or the Equal Protection Clause of the United States
    Constitution.
    I. Background Facts and Proceedings.
    In 1999, Phuoc Thanh Nguyen was convicted of first-degree
    murder based on alternative theories that included a felony-murder
    theory. On direct appeal, the court of appeals recounted the evidence
    presented at trial and established a number of facts that a jury could
    have found based on the record:
    On the afternoon of July 15, 1998, Nguyen and Dao
    approached “The Cloud,” a Des Moines bar. Dao exited the
    car and expressed his interest in purchasing an ounce of
    cocaine.    While Nguyen stayed near the car, several
    individuals accompanied Dao into an alley where he was
    beaten and robbed. After the robbery, Dao left the area on
    foot and Nguyen departed in the vehicle.
    Later the same day, a car approached The Cloud and
    one or more of its occupants fired several gunshots into a
    4
    crowd of people standing outside the bar. Monty Thomas
    was fatally shot. Two witnesses recorded the license plate of
    the vehicle in which the gun-toting assailants rode. When
    law enforcement officers stopped the vehicle later that
    evening, Nguyen was driving with Dao as his passenger. Dao
    and Nguyen were charged with first-degree murder. The
    defendants were tried separately.
    ....
    . . . Witness testimony linked Nguyen to the incident
    before, during, and after the shooting. The testimony of
    Rodney Martin placed Dao and a man who looked like
    Nguyen at The Cloud shortly before the shooting. While the
    man resembling Nguyen remained in the driver’s seat of the
    car parked near the bar, Dao and a third individual solicited
    drugs from Martin. Martin testified Dao was beaten and
    robbed following the unsuccessful cocaine purchase, and
    Nguyen and the third person drove away from the bar.
    Confirming this testimony, Owen Smith described a
    conversation he had with Nguyen while Dao was in the alley
    attempting to purchase drugs. Smith testified he spoke to
    Nguyen for ten to fifteen minutes before Nguyen left the
    scene.
    Nguyen was also recognized as the driver of the car
    that arrived at The Cloud transporting the armed
    participants in the shooting. Elgin Byron, a teller at the
    local bank where Nguyen was a regular customer, identified
    Nguyen as the driver of the car involved in the shooting. He
    recalled the black Mitsubishi Nguyen drove to the bar on the
    day in question as the same car Nguyen had brought to the
    bank on prior occasions. Shawn Duncan, who also observed
    the black automobile, identified Dao as an occupant of the
    car who fired a gun in his direction. Similarly, David Gray
    witnessed Dao shooting from the black car. Gray noted the
    car’s license plate number, which matched that of the car
    Nguyen and Dao were arrested in later that evening.
    After the shooting, law enforcement officers observed a
    black Mitsubishi matching the description of the vehicle and
    license plate number given by eyewitnesses to the crime.
    Upon stopping the car, they arrested its driver, Nguyen, and
    the vehicle’s backseat passenger, Dao. Two bullet holes in
    the vehicle’s trunk were of a size consistent with the .45
    caliber casings found outside The Cloud. The man who
    loaned the black Mitsubishi to Nguyen testified the first time
    he noticed the trunk bullet holes was upon recovering his
    car from police after Nguyen’s arrest. Lastly, Nguyen made
    an incriminating statement regarding his involvement in the
    shooting. An officer testified upon telling Nguyen he was
    5
    being arrested for his role in The Cloud homicide, Nguyen
    replied “all he did was drive the car.”
    State v. Nguyen, No. 99–1444, 
    2002 WL 575746
    , at *1–2 (Iowa Ct. App.
    Mar. 13, 2002). Nguyen raised several issues before the court of appeals
    on   direct    appeal    including   insufficiency           of     the    evidence,    the
    Confrontation Clause, and ineffective assistance of counsel. The court of
    appeals affirmed his conviction on March 13, 2002, and procedendo
    issued on May 30.
    In      August    2002,    Nguyen       filed    his        first   application   for
    postconviction relief in the district court.           He asserted new claims of
    ineffective assistance of counsel primarily related to trial counsel’s failure
    to raise certain evidentiary objections. The district court found that his
    counsel was ineffective and ordered a new trial. The State appealed the
    decision, and we transferred the case to the court of appeals. The court
    of appeals reversed the district court.               Nguyen applied for, and we
    granted, further review.        On December 23, 2005, we concluded that
    Nguyen did not establish the requisite prejudice to support his claims of
    ineffective assistance of counsel. We vacated the decision of the court of
    appeals and reversed the judgment of the district court.                      Procedendo
    issued on January 19, 2006.
    In August 2006, we issued our opinion in Heemstra. This opinion
    overruled a long line of cases, starting with Beeman. 2                    
    Heemstra, 721 N.W.2d at 558
    . Heemstra held that if an act causing willful injury is the
    same act that causes a victim’s death, the two crimes merge and the act
    causing willful injury cannot be used as the predicate felony under the
    2Beeman’s   progeny, all of which we overruled in Heemstra, include State v.
    Anderson, 
    517 N.W.2d 208
    , 214 (Iowa 1994); State v. Rhomberg, 
    516 N.W.2d 803
    , 805
    (Iowa 1994); State v. 
    Ragland, 420 N.W.2d at 791
    , 793; and State v. Mayberry, 
    411 N.W.2d 677
    , 682–83 (Iowa 1987).
    6
    felony-murder rule.    
    Id. Our opinion
    in Heemstra stated that the
    decision would be applicable only to the present case and to cases not
    finally resolved on direct appeal. 
    Id. As previously
    stated, if Heesmtra
    had been controlling authority at the time of Nguyen’s conviction rather
    than Beeman, it would have eliminated the felony-murder theory of first-
    degree murder as a viable theory on which Nguyen could be convicted.
    On April 2, 2009, Nguyen filed pro se this second application for
    postconviction relief. On the same day, he filed a pro se brief in support
    of his application. On April 17, we decided Goosman, which held that
    Heemstra’s nonretroactivity does not violate the federal Due Process
    
