State v. Wasuge: Race and Ethnicity Are Permissible, Objective Factors in Washington’s Miranda Custody “Totality of the Circumstances” Test

Introduction

State v. Wasuge addresses two recurring issues in impaired-driving litigation: (1) when expert toxicology testimony crosses the line into inadmissible, potentially guilt-opinion evidence, and (2) how courts determine whether a suspect is “in custody” for Miranda v. Arizona purposes, particularly in roadside or community-caretaking encounters.

Ahmed Mohamud Wasuge was prosecuted under the “affected by” prongs of Washington’s DUI and physical-control statutes (RCW 46.61.502(1)(c) and RCW 46.61.504(1)(c)), which require proof that alcohol lessened the person’s ability to drive “in any appreciable degree.” The jury did not unanimously convict on felony DUI but convicted on the lesser included offense of being in actual physical control while under the influence/affected, along with ignition-interlock and license-revocation offenses.

On review, the Supreme Court affirmed. It held that any error in admitting the State toxicologist’s testimony about the American Medical Association’s recommended 0.05 BAC “cutoff” was harmless under either constitutional or nonconstitutional harmless-error standards. Separately—and most notably as a prospective rule—the Court held that Washington courts are not precluded from considering race and ethnicity, when supported by relevant and objective evidence, as part of the “totality of the circumstances” Miranda custody analysis.

Summary of the Opinion

1) Expert toxicology testimony (AMA 0.05 recommendation)

The Court assumed, without deciding, that the toxicologist’s testimony about impairment at 0.05 BAC was improperly admitted. Even so, it concluded the error was harmless because the properly admitted evidence of impairment was overwhelming (odor of alcohol, physical signs, poor FST performance, admission of drinking, and BAC of 0.076).

2) Miranda custody and race/ethnicity

The Court held Wasuge was not in custody when he answered deputies’ early questions (whether he had been drinking and why he was asleep in the car), given the brief, public, roadside/community-caretaking context and absence of coercive restraints.

Importantly, the Court clarified that race and ethnicity may be considered—when supported by “relevant and objective” evidence—within the Miranda “totality of the circumstances” custody inquiry. The opinion rejects any categorical exclusion of those factors from the objective custody test.

Analysis

Precedents Cited

The opinion draws from two main doctrinal lines: (a) evidentiary discretion and harmless error, and (b) Miranda custody in traffic-stop and community-caretaking contexts, including how “objective” custody factors are defined.

A. Evidentiary discretion and harmless error

• State v. Demery and State v. Neal: The Court restates Washington’s abuse-of-discretion framework for evidentiary rulings, including that a ruling “contrary to law” constitutes an abuse of discretion.
• State v. Stenson: Provides the oft-quoted definition of abuse of discretion as “manifestly unreasonable or based on untenable grounds or reasons.”
• State v. Magana-Arevalo: The Court relies on its contemporaneous clarification of constitutional harmless error. The test requires consideration of (1) the “corrosive impact” of the constitutional error (including how it may alter the fact finder’s view of properly admitted evidence), and (2) the strength of properly admitted evidence, followed by whether the State proved harmlessness beyond a reasonable doubt. Although the Court did not decide whether the toxicologist testimony was a constitutional error, it used this framework to show harmlessness either way.
• State v. Goggin and State v. Calegar: Supply the nonconstitutional harmless-error standard—whether, within reasonable probabilities, the outcome would have been materially affected.
• State v. Bourgeois: Supports the proposition that improperly admitted evidence may be harmless when minor compared to overwhelming evidence as a whole.
• State v. Arndt: Reinforces the “affected by” element the State chose to prove—impairment “in any appreciable degree”—which heightens the importance of impairment evidence beyond any per se BAC rule.

B. Miranda custody, community caretaking, and “objective” totality-of-circumstances factors

• Miranda v. Arizona: The baseline rule: statements from custodial interrogation are inadmissible absent warnings.
• State v. Escalante: Provides Washington’s contemporary articulation of Miranda custody as an objective inquiry and identifies common custody factors (location, duration, restraints, coercion, ability to terminate encounter).
• State v. Boisselle and State v. Kinzy: Frame “community caretaking” as a legitimate, noncriminal function (e.g., assisting stranded motorists), while requiring reasonable scope and termination once the noncriminal justification is dispelled.
• Berkemer v. McCarty: Central to the Court’s analysis. Ordinary traffic stops—even with roadside questioning and FST requests—are generally noncustodial due to brevity, public setting, and limited police domination.
• United States v. Brignoni-Ponce and Terry v. Ohio: Cited through Berkemer v. McCarty for the principle that inquiries must remain reasonably related in scope to the justification for initiation.
• State v. Acrey: Adds Washington-specific balancing of individual freedom from police interference against the public interest in caretaking.
• State v. Heritage: Confirms Washington’s adoption of the “Berkemer test” for Miranda custody.
• State v. Mecham (plurality opinion) and Heinemann v. Whitman County: Support the general proposition that FSTs can be lawful seizures when supported by reasonable suspicion, situating roadside DUI procedures within established seizure/custody doctrine.
• J.D.B. v. North Carolina: The key authority for the Court’s anti-exclusion principle: the Supreme Court has not excluded relevant, objective circumstances from custody analysis merely to make the line “brighter.” This underwrites Washington’s conclusion that race/ethnicity may be considered when relevant and objective.
• United States v. FNU LNU, along with Delaware v. Prouse, State v. Warner, Howes v. Fields, and State v. Templeton: Cited as part of the broader “holistic” custody framework considering context, restraints, and the nature of questioning.

