NOT RECOMMENDED FOR PUBLICATION File Name: 24a0480n.06
Case No. 24-3165
UNITED STATES COURT OF APPEALS FOR THE SIXTH CIRCUIT
FILED Dec 03, 2024 ) UNITED STATES OF AMERICA, KELLY L. STEPHENS, Clerk ) Plaintiff-Appellee, ) ) ON APPEAL FROM THE UNITED v. ) STATES DISTRICT COURT FOR ) THE SOUTHERN DISTRICT OF RONALD LEE JACOBS, ) OHIO Defendant-Appellant. ) ) OPINION
Before: McKEAGUE, THAPAR, and LARSEN, Circuit Judges.
THAPAR, Circuit Judge. Ronald Jacobs committed thirteen robberies in under two
months. He was charged with six and convicted of each. Now he objects to several of the district
court’s decisions at trial. He also contends there was insufficient evidence to convict him of
brandishing a firearm while committing one of the robberies. Those claims don’t have merit. But
his sentencing claim—that the district court didn’t adequately explain how it arrived at his
Guidelines range—does.
I.
Ronald Jacobs committed a slew of armed robberies in Columbus. While robbing a
Walgreens, Jacobs grabbed a package of gum but left it behind. The police found Jacob’s
fingerprints on the gum and obtained a warrant for his arrest. Jacobs surrendered and confessed. No. 24-3165, United States v. Jacobs
We confirmed that his confession was voluntary, and his case proceeded to trial. See United States
v. Jacobs, 63 F.4th 1055, 1060 (6th Cir. 2023).
The jury convicted Jacobs of six counts of Hobbs Act robbery. And the jury found Jacobs
guilty of one count of brandishing a firearm during and in relation to a crime of violence. Now
Jacobs appeals (1) the district court’s decision to admit fingerprint evidence at trial without a
Daubert hearing, (2) the district court’s answer to a jury question about the fingerprints, (3) the
sufficiency of the evidence underlying his conviction for brandishing a firearm, and (4) the district
court’s calculation of his total offense level and Guidelines range.
II.
This case began with Jacobs picking up a package of gum and leaving his fingerprints
behind for the police to find. See id. at 1057. Fittingly, two of Jacobs’s claims on appeal relate to
these fingerprints. First, he objects to the admission of testimony by a forensic fingerprint
examiner. Jacobs argued below that fingerprint evidence was unreliable and should be excluded.
The district court declined to hold a Daubert hearing and rejected his motion. See Daubert v.
Merrell Dow Pharms. Inc., 509 U.S. 579 (1993). Now Jacobs contends that the court abused its
discretion by declining to hold a hearing. It did not.
A.
At trial, the government sought to introduce testimony by Amanda Wilberg, a forensic
fingerprint examiner. Wilberg had used the ACE-V method1 to match the “latent” prints the robber
left behind with two sets of “known” prints that belonged to Jacobs. Latent fingerprints are
fingerprints left behind on an object. Known fingerprints, by contrast, are made by an individual
1 “ACE-V” stands for analysis, comparison, evaluation, and verification.
-2- No. 24-3165, United States v. Jacobs
who rolls their fingerprint in ink. Jacobs filed a motion in limine, contending that this evidence,
and the ACE-V fingerprint identification method in general, was unreliable.
Jacobs alleged that there hasn’t been testing on the probability of different people having
the same fingerprint characteristics. Without this testing, latent fingerprint evidence lacked a
known error rate. And a known error rate helps show reliability under Daubert. See Daubert, 509
U.S. at 594. In support, Jacobs cited two articles calling for studies on the accuracy of fingerprint
evidence.2
In response, the district court pointed out that (1) Jacobs’s articles were twenty years old
and (2) Jacobs couldn’t identify a single case in which a court had adopted the reasoning from
these articles to exclude fingerprint evidence. Instead, the district court concluded that this was an
“ordinary case[] where the reliability of an expert’s methods is properly taken for granted.” R. 105,
Pg. ID 938 (alteration in original) (quoting Kumho Tire Co. v. Carmichael, 526 U.S. 137, 152
(1999)). In doing so, the district court relied on cases where courts rejected similar attacks on
latent fingerprint evidence without a hearing. See id. at Pg. ID 937–38 (discussing United States
v. Stone, 848 F. Supp. 2d 714, 717 (E.D. Mich. 2012) and United States v. Cromer, No. 1:01-CR-
130-01, 2006 WL 1430210, at *1 (W.D. Mich. May 23, 2006)).