    Clause. 764 N.W.2d at 545
    .      On March 19, 2010, court-appointed
    counsel filed a motion to withdraw on the basis that she found no legal
    grounds to proceed after the Goosman decision.         The district court
    granted the motion to withdraw and appointed substitute counsel to
    represent Nguyen in his postconviction relief action. Nguyen’s substitute
    counsel also moved to withdraw on the same grounds, but the district
    court denied the motion.
    On October 6, the State moved for summary disposition. The State
    noted that procedendo in the first postconviction relief action issued
    more than three years before Nguyen filed his second postconviction
    relief action. Therefore, the State argued, the action was barred by the
    statute of limitations. Nguyen filed a resistance, arguing that the action
    was not barred by the statute of limitations because it was based on the
    Heemstra decision and therefore fell within the exception for “a ground of
    fact or law that could not have been raised within the applicable time
    period.” Iowa Code § 822.3 (2009). Nguyen acknowledged that Goosman
    foreclosed an argument under the federal Due Process Clause. However,
    Nguyen argued that retroactivity was required under the federal Equal
    7
    Protection Clause and under the due process, separation of powers, and
    equal protection clauses of the Iowa Constitution.           None of these
    arguments were raised or decided in Goosman. 
    See 764 N.W.2d at 545
    .
    The district court granted the State’s motion and Nguyen appealed.
    We retained Nguyen’s appeal and reversed the district court’s dismissal
    of Nguyen’s postconviction relief application on statute of limitation
    grounds.    Nguyen v. State, 
    829 N.W.2d 183
    , 189 (Iowa 2013).            We
    determined that Nguyen’s postconviction relief application fell within the
    exception contained in Iowa Code section 822.3 because Nguyen could
    not have argued for the retroactive application of Heemstra until after
    Heemstra had been decided.       
    Id. at 188.
         Since Nguyen had filed his
    application for postconviction relief within three years, his claims as to
    retroactivity were not time-barred.       
    Id. We remanded
    the case to the
    district court to hear the merits of Nguyen’s arguments that Heemstra
    must be applied retroactively under the due process, separation of
    powers, and equal protection clauses of the Iowa Constitution or the
    Equal Protection Clause of the United States Constitution. 
    Id. at 189.
    Procedendo issued on April 18.
    The district court appointed new counsel to represent Nguyen and
    ordered Nguyen’s postconviction relief case be consolidated with two
    other applicants who were also pursuing the retroactive application of
    Heemstra.   Nguyen, along with Tony Sihavong and Thanh Dao, filed a
    consolidated trial brief. They argued that if the rule in Heemstra applied,
    each applicant would be entitled to a new trial.        Further, they argued
    retroactive application of Heemstra was required under the constitutional
    theories we identified in Nguyen’s appeal. See 
    id. The district
    court held
    a joint postconviction relief trial for Nguyen, Dao, and Sihavong.      The
    district court denied all three claims for postconviction relief.   It ruled
    8
    that the claims of Dao and Shihavong were procedurally barred. It also
    considered all of the constitutional claims raised by Nguyen and held the
    nonretroactivity of Heemstra was not unconstitutional under any of the
    theories raised.
    Nguyen filed a notice of appeal.      He appealed each ruling of the
    district court on the constitutional challenges and for the first time
    raised an ineffective-assistance-of-counsel claim for the failure of
    postconviction counsel to argue for the retroactive application of
    Heemstra     on    nonconstitutional,   common   law   grounds.      Nguyen
    requested that the merits of his nonconstitutional, common law claim be
    considered under the ineffective-assistance-of-postconviction-counsel
    framework.
    II. Standard of Review.
    “Generally, an appeal from a denial of an application for
    postconviction relief is reviewed for correction of errors at law.” Perez v.
    State, 
    816 N.W.2d 354
    , 356 (Iowa 2012) (quoting 
    Goosman, 764 N.W.2d at 541
    ).   However, “[u]nder both the State and Federal Constitutions,
    ineffective-assistance-of-counsel claims are reviewed de novo.” Ennenga
    v. State, 
    812 N.W.2d 696
    , 701 (Iowa 2012). We review these claims de
    novo because they are based on the constitutional guarantees of the
    effective assistance of counsel found in the Sixth Amendment of the U.S.
    Constitution and article I, section 10 of the Iowa Constitution. See State
    v. McNeal, 
    867 N.W.2d 91
    , 99 & n.1 (Iowa 2015).
    Ineffective-assistance-of-counsel     claims   are   not    bound   by
    traditional rules of error preservation.    State v. Ondayog, 
    722 N.W.2d 778
    , 784 (Iowa 2006). “To the extent error is not preserved on an issue,
    any objections must be raised within an ineffective-assistance-of-counsel
    framework.” State v. Ambrose, 
    861 N.W.2d 550
    , 555 (Iowa 2015).
    9
    III. Analysis.
    In pertinent part, the Iowa Code in force at the time of Nguyen’s
    crime defined first-degree murder as a murder that occurs when a
    person “willfully, deliberately, and with premeditation kills another
    person” or when a person “kills another person while participating in a
    forcible felony.” Iowa Code § 707.2 (1997).
    When Nguyen was convicted, Beeman and its progeny were
    controlling law.   In Beeman, the court held that Iowa’s first-degree
    murder statute made willful injury a proper predicate felony for a felony-
    murder 
    instruction. 315 N.W.2d at 776
    . We concluded the legislature
    neither intended for the felonies to merge nor required an independent
    felony for the felony-murder rule to apply. 
    Id. at 777.
    Under the Beeman
    line of cases, it was proper for a jury to be instructed on felony murder
    even when the act that constituted the underlying felony was also the
    same act that caused the victim’s death. See 
    id. We overruled
    Beeman in 
    Heemstra. 721 N.W.2d at 558
    .       We
    adopted the merger doctrine for felony murder and held “if the act
    causing willful injury is the same act that causes the victim’s death, the
    former is merged into the murder and therefore cannot serve as the
    predicate felony for felony-murder purposes.” 
    Id. In Heemstra,
    we also
    stated that the rule announced in the case would only be applicable to
    “those cases not finally resolved on direct appeal in which the issue has
    been raised in the district court.”       
    Id. Three years
    later, we held in
    Goosman that the nonretroactivity of Heemstra did not violate federal due
    