Legal Reasoning

1) “Affected by” prosecutions and the limited role of BAC

The Court stresses a structural point about Washington DUI law: under the “affected by” prong, the State need not prove a 0.08 BAC, but must prove appreciable impairment. This matters because the toxicologist’s AMA-based testimony potentially risked importing a quasi–per se “cutoff” into a case that legally turns on functional impairment, not a numerical threshold.

Even while recognizing the likely influence of an AMA recommendation delivered by a trained expert, the Court anchored harmlessness in the breadth of nonexpert impairment indicators: odor, demeanor, balance/coordination, speech, eyes, FST performance, admission of drinking, and BAC. The Court thus treated the challenged testimony as incremental rather than outcome-determinative.

2) Miranda custody: community caretaking evolving into DUI investigation

The opinion treats the deputies’ initial engagement as community caretaking: responding to a car blocking a lane with an apparently unconscious driver, engine idling and transmission in drive. The “boxing in” of the vehicle is contextualized as a safety measure rather than an arrest-like restraint.

Applying the objective, totality-of-the-circumstances test drawn from State v. Escalante and Berkemer v. McCarty, the Court emphasizes: the short duration (about 20 minutes to arrest), the public setting, lack of threats, no handcuffs or patrol-car placement, and the functional nature of roadside questioning. Those features kept the interaction on the noncustodial side of the Miranda line.

3) Race and ethnicity as custody factors: “relevant and objective” evidence

The Court’s most forward-looking reasoning is its refusal to categorically bar race and ethnicity from the Miranda custody calculus. Citing J.D.B. v. North Carolina, it reasons that custody analysis has never excluded circumstances that are both relevant and objective. In other words, “objectivity” is not synonymous with ignoring social context; rather, it requires that any consideration be anchored in evidence capable of evaluation without turning custody into a purely subjective inquiry.

The Court simultaneously limits the doctrine: race/ethnicity are not automatically dispositive, and the defendant must present “relevant and objective” evidence at the suppression hearing. Here, it did not matter because (a) Wasuge was not in custody under traditional factors and (b) the record did not supply objective evidence supporting a race/ethnicity-based custody inference.

Impact

1) Miranda litigation in Washington: record development and “objective” racial context

Practically, State v. Wasuge invites (and implicitly requires) more developed suppression records. Defense counsel seeking to invoke race/ethnicity must translate lived experience into “relevant and objective” proof—e.g., specific officer statements, conduct, deployment of force, differential treatment, or other concrete circumstances that would affect how a reasonable person in the suspect’s position would perceive freedom to terminate the encounter. Trial courts must decide when and how such evidence meaningfully bears on the custody question without collapsing it into subjectivity.

2) Harmless error: reinforcing a two-part constitutional inquiry

By expressly pointing to State v. Magana-Arevalo, the Court signals that constitutional harmless-error review in Washington is not merely “overwhelming evidence” rhetoric. Courts must consider “corrosive impact” (how the error could skew evaluation of other evidence) alongside strength of the admissible case. Even though the Court avoided classifying the error as constitutional here, future litigants can leverage this clarified framework to argue that certain errors contaminate the fact finder’s view of otherwise admissible proof.

3) DUI “affected by” cases: limits on quasi–per se expert messaging

The decision tacitly cautions prosecutors against using experts to smuggle legislative-policy debates (such as lowering per se limits) into “affected by” trials. Even when errors are found harmless on a strong record, the Court’s discussion underscores that generalized impairment-at-.05 opinions can be highly influential and therefore risky under the Rules of Evidence—especially where the State elected not to proceed under a per se prong.

Complex Concepts Simplified

• “Per se” vs. “affected by” DUI: “Per se” DUI is proved mainly by a number (e.g., BAC ≥ 0.08 within two hours). “Affected by” DUI/physical control is proved by impairment—alcohol lessened driving ability “in any appreciable degree”—even if BAC is below 0.08.
• “Actual physical control”: You can be guilty without driving if you are in control of a vehicle (e.g., in the driver’s seat with the engine running), depending on circumstances.
• Miranda “custody”: Miranda warnings are required only when a reasonable person in the suspect’s position would feel their freedom was restrained to the degree associated with a formal arrest. Many traffic-stop interactions remain noncustodial.
• Community caretaking: Police may contact people to address safety needs (like a disabled car blocking traffic). That justification must be limited in scope and ends when the safety reason is dispelled.
• Harmless error: Even if a judge made a mistake admitting evidence, a conviction stands if the appellate court concludes the mistake did not matter enough to affect the verdict under the applicable standard (nonconstitutional vs constitutional).
• Race/ethnicity as “objective” factors: The Court allows consideration of race/ethnicity only when tied to evidence that can be evaluated objectively in the situation—not merely a subjective feeling—within the overall circumstances.

Conclusion

State v. Wasuge affirms a DUI-related conviction while delivering two significant clarifications. First, it reinforces that even potentially influential expert testimony can be harmless where admissible impairment evidence is overwhelming, and it links Washington’s constitutional harmless-error analysis to the “corrosive impact” framework articulated in State v. Magana-Arevalo. Second—and most consequential for criminal procedure—it establishes that Washington courts may consider race and ethnicity as part of the Miranda custody “totality of the circumstances” test when supported by relevant and objective evidence, rejecting any categorical rule that would exclude those circumstances from an otherwise holistic, objective inquiry.