Jacobs argues that fingerprint evidence’s admissibility is now up-for-grabs. See R. 73, Pg.
ID 800 (calling the reliability of fingerprint evidence an “unproven assumption that . . . can no
longer be sustained post-Daubert”). But courts have repeatedly upheld the use of latent fingerprint
evidence under the ACE-V method in the thirty years since Daubert. See United States v. Pena,
2 Jacobs cited a National Institute of Justice article from 2000 that solicited further research on fingerprints. Courts have rejected reliability attacks based on this exact article. See United States v. Crisp, 324 F.3d 261, 267, 270 (4th Cir. 2003).
-3- No. 24-3165, United States v. Jacobs
586 F.3d 105, 110–11 (1st Cir. 2009) (collecting cases); United States v. Mitchell, 365 F.3d 215,
233–46 (3d Cir. 2004) (conducting an exhaustive Daubert analysis of the ACE-V method).3
Jacobs further contends the district court abdicated its “gatekeeping” responsibilities by
not holding a hearing. But courts don’t have to hold a Daubert hearing every time a party raises a
reliability question. Clay v. Ford Motor Co., 215 F.3d 663, 667 (6th Cir. 2000); see Mitchell, 365
F.3d at 246 (concluding that a district court wouldn’t abuse its discretion by “dispensing with the
hearing altogether if no novel challenge [to latent fingerprint evidence] was raised”).
The district court provided Jacobs with a reasoned decision that responded to his reliability
concerns. As the district court concluded, “[i]t would be a drastic measure” to find that this
fingerprint evidence failed Daubert’s reliability threshold. R. 105, Pg. ID 938. And Jacobs has
not provided us with any reason to question the district court’s judgment here, let alone conclude
that “it committed a clear error of judgment” when it declined to hold a hearing on such a well-
established form of evidence. Conwood Co. v. U.S. Tobacco Co., 290 F.3d 768, 781 (6th Cir.
2002). Thus, Jacobs’s claim fails.
B.
Now, for the second fingerprint claim. The government called Wilberg, the forensic
fingerprint examiner, as an expert witness at trial. The government also presented two slides with
side-by-side comparisons of the latent and known fingerprints to the jury. The first slide showed
the latent prints on the left and one set of Jacobs’s known prints (labeled “185417GD”) on the
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NOT RECOMMENDED FOR PUBLICATION File Name: 24a0480n.06
Case No. 24-3165
UNITED STATES COURT OF APPEALS FOR THE SIXTH CIRCUIT
FILED Dec 03, 2024 ) UNITED STATES OF AMERICA, KELLY L. STEPHENS, Clerk ) Plaintiff-Appellee, ) ) ON APPEAL FROM THE UNITED v. ) STATES DISTRICT COURT FOR ) THE SOUTHERN DISTRICT OF RONALD LEE JACOBS, ) OHIO Defendant-Appellant. ) ) OPINION
Before: McKEAGUE, THAPAR, and LARSEN, Circuit Judges.
THAPAR, Circuit Judge. Ronald Jacobs committed thirteen robberies in under two
months. He was charged with six and convicted of each. Now he objects to several of the district
court’s decisions at trial. He also contends there was insufficient evidence to convict him of
brandishing a firearm while committing one of the robberies. Those claims don’t have merit. But
his sentencing claim—that the district court didn’t adequately explain how it arrived at his
Guidelines range—does.
I.