    process. 764 N.W.2d at 545
    .           Nguyen   now   challenges   the
    nonretroactivity of Heemstra under the due process, separation of
    powers, and equal protection clauses of the Iowa Constitution and the
    Equal Protection Clause of the United States Constitution. Alternatively,
    10
    Nguyen argues that postconviction counsel were ineffective for failing to
    additionally   urge    the     retroactive   application    of    Heemstra     on
    nonconstitutional, common law grounds.
    Our doctrine of constitutional avoidance instructs us that we
    should “steer clear of ‘constitutional shoals’ when possible.”           State v.
    Iowa Dist. Ct., 
    843 N.W.2d 76
    , 85 (Iowa 2014). Therefore, we will analyze
    whether postconviction counsel were ineffective before determining
    whether we need to address the constitutional arguments.
    A. Ineffective Assistance of Postconviction Counsel.              Nguyen
    claims his postconviction counsel were ineffective for failing to pursue
    Heemstra retroactivity on nonconstitutional, common law grounds.
    1. Statute of limitations.       The State argues that Nguyen’s
    ineffective-assistance-of-counsel claim is time-barred by Iowa Code
    section 822.3, which covers the statute of limitations for postconviction
    relief actions. In relevant part, this section states:
    [A]pplications must be filed within three years from the date the
    conviction or decision is final or, in the event of an appeal, from
    the date the writ of procedendo is issued. However, this limitation
    does not apply to a ground of fact or law that could not have been
    raised within the applicable time period.
    Iowa   Code    §   822.3     (2009).    Nguyen’s    current      application   for
    postconviction relief was filed on April 2, 2009. It is not clear at what
    point the State alleges the statute of limitations began running on
    Nguyen’s ineffective-assistance-of-counsel claim.          However, it appears
    the State argues that the limitation period began to run at the time
    counsel was allegedly ineffective—when counsel failed to raise the issue
    of common law retroactivity.
    We find that the claim is not time-barred. In his April 2009 pro se
    brief filed in support of his second application for postconviction relief,
    11
    Nguyen clearly asserted that Heemstra should be applied retroactively to
    his case, thereby entitling him to a new trial.         While not specifically
    referring   to     it     as    such,        Nguyen   also   discusses    the
    Teague/Bousley/Schriro—i.e., common law—framework for evaluating
    the retroactive application of state decisions. See Schriro v. Summerlin,
    
