58 F.4th 541
1st Cir.2023Background
- Jackson paid Keenan to buy two separate handguns (Dec. 23 and Dec. 27, 2016); Keenan completed ATF Form 4473s and handed the guns to Jackson in a store parking lot.
- In Jan. 2017, store staff summoned law enforcement; ATF agents Matthew Barter and John Cook questioned Jackson, who acknowledged a felony conviction, declined to "work together," and invoked his right to counsel; agents seized $1,000 from Keenan as evidence.
- The government sought an indictment in 2018; Cook's grand-jury testimony referenced an incorrect 2013 Dorchester conviction (not Jackson’s), leading to a superseding grand-jury presentation in Feb. 2020 that relied on other convictions (including convictions identified via fingerprint analysis).
- At trial (Sept. 2021) the government introduced: Cook’s testimony, store witnesses and surveillance evidence linking the events to Jackson, certified RMV documents, and ATF special agent John Forte’s interstate-nexus expert testimony about the guns’ manufacture locations.
- Jackson moved for acquittal (Rule 29) arguing insufficient proof of identity and that Forte’s Rule 702/703 testimony was unreliable; he also moved to dismiss the superseding indictment for grand-jury misconduct (false testimony about a prior conviction and characterization of Jackson’s invocation of rights).
- The district court denied the motions; the jury convicted on two counts of possession by a prohibited person (18 U.S.C. § 922(g)(1)), Jackson was sentenced to 66 months, and he appealed.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Identification / sufficiency of evidence that Jackson was perpetrator | No in-court ID or unambiguous ID; masked at trial; circumstantial identity evidence insufficient | Trial testimony (Cook), counsel references, surveillance linkage, RMV photos and absence of defense objection provided sufficient ID | Conviction upheld; jurors could reasonably infer identity; Rule 29 denial affirmed |
| Admissibility of ATF nexus expert under Rule 702 (reliability/application) | Forte’s testimony was vague about sources and contacts; methods not reliably shown; should be excluded | Forte is a qualified interstate-nexus examiner, used accepted methods and applied them to serial-numbered guns; Daubert gatekeeping satisfied | District court did not abuse discretion admitting testimony; any weaknesses go to weight not admissibility |
| Reliance on materials under Rule 703 (variance database and other references) | Forte failed to show that experts reasonably rely on the variance database or identify referenced materials | Forte testified he always checks the variance database and that experts reasonably rely on his suite of sources | Court found no clear error; Forte’s testimony fell within Rule 703 — admissible and for jury to weigh |
| Grand-jury misconduct (false prior-conviction statement and reference to invocation) | Government knowingly let false statement about a 2013 conviction stand and characterized invocation as cessation of cooperation, biasing the grand jury | Testimony also showed multiple other felony convictions (uncontested); misstatements were sloppy but not prejudicial; reference to invocation was not an intentional attempt to invite adverse inference | District court’s refusal to dismiss affirmed: Jackson failed to show the errors substantially influenced the grand jury or caused prejudice; cumulative claim also rejected |
Key Cases Cited
- Daubert v. Merrell Dow Pharm., 509 U.S. 579 (1993) (trial court gatekeeping on expert reliability)
- Gen. Elec. Co. v. Joiner, 522 U.S. 136 (1997) (courts may exclude opinions with an analytical gap)
- Milward v. Acuity Specialty Prods. Grp., Inc., 639 F.3d 11 (1st Cir. 2011) (weak factual underpinnings affect weight, not admissibility)
- United States v. Cormier, 468 F.3d 63 (1st Cir. 2006) (accepting interstate-nexus examiner methodology)
- United States v. Corey, 207 F.3d 84 (1st Cir. 2000) (precedent admitting nexus-expert testimony)
- Martínez v. United States, 33 F.4th 20 (1st Cir. 2022) (standard of review for admissibility rulings)
- United States v. Reyes-Echevarria, 345 F.3d 1 (1st Cir. 2003) (grand-jury misconduct may warrant dismissal when government knowingly elicits false testimony and prejudice results)
- United States v. Giorgi, 840 F.2d 1022 (1st Cir. 1988) (dismissing indictment when government distorts grand-jury integrity)
- Bank of Nova Scotia v. United States, 487 U.S. 250 (1988) (showing prejudice: errors must substantially influence grand jury or leave grave doubt)
- United States v. Flaherty, 668 F.2d 566 (1st Cir. 1981) (grand jury may consider incompetent evidence but court supervises integrity of proceedings)