Ronald Jacobs committed a slew of armed robberies in Columbus. While robbing a
Walgreens, Jacobs grabbed a package of gum but left it behind. The police found Jacob’s
fingerprints on the gum and obtained a warrant for his arrest. Jacobs surrendered and confessed. No. 24-3165, United States v. Jacobs
We confirmed that his confession was voluntary, and his case proceeded to trial. See United States
v. Jacobs, 63 F.4th 1055, 1060 (6th Cir. 2023).
The jury convicted Jacobs of six counts of Hobbs Act robbery. And the jury found Jacobs
guilty of one count of brandishing a firearm during and in relation to a crime of violence. Now
Jacobs appeals (1) the district court’s decision to admit fingerprint evidence at trial without a
Daubert hearing, (2) the district court’s answer to a jury question about the fingerprints, (3) the
sufficiency of the evidence underlying his conviction for brandishing a firearm, and (4) the district
court’s calculation of his total offense level and Guidelines range.
II.
This case began with Jacobs picking up a package of gum and leaving his fingerprints
behind for the police to find. See id. at 1057. Fittingly, two of Jacobs’s claims on appeal relate to
these fingerprints. First, he objects to the admission of testimony by a forensic fingerprint
examiner. Jacobs argued below that fingerprint evidence was unreliable and should be excluded.
The district court declined to hold a Daubert hearing and rejected his motion. See Daubert v.
Merrell Dow Pharms. Inc., 509 U.S. 579 (1993). Now Jacobs contends that the court abused its
discretion by declining to hold a hearing. It did not.
A.
At trial, the government sought to introduce testimony by Amanda Wilberg, a forensic
fingerprint examiner. Wilberg had used the ACE-V method1 to match the “latent” prints the robber
left behind with two sets of “known” prints that belonged to Jacobs. Latent fingerprints are
fingerprints left behind on an object. Known fingerprints, by contrast, are made by an individual
1 “ACE-V” stands for analysis, comparison, evaluation, and verification.
-2- No. 24-3165, United States v. Jacobs
who rolls their fingerprint in ink. Jacobs filed a motion in limine, contending that this evidence,
and the ACE-V fingerprint identification method in general, was unreliable.
Jacobs alleged that there hasn’t been testing on the probability of different people having
the same fingerprint characteristics. Without this testing, latent fingerprint evidence lacked a
known error rate. And a known error rate helps show reliability under Daubert. See Daubert, 509
U.S. at 594. In support, Jacobs cited two articles calling for studies on the accuracy of fingerprint
evidence.2
In response, the district court pointed out that (1) Jacobs’s articles were twenty years old
and (2) Jacobs couldn’t identify a single case in which a court had adopted the reasoning from
these articles to exclude fingerprint evidence. Instead, the district court concluded that this was an
“ordinary case[] where the reliability of an expert’s methods is properly taken for granted.” R. 105,
Pg. ID 938 (alteration in original) (quoting Kumho Tire Co. v. Carmichael, 526 U.S. 137, 152
(1999)). In doing so, the district court relied on cases where courts rejected similar attacks on
latent fingerprint evidence without a hearing. See id. at Pg. ID 937–38 (discussing United States
v. Stone, 848 F. Supp. 2d 714, 717 (E.D. Mich. 2012) and United States v. Cromer, No. 1:01-CR-
130-01, 2006 WL 1430210, at *1 (W.D. Mich. May 23, 2006)).
Jacobs argues that fingerprint evidence’s admissibility is now up-for-grabs. See R. 73, Pg.
ID 800 (calling the reliability of fingerprint evidence an “unproven assumption that . . . can no
longer be sustained post-Daubert”). But courts have repeatedly upheld the use of latent fingerprint
evidence under the ACE-V method in the thirty years since Daubert. See United States v. Pena,
2 Jacobs cited a National Institute of Justice article from 2000 that solicited further research on fingerprints. Courts have rejected reliability attacks based on this exact article. See United States v. Crisp, 324 F.3d 261, 267, 270 (4th Cir. 2003).
