Michigan Clarifies Feezel: Victim BAC Is Admissible When Combined with Other Conduct It Tends to Prove Gross Negligence and a Superseding Cause

I. Introduction

People of Michigan v. Michael Marc Morgan (Mich Sup Ct, June 24, 2026) addresses a recurring evidentiary and causation question in vehicle-code homicide prosecutions: when, if ever, may a defendant introduce evidence that the decedent was intoxicated to contest proximate cause by arguing the decedent’s conduct was a superseding cause due to gross negligence.

Defendant Michael Marc Morgan was charged with moving violation causing death, MCL 257.601d(1), following a collision that killed motorcyclist Donald D. Arnold. Eyewitnesses described Arnold accelerating quickly from a green light; Morgan was executing a U-turn when the motorcycle struck the side of Morgan’s vehicle. Morgan sought to admit (1) evidence Arnold may have been traveling up to 20 mph over the posted limit and (2) toxicology evidence suggesting Arnold’s BAC at the time of the collision may have been approximately 0.071 to 0.081 g/dL (based on retrograde extrapolation from a post-mortem reading of 0.059 g/dL taken roughly 75 minutes after the crash).

The district court admitted the speed evidence but excluded the BAC evidence. The Court of Appeals affirmed, reading People v Feezel as requiring a preliminary showing of gross negligence before intoxication evidence becomes admissible. The Michigan Supreme Court reversed, holding the district court abused its discretion by excluding the BAC evidence.

II. Summary of the Opinion

The Supreme Court (Justice Hood, joined by the Chief Justice and five Justices) held that the district court abused its discretion by excluding evidence of the decedent’s possible intoxication. Applying People v Feezel, the Court clarified that evidence of a victim’s BAC is relevant if it has any tendency to make the victim’s gross negligence more or less probable—particularly when considered alongside other admissible conduct bearing on causation (here, alleged speeding/rapid acceleration).

The Court further held the evidence was not excludable under MRE 403 because its probative value on proximate cause outweighed any unfair prejudice. A key error was the district court’s “siloed” approach: evaluating BAC in isolation rather than as part of the totality of evidence informing whether the victim’s conduct constituted gross negligence and thus a superseding cause. The Supreme Court reversed the Court of Appeals, vacated the exclusion order, and remanded.

Dissent (Justice Zahra): The dissent would have affirmed, reasoning that mild-to-moderate intoxication plus possible speeding/quick acceleration showed, at most, ordinary negligence—insufficient to create a jury-submissible gross-negligence question—and that the BAC evidence carried substantial risk of unfair prejudice under MRE 403. The dissent also emphasized the abuse-of-discretion standard.

III. Analysis

A. Precedents Cited

  • People v Feezel, 486 Mich 184 (2010)
    Role in Morgan: This was the controlling framework for admitting victim-intoxication evidence in a proximate-cause dispute. The Supreme Court in Morgan treated Feezel as establishing a broad relevance threshold: evidence of the victim’s BAC is relevant if it has any tendency to make gross negligence more or less probable.

    Key clarification: The Court rejected a rigid reading that requires the defendant to establish gross negligence from non-intoxication conduct first, before BAC evidence can be considered. Instead, Morgan emphasizes that intoxication and conduct can be mutually informative and should be assessed together under the “totality” concept that pervades proximate-cause analysis.