    542 U.S. 348
    , 351–52, 
    124 S. Ct. 2519
    , 2522–23, 
    159 L. Ed. 2d 442
    , 448
    (2004); Bousley v. United States, 
    523 U.S. 614
    , 620–21, 
    118 S. Ct. 1604
    ,
    1610, 
    140 L. Ed. 2d 828
    , 838–39 (1998); Teague v. Lane, 
    489 U.S. 288
    ,
    310, 
    109 S. Ct. 1060
    , 1075 
    103 L. Ed. 2d 334
    , 356 (1989). This brief put
    the issue of common law retroactivity into play.
    After counsel was appointed, the district court granted summary
    judgment to the State on all of the grounds alleged in the postconviction
    relief application. Following an appeal, on March 22, 2013, this court
    reversed the decision of the district court and remanded the case to
    consider only the state and federal constitutional claims raised in
    Nguyen’s 2009 postconviction relief application. This is the point in the
    proceedings when the common law claim was lost to Nguyen because the
    scope of the district court’s consideration of the postconviction relief
    application on remand was limited by this court’s pronouncement. See
    In re Marriage of Davis, 
    608 N.W.2d 766
    , 769 (Iowa 2000). Therefore, if
    postconviction counsel intended to raise the common law retroactivity
    argument, it would have been their duty to file a rule 6.1205 petition for
    rehearing with this court asking for a modified disposition to permit
    Nguyen to present his common law argument to the district court on
    remand. Iowa R. App. P. 6.1205. The first time counsel could have been
    ineffective was April 5, 2013, the day the deadline passed for a rule
    6.1205 petition.        Nguyen raised his ineffective-assistance-of-counsel
    claim on April 13, 2015, comfortably within the three-year statute of
    12
    limitations.   Therefore, Nguyen’s allegation of ineffective assistance of
    counsel is timely.
    2. Merits of ineffective-assistance-of-counsel claim.    “The right to
    assistance of counsel under the Sixth Amendment to the United States
    Constitution and article I, section 10 of the Iowa Constitution is the right
    to ‘effective’ assistance of counsel.”      
    Ambrose, 861 N.W.2d at 556
    (quoting State v. Fountain, 
    786 N.W.2d 260
    , 265 (Iowa 2010)). When we
    evaluate ineffective-assistance-of-counsel claims, we apply a two-pronged
    test.   State v. Gaskins, 
    866 N.W.2d 1
    , 5 (Iowa 2015).          We ask if trial
    counsel breached an essential duty. 
    Id. We also
    ask whether prejudice
    resulted from said breach. 
    Id. The defendant
    has the burden of proving
    both elements by a preponderance of the evidence.                See State v.
    Halverson, 
    857 N.W.2d 632
    , 635 (Iowa 2015).
    Under the first prong, when we decide whether counsel’s
    performance was deficient, “we measure counsel’s performance against
    the standard of a reasonably competent practitioner.” Dempsey v. State,
    
    860 N.W.2d 860
    , 868 (Iowa 2015) (quoting State v. Clay, 
    824 N.W.2d 488
    , 495 (Iowa 2012)). “We assess counsel’s performance ‘objectively by
    determining whether [it] was reasonable, under prevailing professional
    norms, considering all the circumstances.’ ”      
    Id. (alteration in
    original)
    (quoting State v. Lyman, 
    776 N.W.2d 865
    , 878 (Iowa 2010)).                It is
    presumed that counsel acted competently, and therefore, the defendant
    must overcome that presumption.         See Strickland v. Washington, 
    466 U.S. 668
    , 689, 
    104 S. Ct. 2052
    , 2065, 
    80 L. Ed. 2d 674
    , 694–95 (1984).
    Because of the difficulties inherent in making the evaluation,
    a court must indulge a strong presumption that counsel’s
    conduct falls within the wide range of reasonable
    professional assistance; that is, the defendant must
    overcome the presumption that, under the circumstances,
    13
    the challenged action “might be considered sound trial
    strategy.”
    
    Id. (quoting Michel
    v. Louisiana, 
    350 U.S. 91
    , 101, 
    76 S. Ct. 158
    , 164,
    
    100 L. Ed. 83
    , 93 (1955)).     In this case, we must determine whether
    Nguyen’s postconviction counsel failed to perform an essential duty by
    not pursuing the nonconstitutional, common law retroactivity claim.
    We note that in his pro se brief, Nguyen raised both constitutional
    and common law claims in support of his argument for the retroactive
    application of Heemstra. We also note that we have not yet adopted the
    federal per se framework Nguyen advances in his brief for evaluating the
    retroactive effect of our own state cases.
    In 1965, the United States Supreme Court decided Linkletter v.
    Walker, which adopted a practical balancing test that considered a
    number of factors in determining whether a United States Supreme
    Court case should be applied retroactively. 
    381 U.S. 618
    , 629, 
    85 S. Ct. 1731
    , 1738, 
    14 L. Ed. 2d 601
    , 608 (1965), abrogated by Griffith v.
    Kentucky, 
    479 U.S. 314
    , 
    107 S. Ct. 708
    , 
    93 L. Ed. 2d 649
    (1987). Soon
    thereafter, we began using the same Linkletter balancing framework to
    determine the retroactivity of our own state supreme court decisions.
    See, e.g., Everett v. Brewer, 
    215 N.W.2d 244
    , 247–48 (Iowa 1974).
    Since our decision in Everett, the United States Supreme Court has
    developed a different framework in analyzing retroactivity.     The Court
    eventually stopped using the Linkletter balancing approach because of
    difficulties in its application. See 
    Teague, 489 U.S. at 302
    –05, 109 S. Ct.
    at 
    1071–73, 103 L. Ed. 2d at 350
    –52. In a trilogy of cases, the Supreme
    Court adopted a new, per se framework for evaluating the retroactivity of
    14
    its own decisions to already-final cases. 3 See 
    Schriro, 542 U.S. at 351
    –
    52, 
    124 S. Ct. 2522
    –23, 159 L. Ed. 2d at 448; Bousley, 
    523 U.S. 620
    –21,
    