-3- No. 24-3165, United States v. Jacobs
586 F.3d 105, 110–11 (1st Cir. 2009) (collecting cases); United States v. Mitchell, 365 F.3d 215,
233–46 (3d Cir. 2004) (conducting an exhaustive Daubert analysis of the ACE-V method).3
Jacobs further contends the district court abdicated its “gatekeeping” responsibilities by
not holding a hearing. But courts don’t have to hold a Daubert hearing every time a party raises a
reliability question. Clay v. Ford Motor Co., 215 F.3d 663, 667 (6th Cir. 2000); see Mitchell, 365
F.3d at 246 (concluding that a district court wouldn’t abuse its discretion by “dispensing with the
hearing altogether if no novel challenge [to latent fingerprint evidence] was raised”).
The district court provided Jacobs with a reasoned decision that responded to his reliability
concerns. As the district court concluded, “[i]t would be a drastic measure” to find that this
fingerprint evidence failed Daubert’s reliability threshold. R. 105, Pg. ID 938. And Jacobs has
not provided us with any reason to question the district court’s judgment here, let alone conclude
that “it committed a clear error of judgment” when it declined to hold a hearing on such a well-
established form of evidence. Conwood Co. v. U.S. Tobacco Co., 290 F.3d 768, 781 (6th Cir.
2002). Thus, Jacobs’s claim fails.
B.
Now, for the second fingerprint claim. The government called Wilberg, the forensic
fingerprint examiner, as an expert witness at trial. The government also presented two slides with
side-by-side comparisons of the latent and known fingerprints to the jury. The first slide showed
the latent prints on the left and one set of Jacobs’s known prints (labeled “185417GD”) on the
3 In fact, the National Institute of Justice—the author of the article from 2000 that Jacobs relied on—confirmed in 2022 that Wilberg’s methodology was sound. See National Institute of Justice, The History and Legacy of the Latent Fingerprint Black Box Study, https://nij.ojp.gov/topics/articles/history-and-legacy-latent-fingerprint-black-box-study (discussing a 2011 FBI study that determined latent fingerprint evidence had a false positive rate of only 0.1%).
-4- No. 24-3165, United States v. Jacobs
right. The second slide also compared the latent prints on the left with Jacobs’s other set of known
prints (labeled “165329DC”) on the right.
(1)
When the jury was deliberating, they had a question about these exhibits. They asked,
“Are the fingerprints . . . in Exhibits [P]10B, the same person? Specifically, we are asking if the
right fingerprint in 165329DC [(S6)] is the same individual as in 185417GD [(S6)]?” R. 174, Pg.
ID 2568. After some back-and-forth between the lawyers and the district court, they determined
that the jury was referencing the two sets of known prints. The fingerprint marked “185417GD”
was one of Jacobs’s known prints. And the fingerprint marked “165329DC” was Jacobs’s other
known print.
The jury did not ask if Jacobs’s known prints matched the robber’s latent prints. That was
a question the jurors had to consider for themselves. Rather, the jurors were confirming that both
known prints came from the same person. After all, if they weren’t from the same person, that
would mean there were two potential matches for the robber’s prints. And it’d be much harder to
conclude that Jacobs committed the crime.
Since the known fingerprints belonged to the same person (Jacobs), the government
thought the judge’s answer should simply be “yes.” The only thing challenged at trial was the
“results of a comparison” between the latent and known prints—not the authenticity or validity of
the known prints themselves. Plus, the jury didn’t ask whom the known prints belonged to; they
just wanted to check that the two known prints belonged to the same person. So answering “yes”
would clear up any potential confusion about there being “two matches” for the robber.
But Jacobs requested a different answer from the court. Since this was a question of fact,
and since there was no formal stipulation that the known prints belonged to the same individual,
-5- No. 24-3165, United States v. Jacobs
Jacobs maintained that the court should simply “refer the jury back to their collective memory.”
Id. at Pg. ID 2575. The court struck a compromise and did both. Since “nobody contested that
these were the prints of the same person,” the court told the jury that the direct answer to its
question was “yes.” Id. at Pg. ID 2575, 2589. But the court also reminded the jury to “rely on
your collective memories.” Id. at Pg. ID 2589.