    Continuity with Feezel: Morgan preserves Feezel’s caution that “any level of intoxication” is not automatically relevant and that intoxication “by itself” is not gross negligence, but it insists trial courts must not analyze BAC “in a silo” when other admissible conduct is in evidence.
  • People v Schaefer, 473 Mich 418 (2005)
    Role in Morgan: Supplied the modern formulation of proximate cause as a “legal construct” limiting liability where causation is too remote, and the intervening/superseding cause framework. Morgan relies on Schaefer to describe proximate cause as requiring a “direct and natural result” and to frame superseding causes through foreseeability.
  • People v Barnes, 182 Mich 179 (1914)
    Role in Morgan: Provided the foundational gross-negligence discussion in the traffic context—especially that a mere speed-limit violation is not per se gross negligence, and that gross negligence depends on circumstances. Morgan invokes Barnes to underscore why “speeding alone” may be insufficient, but also why higher speeds can contribute to a gross-negligence finding depending on context.
  • People v McCoy, 223 Mich App 500 (1997)
    Role in Morgan: Reinforced the “totality of the circumstances” approach and rejected simplistic speed-limit comparisons. Morgan uses McCoy to support the proposition that speed evidence’s relevance turns on actual speed, posted limit, and surrounding circumstances—and is ordinarily a jury question.
  • People v McDaniel, 469 Mich 409 (2003)
    Role in Morgan: Provided the abuse-of-discretion standard for evidentiary rulings, anchoring the Supreme Court’s authority to reverse if the exclusion fell outside the range of principled outcomes.
  • People v Crawford, 458 Mich 376 (1998)
    Role in Morgan: Supplied the materiality/probativeness structure of relevance under MRE 401, including that the probative threshold is “minimal.” This supported admitting BAC evidence once it plausibly bore on proximate cause.
  • People v Wager, 460 Mich 118 (1999)
    Role in Morgan: Cited to explain “retrograde extrapolation” as a recognized method to estimate BAC at an earlier time. Morgan did not decide the reliability dispute about the extrapolated BAC; it limited its holding to relevance and MRE 403 balancing while leaving other admissibility challenges open on remand.
  • People v Leffew, 508 Mich 625 (2022)
    Role in Morgan: Used by the majority as an analogy for a low threshold to present a theory to the jury even when evidence is weak or credibility is disputed—here, emphasizing that the prosecution bears the burden to prove proximate cause beyond a reasonable doubt.
  • People v Dupree, 486 Mich 693 (2010) and People v Lemons, 454 Mich 234 (1997) (dissent)
    Role in Morgan: The dissent invoked these cases for the proposition that defendants must produce sufficient evidence to put certain defenses (self-defense, duress) before the jury, arguing the “gross negligence” theory likewise required a stronger showing before BAC evidence should be admitted.
  • People v Sharpe, 502 Mich 313 (2018), People v Mardlin, 487 Mich 609 (2010), and People v Blackston, 481 Mich 451 (2008) (dissent)
    Role in Morgan: The dissent emphasized deference to trial court discretion on evidentiary calls and argued that, even if exclusion were debatable, it was not outside the principled range of outcomes.

B. Legal Reasoning

  1. Causation under MCL 257.601d(1) includes factual and proximate causation.
    The Court reiterated that the prosecution must prove both “but for” causation and proximate causation. Proximate causation turns on whether the death was the “direct and natural result” of the moving violation, without an intervening cause that superseded the defendant’s conduct.
  2. Superseding cause depends on foreseeability; gross negligence can sever the chain.
    Ordinary negligence is generally foreseeable and therefore not superseding; gross negligence or intentional misconduct is not reasonably foreseeable and can break the causal link. This makes evidence bearing on whether the decedent was grossly negligent potentially central to proximate cause.
  3. Relevance (MRE 401) required considering BAC and conduct together.
    The district court’s key mistake, as framed by the Supreme Court, was evaluating BAC evidence “standing alone.” Under Feezel, BAC evidence is not automatically relevant, but it becomes relevant when it has any tendency to make the victim’s gross negligence more or less probable. Here, because the district court admitted evidence that the decedent may have been speeding/accelerating rapidly, the BAC evidence became probative of how the decedent perceived risk and reacted—core considerations in “wantonness” analysis.
  4. MRE 403 balancing favored admission.
    The Court held the evidence went “to the heart” of the disputed proximate-cause element and was therefore highly probative. It also deemed unfair prejudice relatively low, especially given that the jury would already hear speed/acceleration evidence and would be tasked with evaluating causation in a charged fact pattern. The Court treated the trial court’s asymmetric approach—admitting speed evidence while excluding BAC without clear rationale—as further evidence the ruling fell outside a principled range.
  5. Procedural posture mattered: the Court did not decide all admissibility issues.
    The Court expressly limited its holding to relevance and MRE 403 and left room for other challenges (e.g., scientific reliability of retrograde extrapolation, expert foundation, or other evidentiary limits) on remand.