    118 S. Ct. 1610
    , 140 L. Ed. 2d at 838–39; 
    Teague, 489 U.S. at 310
    , 109
    S. Ct. at 
    1075, 103 L. Ed. 2d at 356
    .                 As in Linkletter, this per se
    approach was adopted to determine the retroactivity of already-final
    United States Supreme Court cases. See, e.g., 
    Teague, 489 U.S. at 310
    ,
    109 S. Ct. at 
    1075, 103 L. Ed. 2d at 355
    –56.                    This is the approach
    Nguyen urges us to adopt and apply in determining the retroactive
    application of our own state supreme court cases. 4
    Without expressly adopting the federal per se framework, we have
    applied a similar per se framework to evaluate the retroactive effect of
    United States Supreme Court cases.               See, e.g., State v. Ragland, 
    836 N.W.2d 107
    , 114 (Iowa 2013); 
    Perez, 816 N.W.2d at 358
    –59; Goosman,
    3As  discussed in detail below, the United States Supreme Court has summarized
    its per se approach since its decision in Schriro:
    [A]n old rule applies both on direct and collateral review, but a new rule
    is generally applicable only to cases that are still on direct review. A new
    rule applies retroactively in a collateral proceeding only if (1) the rule is
    substantive or (2) the rule is a “ ‘watershed rul[e] of criminal procedure’
    implicating the fundamental fairness and accuracy of the criminal
    proceeding.”
    Whorton v. Bockting, 
    549 U.S. 406
    , 416, 
    127 S. Ct. 1173
    , 1180–81, 
    167 L. Ed. 2d 1
    , 10–
    11 (2007) (second alteration in original) (citation omitted) (quoting Saffle v. Parks, 
    494 U.S. 484
    , 495, 
    110 S. Ct. 1257
    , 1264, 
    108 L. Ed. 2d 415
    , 429 (1990)).
    4Nguyen    has submitted additional authority on the federal approach to
    retroactivity. See Montgomery v. Louisiana, 577 U.S. ___, 
    136 S. Ct. 718
    , ___ L. Ed. 2d
    ___ (2016). However, Montgomery does not assist us in deciding this case. In
    Montgomery, the United States Supreme Court stated,
    The Court now holds that when a new substantive rule of constitutional
    law controls the outcome of a case, the Constitution requires state
    collateral review courts to give retroactive effect to that rule. Teague’s
    conclusion establishing the retroactivity of new substantive rules is best
    understood as resting upon constitutional premises.
    Id. at ___, 136 S. Ct. at 729, ___ L. Ed. 2d at ___.     Heemstra did not create a new
    substantive rule of constitutional dimension.
    
    15 764 N.W.2d at 540
    , 544–45; Morgan v. State, 
    469 N.W.2d 419
    , 422 (Iowa
    1991).
    We likewise fully considered common law retroactivity in deciding
    Heemstra.     Following our initial opinion in Heemstra, there were
    concerns about the retroactive or prospective application of our ruling.
    The State applied for rehearing and asked for guidance on the issue of
    retroactivity. In the application for rehearing, the State argued that we
    should only apply Heemstra prospectively.             The application, however,
    noted that we had four options in determining the issue of retroactivity.
    We   could    apply    full   retroactivity,      limited    retroactivity,   limited
    prospectivity, or full prospectivity. This is because in nonconstitutional
    cases, we have the ability to give a new rule only prospective application
    when we overrule one of our own prior decisions. See State v. Robinson,
    
    618 N.W.2d 306
    , 312 (Iowa 2000).
    At the time we determined that Heemstra would only apply
    prospectively, we were aware of the possibility of the common law remedy
    now advanced by Nguyen; however, we declined to adopt the per se
    approach to our decision.       We relied on and considered the authority
    presented within the petition for rehearing and decided under the
    common law that Heemstra would have prospective application only. We
    adhere to our decision in Heemstra and see no legitimate reason to
    change it.    Bierman v. Weier, 
    826 N.W.2d 436
    , 459 (Iowa 2013) (noting
    that precedent should not be set aside lightly because of the importance
    of stare decisis for stability under the law).              Since the common law
    application   of   retroactivity   was    fully    contemplated      in   Heemstra,
    postconviction counsel had no duty to pursue a meritless claim.
    
    Halverson, 857 N.W.2d at 635
    .
    16
    Additionally, in 2013, we remanded Nguyen’s case to specifically
    address the question of “whether retroactive application of Heemstra is
    required by the equal protection, due process, and separation of powers
    clauses of the Iowa Constitution, or the Equal Protection Clause of the
    United States Constitution.” 
    Nguyen, 829 N.W.2d at 189
    . When a case
    is remanded for a special purpose, “the district court upon such remand
    is limited to do the special thing authorized by the appellate court in its
    opinion and nothing else.”    
    Davis, 608 N.W.2d at 769
    .         Because the
    district court was limited to hear only the constitutional claims on
    remand, counsel cannot be ineffective for failing to raise common law
    grounds for relief. A reasonable attorney faced with such a remand order
    would not be expected to raise alternate arguments.
    Because the test for ineffective assistance of counsel is a two-
    pronged test, a defendant must show both prongs have been met.
    
