Background
Dave LaPorte was convicted of second-degree murder, abandonment or concealment of a dead body, and tampering with physical evidence after killing his wife in October 2019 and leaving her body in a ditch. At sentencing, both parties and the trial court operated under the mistaken belief that LaPorte had a prior aggravated DUI conviction that qualified as a “forever prior” under A.R.S. § 13-105(22)(iv). In fact, the conviction was for attempted aggravated DUI—a critical distinction that rendered it ineligible as an aggravating circumstance or sentence enhancer.
On LaPorte’s first appeal, the Court of Appeals vacated his sentences and issued a mandate specifically limiting the trial court’s discretion on remand to “imposing a sentence either at or below the presumptive for all three convictions.” The State did not seek review by the Arizona Supreme Court. However, after the mandate issued, the trial court concluded that the appellate court’s decision was “clearly erroneous,” impaneled a new jury to find aggravating factors, and again sentenced LaPorte to aggravated terms totaling 28.5 years—directly contrary to the mandate.
The Court’s Holding
The Court of Appeals vacated LaPorte’s sentences a second time, holding that the trial court violated the appellate mandate by sentencing LaPorte above the presumptive term. Vice Chief Judge Eppich, writing for a unanimous panel, reaffirmed that under Arizona’s mandate rule, a trial court is “absolutely bound” by an appellate court’s decision and mandate. The court rejected the State’s argument that the mandate’s explanatory “Because” clause created an opening for the trial court to impanel a jury to find new aggravating factors, distinguishing between the mandate’s prefatory rationale and its operative command—drawing a structural parallel to the U.S. Supreme Court’s analysis in District of Columbia v. Heller.
The court also rejected the trial court’s reliance on three purported exceptions to the mandate rule: changed evidence, manifest injustice, and legal error. On changed evidence, the court noted the missing in-chambers transcript had existed all along and had been presented to the appellate court in a motion for reconsideration—which was denied. On manifest injustice, the court emphasized that sentencing ranges are for the legislature, not the courts, and that victims could still be heard at sentencing within the presumptive range. On legal error, the court held that a trial court simply cannot second-guess an appellate mandate, “right or wrong,” citing Vance v. Vance and Tovrea v. Superior Court.
Key Takeaways
- Arizona trial courts are absolutely bound by appellate mandates and may not substitute their own judgment as to the proper remedy, even if they believe the appellate decision was erroneous—the mandate controls “right or wrong.”
- The only recognized exceptions permitting a trial court to depart from a mandate are an intervening change in law by the legislature or a higher court, or when the prior decision was not on the merits—neither of which applied here.
- If the State is dissatisfied with an appellate decision, the proper remedy is to seek review by the Arizona Supreme Court, not to persuade the trial court to disregard the mandate on remand.
- The court drew a notable interpretive parallel to Heller, distinguishing prefatory clauses (explaining the rationale) from operative clauses (containing the binding directive) within a mandate.
Why It Matters
This published opinion is a strong reinforcement of the mandate rule in Arizona criminal cases. It sends an unambiguous message to trial courts that disagreement with an appellate ruling—no matter how strongly felt—does not authorize departure from a clear directive on remand. The decision is particularly significant because the trial court here offered detailed reasoning for its departure, invoking multiple exceptions to the law of the case doctrine, and the Court of Appeals rejected each one. For practitioners, the opinion underscores that appellate mandates must be challenged through proper channels (petition for review to the Supreme Court) before a mandate issues, not relitigated in the trial court after the fact.