State of Minnesota v. Richard Ellis Hill, 871 N.W.2d 900

Hill was charged with aiding and abetting first-degree sale of methamphetamine after a controlled buy; two bags (Items 9A, 9B) ultimately tested positive for methamphetamine by the BCA and totaled ~12.025 grams.
The St. Paul Police Crime Lab initially handled the seized bags; the Crime Lab did preliminary handling and subsampling but did not perform the final confirmatory testing admitted at trial.
The BCA (an ASCLD-accredited lab) later received the items, followed standardized procedures, and produced GC-MS results confirming methamphetamine; Hill did not challenge BCA testing procedures or results.
At trial Hill objected to admission of the BCA results on grounds evidence may have been contaminated while at the Crime Lab; the district court applied chain-of-custody and the Frye-Mack foundational-reliability analysis and admitted the BCA results.
Hill sought on appeal (and here) a judicially-created rebuttable presumption that any evidence processed through the Crime Lab is contaminated unless the State proves otherwise; he argued this was required by substantive due process or the Court’s supervisory authority.
The Minnesota Supreme Court affirmed, declining to adopt a presumption of contamination either as a matter of substantive due process or supervisory rulemaking.

Issue	Hill's Argument	State's Argument	Held
Whether substantive due process requires a rebuttable presumption that evidence handled by the Crime Lab is contaminated	Crime Lab’s substandard operations created a substantial likelihood of contamination; due process requires presuming contamination unless State proves otherwise	No constitutional right to a blanket presumption; no shocks-the-conscience government misconduct here; existing standards (chain-of-custody, Frye‑Mack) suffice	Denied — no substantive due process violation and no requirement to adopt presumption
Whether the court should adopt a supervisory-rule presumption of contamination to ensure fair administration of justice	Judicial supervision is warranted to protect defendants when a lab’s operations are unreliable	Supervisory powers should be exercised only in exceptional, statewide-impact circumstances; Legislature and existing rules address lab standards	Denied — supervisory powers not invoked; circumstances not exceptional or statewide
Admissibility standard for BCA results where evidence passed through Crime Lab	(Trial issue) Crime Lab handling made BCA results unreliable	District court should apply chain-of-custody to untested items and Frye‑Mack second prong to BCA testing	Court found district court properly applied chain-of-custody and Frye‑Mack; Hill did not seek new trial on those bases

State v. Netland, 762 N.W.2d 202 (Minn. 2009) (standard of review and cautious approach to expanding substantive due process)
County of Sacramento v. Lewis, 523 U.S. 833 (1998) (shocks-the-conscience standard for executive action)
Rochin v. California, 342 U.S. 165 (1952) (examples of conscience‑shocking government conduct)
Napue v. Illinois, 360 U.S. 264 (1959) (State may not knowingly use false evidence)
State v. Bailey, 677 N.W.2d 380 (Minn. 2004) (Frye‑Mack two‑prong foundational reliability test)
Ex parte Coty, 418 S.W.3d 597 (Tex. Crim. App. 2014) (adopted burden‑shifting presumption in response to intentional technician misconduct)
Commonwealth v. Scott, 5 N.E.3d 530 (Mass. 2014) (presumption based on repeated, egregious laboratory technician misconduct)
State v. Johnson, 239 N.W.2d 239 (Minn. 1976) (chain‑of‑custody authentication standard)