    Dempsey, 860 N.W.2d at 868
    . If the defendant fails “to establish either
    of these elements, we need not address the remaining element.”          
    Id. Since we
    conclude that counsel did not fail to perform an essential duty,
    we need not address the prejudice prong of the ineffective-assistance-of-
    counsel analysis. Because we conclude that postconviction counsel were
    not ineffective, we proceed to review Nguyen’s constitutional claims.
    B. Constitutional      Claims.       Nguyen     alleges    that   the
    nonretroactivity of Heemstra violates the due process, separation of
    powers, and equal protection clauses of the Iowa Constitution and the
    Equal Protection Clause of the United States Constitution. We address
    each in turn.
    1. Due process clause of the Iowa Constitution.     In Goosman, we
    held that the Due Process Clause of the United States Constitution does
    not require the retroactive application of Heemstra to individuals whose
    17
    direct appeals were final prior to the 
    decision. 764 N.W.2d at 545
    . We
    found that the decision in Heemstra was substantive rather than
    procedural and considered two United States Supreme Court decisions
    that addressed the retroactive application of state supreme court
    decisions affecting substantive criminal law. 
    Id. at 542–43;
    see Bunkley
    v. Florida, 
    538 U.S. 835
    , 840 
    123 S. Ct. 2020
    , 2023, 
    155 L. Ed. 2d 1046
    ,
    1051 (2003); Fiore v. White, 
    531 U.S. 225
    , 227–28, 
    121 S. Ct. 712
    , 714
    
    148 L. Ed. 2d 629
    , 633 (2001). Based on those two cases, we noted that
    federal due process only requires retroactive application of clarifications
    to existing substantive law, not changes to substantive law:
    Taken together, Fiore and Bunkley stand for two
    propositions. First, where a court announces a new rule of
    substantive law that simply “clarifies” ambiguities in existing
    law, federal due process requires that the decision be
    retroactively applied to all cases, including collateral attacks
    where all avenues of direct appeal have been exhausted.
    Second, where a court announces a “change” in substantive
    law which does not clarify existing law but overrules prior
    authoritative precedent on the same substantive issue,
    federal due process does not require retroactive application
    of the decision.
    
    Goosman, 764 N.W.2d at 544
    .
    Because we determined that the ruling in Heemstra constituted a
    change in the law rather than a clarification, we held that federal due
    process does not require retroactive application of Heemstra to already-
    final direct appeals. 
    Id. at 545.
    Our analysis in Goosman focused solely
    on the application of federal due process to retroactivity but never
    reached an independent analysis of the state due process clause.          We
    now turn our analysis to the Iowa Constitution.
    The Iowa Constitution provides that “no person shall be deprived of
    life, liberty, or property, without due process of law.” Iowa Const. art. I,
    § 9.   This court has generally considered the federal and state due
    18
    process clauses to be “identical in scope, import[,] and purpose.” War
    Eagle Vill. Apartments v. Plummer, 
    775 N.W.2d 714
    , 719 (Iowa 2009)
    (quoting State v. Bower, 
    725 N.W.2d 435
    , 441 (Iowa 2006)). However, we
    note that we “jealously guard our right and duty to differ in appropriate
    cases.” State v. Short, 
    851 N.W.2d 474
    , 513 (Iowa 2014) (quoting State v.
    Cline, 
    617 N.W.2d 277
    , 285 (Iowa 2000)). “Even in these cases in which
    no substantive distinction had been made between state and federal
    constitutional provisions, we reserve the right to apply the principles
    differently   under   the    state   constitution   compared     to   its   federal
    counterpart.”    
    Gaskins, 866 N.W.2d at 6
    (quoting King v. State, 
    797 N.W.2d 565
    , 571 (Iowa 2011)). We are free to interpret our constitution
    more    stringently   than    its    federal   counterpart,   providing     greater
    protection for our citizens’ constitutional rights. See, e.g., 
    id. at 13–14;
    Iowa Racing Ass’n of Cent. Iowa v. Fitzgerald, 
    675 N.W.2d 1
    , 4–5, 16
    (Iowa 2004). However, “our independent authority to construe the Iowa
    Constitution does not mean that we generally refuse to follow the United
    States Supreme Court decisions.” 
    Short, 851 N.W.2d at 490
    .
    Nguyen argues that we should exercise our discretion to interpret
    our state due process clause differently than the federal Due Process
    Clause and urges us to provide greater protections for citizens under the
    Iowa Constitution. The State responds that this court should utilize the
    same analysis under our state due process clause as we did for the
    federal Due Process Clause in Goosman. In support of its argument for
    analyzing the state due process clause in an identical manner, the State
    argues there is a presumption in favor of upholding lawfully-obtained
    convictions, citing State v. Thompson. 
    856 N.W.2d 915
    , 920 (Iowa 2014)
    (noting that the principle of stare decisis respects prior precedent and
    does not require the court to overturn a case because it may have
    19
    reached a different outcome).       The State also raises public policy
    considerations if the court were to depart from the federal analysis. The
    State cautions that there are practical concerns with ordering a new trial
    for a murder that occurred seventeen years ago—fading memories,
    unavailable witnesses, and renewed trauma for the victim’s family.
    However, because Nguyen’s case falls squarely within the class of
    cases for which the federal courts have decided retroactivity is not
    required under due process, we do not find a compelling reason to depart
    from the federal analysis we used in Goosman. Nor has Nguyen offered
    an alternative framework that we find sufficiently compelling to justify a
    departure from the federal analysis.     See Hensler v. City of Davenport,
    
