951 F.3d 901
8th Cir.2020Background:
- Confidential informant told police Welch stored guns and drugs at a house on Aldrich Ave N; gave a general physical description.
- Officer matched the tip to a DMV photo for "Chris Maurice Welch," surveilled the house, obtained a search warrant, and saw Welch at/near the house.
- Search of the house uncovered four guns, synthetic marijuana (some packaged for sale), three broken cellphones in the bedroom where Welch was found; police later found another gun and drugs in a car outside.
- After arrest and Miranda warnings, Officer Werner requested a cheek swab; Welch said his DNA was already in the system and then cooperatively submitted to the swab without being told he could refuse.
- DNA testing linked Welch to a Ruger .22 recovered in the house; one month later Welch was found in his car with two bags of the same synthetic marijuana found in the house.
- Welch was charged under 18 U.S.C. §§ 922(g)(1) and 924(e), convicted after the district court admitted the DNA and the post-arrest synthetic-marijuana evidence, and appealed alleging Fourth Amendment, Rule 404(b), and Rehaif errors.
Issues:
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Probable cause for arrest | Informant description was vague/inaccurate; mere presence at the house insufficient | Tip corroborated by DMV photo match, surveillance of drug-like foot traffic, discovery of drugs and guns at the house and nearby car | Probable cause existed; arrest lawful |
| Validity of DNA cheek swab (Fourth Amendment/consent) | Swab was taken without consent and without warrant; evidence thus inadmissible | Welch voluntarily consented after Miranda; interrogation was calm and brief | District court did not clearly err: consent was voluntary; DNA admissible |
| Admissibility of synthetic marijuana under Rule 404(b) | Evidence of separate drug possession was impermissible propensity evidence | Evidence probative of motive/knowledge/intent because it matched the drug found in the house | No abuse of discretion; admitted as evidence of motive/knowledge |
| Rehaif scienter requirement for §922(g)(1) | Government did not prove Welch knew he was a person barred from firearm possession at the time | Welch had multiple prior felony convictions and served multi‑year sentences, so outcome would be the same | No plain error: unlikely the result would differ even if scienter were proved at trial |
Key Cases Cited
- Weeks v. United States, 232 U.S. 383 (exclusionary rule for illegally obtained evidence)
- Elkins v. United States, 364 U.S. 206 (exclusionary rule applies to state officers used in federal prosecutions)
- Beck v. Ohio, 379 U.S. 89 (probable cause standard for warrantless arrests)
- Illinois v. Gates, 462 U.S. 213 (totality-of-the-circumstances test for informant tips)
- Miranda v. Arizona, 384 U.S. 436 (Miranda warnings requirement)
- Ybarra v. Illinois, 444 U.S. 85 (mere presence/proximity insufficient for probable cause)
- United States v. Sanders, 424 F.3d 768 (consent standard for searches)
- United States v. Cedano-Medina, 366 F.3d 682 (consent must be free and voluntary)
- United States v. Williams, 796 F.3d 951 (drug possession relevant to motive in gun cases)
- United States v. Claybourne, 415 F.3d 790 (prior drug‑related facts probative of motive/intent for gun possession)
- Rehaif v. United States, 139 S. Ct. 2191 (government must prove defendant knew he belonged to a prohibited class under §922(g))
- United States v. Olano, 507 U.S. 725 (plain‑error standard)
- Molina-Martinez v. United States, 136 S. Ct. 1338 (standard for showing prejudice in plain-error review)