(2)
Jacobs objected to the court’s response below and appeals on the same basis. Jacobs argues
that the court’s “yes” inappropriately usurped the jury’s role as factfinder. He claims that this was
a “contentious fact-based question” and that the court should have referred the jurors to their
collective memory rather than deciding an evidentiary dispute. Appellant Br. at 19. We review a
district court’s response to jury questions for abuse of discretion. United States v. Davis, 970 F.3d
650, 662 (6th Cir. 2020). And we reverse only if the response prejudiced the defendant. Id.
Here, we need not even decide whether the district court abused its discretion because the
answer wasn’t prejudicial. Neither party contested that the known fingerprints both belonged to
Jacobs, since that fact was indisputable. The known prints came from Jacobs’s prior conviction
for robbery and his arrest for the string of robberies that gave rise to this case. Indeed, the exhibits
could’ve labeled the known fingerprints with Jacobs’s name instead of a string of numbers, and
Jacobs couldn’t have objected. This court has declined to find prejudice in similar circumstances,
when there was “literally zero [contradictory] evidence in the record.” Id. at 662–63 (citation
omitted). We do the same here.
III.
Next, Jacobs brings a sufficiency-of-the-evidence challenge to his § 924(c) conviction for
brandishing a firearm while robbing a Wing Snob. Section 924(c) criminalizes “brandish[ing]” a
-6- No. 24-3165, United States v. Jacobs
firearm “during and in relation to any crime of violence.” 18 U.S.C. § 924(c)(1)(A)(ii). Hobbs
Act robbery qualifies as a crime of violence. See United States v. Camp, 903 F.3d 594, 597 (6th
Cir. 2018).
We must affirm if any rational trier of fact could have found the essential elements of the
crime beyond a reasonable doubt. United States v. Davis, 473 F.3d 680, 681 (6th Cir. 2007).
Moreover, we view the evidence in the light most favorable to the prosecution. Id. And Jacobs
didn’t renew his Rule 29 motion for acquittal after presenting his evidence. So Jacobs must also
show that his denied Rule 29 motion resulted in a “manifest miscarriage of justice.” United States
v. Dunnican, 961 F.3d 859, 877 (6th Cir. 2020) (citation omitted). Jacobs thus faces an uphill
battle.
Jacobs contends that there wasn’t enough proof that he had a firearm when he robbed the
Wing Snob. The camera and video footage were blurry; any weapon he allegedly had was
concealed; and the sole eyewitness’ testimony wasn’t corroborated. So, he says, all this evidence
amounted to “speculation.” Appellant Br. at 31. We disagree.
Kristie Eaton, a shift manager at Wing Snob, testified that she “looked up and there was a
gun and he said to get on the ground, open the safe and be quiet.” R. 170, Pg. ID 1696. When
asked to describe the gun, Eaton responded that “[i]t was a single barrel on the smaller end. It
wasn’t very large. But it looked like a rifle.” Id. at Pg. ID 1697. Though she couldn’t see the
whole gun because “[i]t was covered with a jacket,” Eaton identified the gun when shown
surveillance photos. Id.; Id. at Pg. ID 1700–01. As Eaton explained, the gun clanged on Jacobs’s
jacket zipper, and “metal against metal makes a different noise than plastic on metal.” Id. at Pg.
ID 1712. When pressed on cross-examination, Eaton retorted that it “was plain as day” that Jacobs
had a firearm. R. 170, Pg. ID 1713.
-7- No. 24-3165, United States v. Jacobs
Police officer testimony corroborated Eaton’s account. The officer who investigated the
robbery reported his conversation with the cashier shortly after the incident. The cashier relayed
that the perpetrator was “concealing a black rifle.” Id. at Pg. ID 1688. And if that weren’t enough,
Jacobs’s own statements serve as evidence for his § 924(c) conviction. Detective Agee
interviewed Jacobs after Jacobs turned himself in. At trial, the government played video
recordings of Jacobs’s incriminating response to Detective Agee that “[t]he weapons, they gone.”