    790 N.W.2d 569
    , 579 & n.1 (Iowa 2010) (noting that even when a party
    does advance a standard for interpreting the Iowa Constitution
    differently, we may still interpret it using the federal analysis if we find
    that analysis more compelling). We therefore hold that under Iowa’s due
    process clause, the Iowa Constitution does not require the retroactive
    application of Heemstra to individuals whose direct appeals were final
    prior to the Heemstra decision.
    2. Iowa separation of powers clause.         The Iowa Constitution
    provides,
    The powers of the government of Iowa shall be divided into
    three separate departments—the legislative, the executive,
    and the judicial: and no person charged with the exercise of
    powers properly belonging to one of these departments shall
    exercise any function appertaining to either of the others,
    except in cases hereinafter expressly directed or permitted.
    Iowa Const. art. III, § 1.
    Nguyen argues that the Beeman decision that allowed defendants
    in Nguyen’s situation to be convicted of first-degree murder violated the
    separation of powers doctrine of the Iowa Constitution. Under Beeman
    20
    and its progeny, Nguyen and others like him were convicted of first-
    degree murder under the felony-murder doctrine when the act causing
    willful injury was the same act causing the victim’s death. See 
    Beeman, 315 N.W.2d at 776
    . In Heemstra, we overruled the Beeman line of cases
    and adopted the merger doctrine. 
    Heemstra, 721 N.W.2d at 558
    .
    Nguyen correctly asserts that defining crimes is a legislative
    function. He argues that the Beeman decision allowed defendants like
    himself to be convicted of first-degree murder for conduct the legislature
    did not intend to constitute that offense—namely, willful injury that was
    the same act that caused the victim’s death. He further contends that
    due to our decision in Heemstra, the Beeman decision was a judicial
    abrogation of the legislature’s definition of first-degree murder, which
    violated the separation of powers doctrine.
    The State responds that this is a “chicken and egg” argument and
    that it could be argued that either Heemstra or Beeman amounted to a
    violation of the separation of powers doctrine. However, the State asserts
    that rather than a violation of the separation of powers, Beeman was an
    attempt to interpret the law.         Although we later changed our
    interpretation of the law in Heemstra, the State responds that
    interpretational evolution happens often in the law.
    Further, we addressed this argument in our Heemstra opinion.
    First, we noted that
    nothing in any of the statutes . . . suggests that the
    legislature had any intent to abolish the principle of merger
    under the circumstances of this case. Furthermore, we
    should not defer to the legislature for a signal for us to adopt
    a legal principle that is the responsibility of the court and
    within the power of the court to apply, based on legal
    precedent, common sense, and fairness.
    
    Id. 21 We
    also stated that “[t]he legislature has never considered the
    issue of whether, when the act causing willful injury is the same as that
    causing death, the two acts should be deemed merged.”          
    Id. at 557.
    Because of this, we determined that we “should not attribute to the
    legislature an intent to ‘create[] an ever-expanding felony murder rule’ by
    characterizing every willful injury as a forcible felony for felony-murder
    purposes.” 
    Id. at 558
    (alteration in original) (quoting 4 Robert R. Rigg,
    Iowa Practice Series: Criminal Law § 3:16 (2006)).
    In Heemstra, we did not see our decision as encroaching on the
    legislative function in violation of the separation of powers. Because we
    effectively rejected this same argument in Heemstra, we now also reject
    the argument as applied to Beeman. In neither Heemstra nor Beeman
    did we encroach on the legislative branch.           Rather, we properly
    performed our function in interpreting the law by considering the
    legislative intent behind the first-degree murder statute and the felony-
    murder doctrine.
    3. Equal protection claims.   Both the Fourteenth Amendment to
    the United States Constitution and article I, section 6 of the Iowa
    Constitution provide all citizens equal protection under the law.     U.S.
    Const. amend. XIV; Iowa Const. art. I, § 6. This requires that “similarly
    situated persons be treated alike under the law.” Jud. Branch v. Iowa
    Dist. Ct., 
    800 N.W.2d 569
    , 578–79 (Iowa 2011) (quoting In re Det. of
    Williams, 
    628 N.W.2d 447
    , 452 (Iowa 2001)); see also City of Cleburne v.
    Cleburne Living Ctr., 
    473 U.S. 432
    , 439, 
    105 S. Ct. 3249
    , 3254, 
    87 L. Ed. 2d
    313, 320 (1985).     More precisely, “the equal protection guarantee
    requires that laws treat all those who are similarly situated with respect
    to the purposes of the law alike.” Varnum v. Brien, 
    763 N.W.2d 862
    , 883
    (Iowa 2009). Although we have “generally applied the same analysis to
    22
    federal and state equal protection claims, this court has not foreclosed
    the possibility that there may be situations where differences in the
    scope, import, or purpose of the two provisions warrant divergent
    analyses.”   In re Det. of Hennings, 
    744 N.W.2d 333
    , 338 (Iowa 2008)
    (quoting Racing Ass’n of Cent. 
    Iowa, 675 N.W.2d at 5
    ). Generally, when
    the parties have not argued that our analysis under the Iowa
    Constitution    should   differ   from    our analysis   under the   Federal
    Constitution, we decline to apply divergent analyses. See, e.g., State v.
    Wade, 
    757 N.W.2d 618
    , 624 (Iowa 2008).           However, Nguyen requests
    that based on the distinction between direct review and collateral review
    applications, we should provide greater protection under the Iowa
    Constitution.
    The Supreme Court has clearly stated that in situations such as
    these, it does not violate the federal constitution for states to choose to
    apply the holding of a case prospectively rather than retroactively. See
    Wainwright v. Stone, 
    414 U.S. 21
    , 23–24, 
    94 S. Ct. 190
    , 193, 
    38 L. Ed. 2d 179
    , 182 (1973); see also Hill v. Roberts, 
    793 F. Supp. 1044
    ,
    1045 (D. Kan. 1992) (“The decision of a state court to make a ruling
    retroactive or prospective raises no constitutional issue.”); Northrop v.
    Alexander, 
    642 F. Supp. 324
    , 327 (N.D. Cal. 1986) (“The retroactivity of a
    state change of law is a state question and ‘the federal constitution has
    no voice upon the subject.’ ”) (quoting Great N. Ry. Co. v. Sunburst Oil &
    Ref. Co., 
    287 U.S. 358
    , 364, 
    53 S. Ct. 145
    , 148, 
    77 L. Ed. 360
    , 366
    (1932)).
    A state in defining the limits of adherence to precedent may
    make a choice for itself between the principle of forward
    operation and that of relation backward. It may say that
    decisions of its highest court, though later overruled, are law
    none the less for intermediate transactions.
    23
    
