People v. Heineman
216 N.E.3d 204
Ill.2023Background
- Single-vehicle crash on June 26, 2016 killed passenger Tanya McDonough; Ryan J. Heineman was indicted for two counts of aggravated DUI (one count alleging BAC ≥ 0.08).
- ED records show a serum alcohol test taken ≈7:17 a.m. recorded 155 mg/dL (0.155 g/dL); no whole-blood test was performed.
- Officer Marc Fisher testified (over defense objection) that he was familiar with 20 Ill. Adm. Code 1286.40 and applied its 1.18 conversion factor to divide 0.155 by 1.18 to get a whole-blood equivalent of 0.131. Trial court admitted that testimony and refused a limiting jury instruction.
- Jury convicted Heineman on both counts; the trial court merged counts and sentenced him to six years. Appellate court affirmed convictions but vacated sentence because the trial court abused its discretion in denying a posttrial motion to substitute counsel.
- Illinois Supreme Court granted review and held (1) Fisher’s lay testimony conveying the 1.18 conversion factor was inadmissible to prove the scientific fact of whole-blood BAC, reversing conviction on the statutory BAC count (count I); (2) the erroneous admission was harmless as to the “under the influence” count (count II), which was affirmed; and (3) the remand for posttrial substitution-of-counsel proceedings was affirmed.
Issues
| Issue | State's Argument | Heineman's Argument | Held |
|---|---|---|---|
| Admissibility of lay testimony about 1.18 conversion factor (20 Ill. Adm. Code 1286.40) to prove whole-blood BAC | Fisher lawfully conveyed the regulation; conversion is simple math any juror can do; judicial notice/administrative rule supports admission | Conversion factor is a scientific fact derived from toxicology and population variance; only expert proof (or judicial notice with instruction) may establish it | Testimony inadmissible: conversion factor is a scientific fact beyond lay knowledge; expert proof required (unless court properly takes judicial notice) — conviction on count I reversed |
| Effect on count II (whether error was prejudicial) | Error harmless: overwhelming non-BAC evidence (eyewitness drinking testimony, nurse/physician observations, defendant’s statements, serum level) supports an "under influence" conviction | Evidence was closely balanced; concussion and time lag undermine reliability; admission caused grave prejudice | Harmless error: remaining evidence overwhelmingly supports conviction on count II — conviction affirmed |
| Denial of posttrial motion to substitute counsel | Trial court reasonably found delay tactic | Sixth Amendment right to counsel of choice; trial court abused discretion in denying substitution | Appellate court was correct to vacate sentence and remand for new posttrial proceedings; Supreme Court affirmed that relief |
| Effect of judicial notice of 20 Ill. Adm. Code 1286.40 on need for expert testimony | Judicial notice of the regulation (a matter of law) would remove need for expert proof of the factor | Judicial notice only establishes the rule’s existence, not the scientific truth of the conversion factor; jury must be instructed it may but need not accept a judicially noticed fact | Court may judicially notice the regulation’s existence, but that does not convert the scientific question into an adjudicative fact; judicial notice does not replace the need for expert proof of scientific truth and requires a permissive jury instruction if used |
Key Cases Cited
- People v. Stipp, 349 Ill. App. 3d 955 (2004) (lab technician lay testimony discussed in context of serum-to-whole-blood conversion)
- People v. Thoman, 329 Ill. App. 3d 1216 (2002) (judicial notice or expert testimony commonly used to establish conversion factor)
- People v. Olsen, 388 Ill. App. 3d 704 (2009) (court may judicially notice section 1286.40; judicial notice creates a permissive presumption)
- People v. Green, 294 Ill. App. 3d 139 (1998) (explains physiological differences between serum and whole blood and variability in conversion)
- People v. Menssen, 263 Ill. App. 3d 946 (1994) (scientific literature supports a serum-to-whole-blood conversion range of about 1.12–1.20)
- People v. McKown, 226 Ill. 2d 245 (2007) (scientific evidence generally requires expert explanation to be meaningful to jurors)
- Kean v. Wal-Mart Stores, Inc., 235 Ill. 2d 351 (2009) (administrative regulations have the force and effect of law)
- People v. Wilkerson, 87 Ill. 2d 151 (1981) (harmless-error standard: conviction may stand when remaining evidence overwhelmingly supports guilt)