970 F.3d 650
6th Cir.2020Background
- On March 7, 2016, Jacob Castro-White died of a fentanyl overdose after sharing drugs with Zaharias Karaplis that Karaplis testified he purchased from Russell “Red” Davis shortly after midnight. Cell-site data, call/text records, and witness ID linked Davis to the transaction.
- Davis was indicted on fentanyl distribution (21 U.S.C. § 841(a)) and charged with a statutory "death-results" enhancement that, because of a prior felony drug conviction, carried a mandatory life sentence. He was convicted and received life imprisonment.
- At trial the government relied heavily on phone records and testimony (Karaplis, Stock), and the coroner testified fentanyl was the but‑for cause of death. Davis argued someone else supplied the drugs and contested several evidentiary and procedural rulings.
- Davis appealed, challenging (1) the interpretation and application of the § 841(b)(1)(C) death‑results enhancement, (2) admissibility of the coroner’s opinion under Daubert, (3) the district court’s supplemental answer to a jury question about “on or about,” and (4) the validity of the search warrant used to seize his phone and effects.
- The Sixth Circuit upheld every issue on the merits except it accepted the government’s concession that the affidavit alone lacked probable cause to tie Davis to the Garden Avenue residence; the government claimed unrecorded oral testimony before the magistrate supplied the missing facts.
- The court remanded for a limited evidentiary hearing on whether the affiant provided additional sworn oral testimony to the magistrate that, when added to the affidavit, established probable cause; all other claims were denied.
Issues
| Issue | Davis's Argument | Government's Argument | Held |
|---|---|---|---|
| Scope of § 841(b)(1)(C) death‑results enhancement | Enhancement applies only if defendant directly delivered the fatal drug to the decedent or provided it via a coconspirator | Enhancement requires only that the drug the defendant distributed was the but‑for cause of the death; no direct buyer‑victim link required | Enhancement applies without a direct buyer‑victim relationship; jury instruction and conviction upheld |
| Sufficiency of evidence for death‑results enhancement | Evidence insufficient because Davis didn’t directly sell to Castro‑White | Phone records, witness testimony, and coroner testimony support that the fentanyl Davis distributed was the but‑for cause of death | Evidence sufficient when viewed in light most favorable to prosecution |
| Coroner’s Daubert challenge to causation testimony | Coroner’s opinion unreliable because no autopsy was performed | Coroner performed a reliable differential diagnosis using scene, lab results, and history; autopsy not always required | No plain error; expert testimony admissible under Daubert framework |
| Validity of search warrant / probable cause | Affidavit lacked facts tying Davis/phone to the residence; magistrate possibly lacked authority; Franks hearing warranted | Government concedes affidavit alone was deficient but says affiant gave additional sworn oral testimony to the magistrate that completed probable cause | Magistrate‑authority claim not plain error; remand ordered for limited evidentiary hearing to determine whether oral sworn testimony supplemented the affidavit and established probable cause |
Key Cases Cited
- Burrage v. United States, 571 U.S. 204 (Supreme Court) ("results from" requires but‑for causation)
- Jeffries, 958 F.3d 517 (6th Cir.) (statutory death‑results enhancement does not require proximate causation or a close defendant‑victim link)
- Swiney v. United States, 203 F.3d 397 (6th Cir.) (application of enhancement in § 846 conspiracy context)
- Hamm, 952 F.3d 728 (6th Cir.) (treatment of coconspirator liability under § 841 and § 846 theories)
- Stirone v. United States, 361 U.S. 212 (constructive amendment doctrine)
- Warshak, 631 F.3d 266 (6th Cir.) (application of constructive amendment/variance analysis)
- Daubert v. Merrell Dow Pharm., 509 U.S. 579 (expert‑testimony admissibility standard)
- Best v. Lowe’s Home Ctrs., Inc., 563 F.3d 171 (6th Cir.) (differential diagnosis framework for medical causation)
- Tamraz v. Lincoln Elec. Co., 620 F.3d 665 (6th Cir.) (differential etiology accepted for medical causation)
- Hang Le‑Thy Tran, 433 F.3d 472 (6th Cir.) (oral sworn testimony may supplement an affidavit to establish probable cause)
- Carpenter, 360 F.3d 591 (6th Cir.) (nexus requirement between place to be searched and alleged criminal activity)
- Patton, 962 F.3d 972 (7th Cir.) (Fourth Amendment does not require recorded testimony; oral testimony can be considered)
- Franks v. Delaware, 438 U.S. 154 (Franks hearing standard for alleged false/omitted statements in warrant affidavits)