    Wainwright, 414 U.S. at 23
    –24, 94 S. Ct. at 
    193, 38 L. Ed. 2d at 182
    (quoting Great N. 
    Ry., 287 U.S. at 364
    , 53 S. Ct. at 
    148, 77 L. Ed. at 366
    .
    Thus, we reject Nguyen’s assertion that our prospective-only application
    of Heemstra violates the federal Equal Protection Clause.
    The first step in our equal protection analysis under the Iowa
    Constitution is to determine whether there is a distinction made between
    similarly situated individuals. See 
    Varnum, 763 N.W.2d at 882
    .
    This requirement of equal protection—that the law must
    treat all similarly situated people the same—has generated a
    narrow threshold test. Under this threshold test, if plaintiffs
    cannot show as a preliminary matter that they are similarly
    situated, courts do not further consider whether their
    different treatment under a statute is permitted under the
    equal protection clause.
    
    Id. In Varnum,
    we noted that it is sometimes difficult to apply this
    threshold test and that we sometimes have “directly or indirectly infused
    [our] analysis with principles traditionally applied in the complete equal
    protection analysis.” 
    Id. at 884
    n.9. We have attributed the difficulty in
    applying the threshold test to the “inescapable relationship between the
    threshold test and the ultimate scrutiny of the . . . basis for the
    classification.” State v. Dudley, 
    766 N.W.2d 606
    , 616 (Iowa 2009).
    The State argues that Heemstra created two different classes of
    defendants: defendants whose convictions were final before the decision
    and defendants whose convictions became final after the decision. The
    State asserts that a person who was convicted before Heemstra is not
    similarly situated to a person charged with the same crimes after
    Heemstra changed the law.
    In Everett, this court heard a similar—though not identical—
    argument by a 
    defendant. 215 N.W.2d at 245
    –46.       In that case, the
    defendant was convicted of larceny of a motor vehicle. 
    Id. at 245.
    After
    24
    his conviction became final, the court heard two cases that changed the
    law. 
    Id. at 246.
    Had the defendant challenged his conviction after these
    cases rather than before, his conviction would have been reversed. 
    Id. Among other
    claims, the defendant challenged the difference between
    those whose convictions were final and those whose convictions were not
    yet final under the equal protection clause of the Iowa Constitution. 
    Id. We held
    that the defendant was not denied equal protection of the laws
    under the Iowa Constitution because we found “there is a rational basis
    for classifying appellants in accordance with whether their claim
    previously has been fully considered and adjudicated.”       
    Id. at 247.
    Because it is consistent with our previous cases to find that the
    distinction between direct review and collateral review applications does
    not violate the equal protection clause of the Iowa Constitution, we
    decline to adopt a more restrictive standard than that of the clause’s
    federal counterpart.
    We agree with the State that defendants whose convictions became
    final before the law changed in Heemstra are not similarly situated to
    defendants charged after Heemstra.      Nguyen was not denied equal
    protection of the laws under the Iowa Constitution.
    IV. Conclusion.
    For the reasons set forth above, we conclude that Nguyen’s
    postconviction counsel were not ineffective for failing to pursue a
    nonconstitutional, common law retroactivity argument.           We also
    conclude that the nonretroactive application of Heemstra does not violate
    the due process, separation of powers, or equal protection clauses of the
    Iowa Constitution or the Equal Protection Clause of the United States
    Constitution.
    DISTRICT COURT JUDGMENT AFFIRMED.