C. Impact

1) Clarifies what “Feezel relevance” requires in practice.
Morgan reduces the likelihood that trial courts will exclude victim-intoxication evidence based on a rigid sequencing rule (i.e., demanding “gross negligence” be shown first through non-BAC conduct). Instead, courts are instructed to evaluate intoxication evidence as part of a combined factual mosaic bearing on gross negligence and superseding cause.

2) Encourages “totality” reasoning in proximate-cause evidentiary rulings.
The decision signals that when some victim-conduct evidence (like speed/acceleration) is admitted to contest proximate cause, related evidence (like intoxication) may be necessary for the jury to evaluate that conduct’s meaning—particularly risk perception and reaction time.

3) Likely increases admissibility of BAC evidence in vehicle-code death cases.
In prosecutions under MCL 257.601d(1) and other Michigan Vehicle Code crimes where proximate cause is contested, defendants will cite Morgan to argue that BAC evidence is relevant whenever paired with additional victim conduct arguably bearing on gross negligence (speed, lane positioning, reaction, nighttime conditions, road hazards).

4) Tightens trial-court explanation expectations under MRE 403.
While the Supreme Court did not impose a formal articulation requirement, its critique of “without a clear rationale” exclusion suggests that uneven treatment of related causal evidence (speed in, BAC out) will be vulnerable on appeal.

5) Leaves room for future fights over scientific proof and “how much is enough.”
The dissent previews a future battleground: whether “mild/moderate” intoxication plus modest speeding can ever be gross negligence. Morgan does not decide that merits question; it decides jury access to the evidence. Future cases may refine the practical boundary between ordinary negligence (foreseeable) and gross negligence (superseding) in mixed intoxication-and-speed scenarios.

IV. Complex Concepts Simplified

Moving violation causing death (MCL 257.601d(1))
A misdemeanor that applies when someone commits a traffic “moving violation” and that violation is the proximate cause of another person’s death.
Factual causation vs. proximate causation
Factual (“but for”) causation asks: would the death have happened but for the defendant’s conduct?
Proximate causation asks: is the defendant’s conduct close enough, in a legal sense, to be held responsible—or did something else intervene in a way that breaks the chain?
Intervening cause vs. superseding cause
An intervening cause is something that happens between the defendant’s act and the harm. It becomes superseding (breaking the chain) only if it is not reasonably foreseeable—often described in these cases as the victim’s gross negligence or intentional misconduct.
Gross negligence (in this context)
More than ordinary carelessness. The Court describes it as “wantonness and disregard of the consequences”—conduct suggesting awareness of risk but indifference to outcomes.
MRE 401 / 402 / 403
MRE 401: Evidence is relevant if it makes a consequential fact even slightly more or less likely.
MRE 402: Relevant evidence is generally admissible; irrelevant evidence is not.
MRE 403: Even relevant evidence may be excluded if its probative value is substantially outweighed by risks like unfair prejudice or misleading the jury.
Retrograde extrapolation
A method used to estimate BAC at an earlier time based on a later measurement and assumptions about alcohol absorption and elimination. Morgan treats this as potentially admissible in principle but leaves reliability disputes for remand.

V. Conclusion

People v Morgan re-centers Michigan’s victim-intoxication evidence doctrine on context and totality. The Supreme Court held that, under People v Feezel, victim BAC evidence is relevant when—together with other admissible evidence of victim conduct—it has any tendency to make gross negligence (and thus a superseding cause defeating proximate causation) more or less probable. Trial courts may not evaluate BAC evidence in isolation where it meaningfully informs the jury’s causation analysis, and MRE 403 does not justify exclusion when the evidence is central to the proximate-cause dispute and unfair prejudice is comparatively low.

The decision’s practical significance is procedural but powerful: it broadens jury access to combined conduct-and-intoxication proof in vehicle-death prosecutions, while leaving the ultimate question—whether the victim’s behavior was actually grossly negligent—to the fact-finder under proper instructions and a complete evidentiary record.