R. 172, Pg. ID 2154. Jacobs also told Detective Agee he had placed clothing over his shotgun
because the gun was “too big.” Id. at Pg. ID 2165.
One eyewitness, corroborating officer testimony, and several incriminating statements by
Jacobs. That’s more than enough to support a guilty verdict on the § 924(c) count.
IV.
Finally, Jacobs objects to the district court’s calculation of his total offense level and
Guidelines range. Jacobs contends that his total offense level should’ve been 27, not 28. And
Jacobs argues his Guidelines range thus should’ve been 78–97 months, not 87–108 months. A
sentence is procedurally unreasonable if the district court miscalculates the Guidelines range or
fails to adequately explain the chosen sentence. See United States v. Mack, 808 F.3d 1074, 1084
(6th Cir. 2015) (citing Gall v. United States, 552 U.S. 38, 51 (2007)). Since Jacobs failed to make
this argument below, our review is for plain error. See United States v. O’Lear, 90 F. 4th 519, 535
(6th Cir. 2024).
It’s unclear from the record how the district court arrived at an offense level of 28. This
much we do know: The base offense level for Hobbs Act robbery is 20. U.S.S.G. § 2B3.1(a).
The probation officer recommended several enhancements: brandishing a firearm (+5), physically
restraining a person in commission of the offense (+2), obstruction of justice (+2), and a multiple-
-8- No. 24-3165, United States v. Jacobs
count adjustment (+5). The district court sustained Jacobs’s objections to the firearm and
obstruction enhancements. But the district court found that the physical-restraint enhancement
applied to count two. So Jacobs’s highest adjusted offense level was 22. Next, to calculate
Jacobs’s combined adjusted offense level, the district court would’ve taken the highest adjusted
offense level (22) and added it to the multiple count adjustment (5). That sum should’ve made 27,
as Jacobs argues.
But there’s a twist. The government argued at sentencing for a three-level enhancement
for brandishing a dangerous weapon if the court declined to apply the five-level firearm
enhancement. That enhancement would’ve made Jacobs’s highest adjusted offense level 23, not
22. If the court indeed applied the three-level dangerous-weapon enhancement, the math checks
out: a base level of 20, plus three for the dangerous-weapon enhancement, plus five for the
multiple-count adjustment makes 28.
The problem is there’s no mention of the dangerous-weapon enhancement in the
presentence report. And at sentencing, the district court never said that it would apply the
dangerous-weapon enhancement. Instead, the district court consulted off-the-record with the
probation officer and then announced an offense level of 28. To be sure, the district court had
earlier mused that it could find that “[Jacobs] had something wrapped up and maybe that was a
dangerous weapon.” R. 199, Pg. ID 2795. And the district court requested a separate
memorandum from the probation officer with calculations for the dangerous-weapon
enhancement.
But critically, the district court never stated what enhancements it applied. In fact, at the
time, the government seemed to think the district court hadn’t applied the dangerous-weapon
enhancement since it expressly preserved an objection to the court’s “declining to impose the
-9- No. 24-3165, United States v. Jacobs
dangerous weapon enhancement.” R. 200, Pg. ID 2850. If the district court really did apply the
dangerous-weapon enhancement, that would’ve been a great opportunity to clarify.
“[I]t is not this court’s duty to supply reasons for the district court’s sentencing decision.”
United States v. Fowler, 819 F.3d 298, 306 (6th Cir. 2016). The district court didn’t just fail to
give an adequate explanation of the reasons for the sentence it imposed; it failed to identify what
enhancements it applied. That amounts to plain error. Thus, we vacate Jacobs’s sentence and
remand for the district court to clarify what sentencing enhancement it used.
* * *
There was sufficient evidence to support Jacobs’s § 924(c) conviction. And the district
court didn’t abuse its discretion when it (1) admitted fingerprint evidence without a Daubert
hearing and (2) answered the jury’s question about the fingerprint evidence. But we remand for
the district court to clarify which sentencing enhancements it applied.
- 10 -