Dеfendant Manuel Avitia-Guillen, a citizen of Mexico, lawfully entered the United States in 1955. He obtained permanent resident status in 1988 but was deported in June 1996 after being convicted of an aggravated felony. Immigration and Customs Enforcement (“ICE”) discovered Defendant in Denver, Colorado, in May 2011. A grand jury indicted Defendant with one count of being found in the United States after deportation, in violation of 8 U.S.C. § 1326(a) and (b)(2). At trial, the Government called a fingerprint examiner with the Colorado Bureau of Investigation (CBI), Wendy Bacchi, to testify that Defendant’s fingerprints matched those on his 1996 deportation records. The Government laid the following foundation for Bacchi’s testimony: Bacchi became a Fingerprint Examiner Intern with the CBI in 1999 after completing a semester-long fingerprint identifiсation class at Pikes Peak Community College. In 2000, Bacchi was promoted to a full Fingerprint Examiner. About fifty percent of her time was devoted to fingerprint comparison, and she had examined “thousands” of fingerprints. She had previously qualified as a fingerprint comparison expert in state and federal courts.
Defense counsel then examined Bacchi, establishing that Bacchi had never been promoted to a “level 2 examiner,” had not published any peer-reviewed articles on fingerprint examination, had not conducted any training to certify people as fingerprint examiners, was not qualified to examine latent fingerprints, and had not received any additional training since 2000. Defense counsel then objected to Bacchi’s qualifications. The district court replied. “The objection is duly noted but respectfully overruled. This is an area that involves scientific, technical or other specialized knowledge. The foundation has been laid that the witness by her training, education, background and experience is qualified to testify and opine as a fingerprint examiner.” Trial Trans, vol. II at 343.
Bacchi рroceeded to testify that Defendant’s fingerprints taken upon his 2011 arrest matched the fingerprints taken during his removal proceedings in 1996. Defendant moved for a judgment of acquittal, but the district court denied the motion, and the jury returned a guilty verdict. The district court sentenced Defendant to the low end of the guideline range, 41 months’ imprisonment. On appeal, Defendant argues the district сourt failed to make adequate findings of reliability with respect to Bacchi’s testimony. Exercising jurisdiction under 28 U.S.C. § 1291, we affirm.
I.
The issue Defendant raises on appeal is extremely narrow. He does not renew his objection to Bacehi’s qualifications as an expert witness, nor does he challenge the scientific reliability of fingerprint identification. Instead, he argues the district court erred “by failing to create an adequate record demonstrating that it satisfied its gatekeeping obligations.” 1 Aplt.’s *1256 Br. at 18.
Federal Rule of Evidence 702 requires a district court to assess proffered expert testimony to ensure it is both relevant and reliable.
Daubert v. Merrell Dow Pharms., Inc.,
We review de novo whether the district court applied the proper standard in admitting expert testimony.
United States v. Garcia,
The sole question before us is whether the district court has “adequately demonstrate[d] by specific findings on the record that it has performed its duty аs gatekeeper.”
Goebel,
On appeal, Defendant argues the district court had a duty to make factual findings regаrding both Bacchi’s qualifications and her methodology. But Defendant did not object to Bacchi’s methodology at trial. “When no objection is raised, district courts are not required to make ‘explicit on-the-record rulings,”’ because “we assume that the district court consistently and continually performed a trustworthiness analysis sub silentio of all evidence introduced at trial.”
Id.
at 1088 n. 2. (quoting
Hoult v. Hoult, 57
F.3d 1, 5 (1st Cir.1995)). Where a party objects only to an expert’s qualifications, he does not preserve an objection to the expert’s methodology.
See United States v. Vargas,
A.
We turn first to whether the district court fulfilled its gatekeeping function regarding Bacchi’s qualifications. In
United States v. Velarde,
We again examined the adequacy of a district court’s gatekeeper findings in
Goebel.
There, a doctor testified the plaintiffs brain injury resulted from exposure to train locomotive fumes combined with the effects of high elevation.
Id.
at 1086. The district court did not conduct a
Daubert
hearing and made no findings regarding the reliability of the expert’s testimony, despite three separate objections by the defendant.
Id.
at 1086-87. The extent of the district court’s on-the-record findings was its statement that “I believe there is sufficient foundation here for the jury to hear this testimony.”
Id.
at 1087. We said the gatekeeping function requires “a sufficiently developed record in order to allow a determination of whether the district court properly apрlied the relevant law.”
Id.
at 1088 (quoting
United States v. Nichols,
In
Roach,
a police officer gave expert testimony regarding common practices of Crips gang members such as carrying firearms, using certain slang terms, and using blue porch lights.
Roach,
What, then, is required to “adequately demonstrate by specific findings оn the record that [the district court] has performed its duty as gatekeeper”?
Goebel,
This case differs from
Goebel,
where the district court did not show on the record it had exercised its gatekeeping function. Here, the district court specifically recited the standard it was applying — Rule 702. Additionally,
Goebel
involved a challenge to an expert’s methodology in a complicated area of medical science. This case involves an expert’s qualifications to testify to a commonly used method of identificatiоn. Defendant argues the district court was required to “carefully and meticulously review the proffered scientific evidence.”
Goebel,
This case is more similar to
Roach,
which involved a challenge to an expert’s “credentials,” rather than his methodology.
Roach,
Defendant would have us expand
Roach,
which requires at least
some
factual findings, and require a district court to “justify, support, or expound on its conclusion.” Aplt.’s Br. at 19. He argues the district court needed to say “considerably more” about the foundation for Bacchi’s testimony.
Id.
at 20. But our cases do not require district courts to extensively explain their reliability determinations, especially with regard to an expert’s qualifications. Defendant would have us order a new trial simply so the district court could elaborate for a few more sentences on its determination that Bacchi qualified as an expert witness. Such an elaboration would in no way further our appellate review. The record is already sufficient for us to determine the basis for the court’s ruling, and consequently prоvides a “sufficient basis for appellate review.”
Goebel,
B.
The only remaining question is whether the district court neglected its gatekeeping function with respect to Bacchi’s methodology, an argument Defendant urges on appeal. As mentionеd above, our review on this issue is only for plain error.
Macsenti,
AFFIRMED.
Notes
. The record creates some confusion as to how long Bacchi had worked as a fingerprint analyst. At trial, which took place in July 2011, Bacchi stated she had been employed by the CBI for "[sjixteen years.” Trial Trans, vol. II at 333. When asked what positions she had held, she responded: "I was a Crime Data Specialist when I started my career *1256 there in '85. In '99 I was promoted to a Fingerprint Examiner Intern, and in 2000 I was promoted to a full Fingerprint Examiner.” Id. Later, when asked how long she had been doing fingerprint work, she said, "Since 1989.” Id. at 335. Yet a short time later she said she took the fingerprint class in "January through May of 1998.” Defendant seizes on the 1989 date, arguing that Bacchi had received no additional training in "20-plus years” of fingerprint work. The Government describes Bacchi as "a fingerprint comparison examiner since 2000." In light of Bacchi's other testimony, the references to 1985 and 1989 were likely transcription errors and the correct years were actually 1995 and 1999. Ultimately, however, we need not resolve the confusion. Although it may be relevant to whether Bacchi was qualified as an expert, Defendant has not challenged her qualifications.
. Our de novo review extends only so far, of course. It applies only to whether the district сourt "actually performed its gatekeeper role in the first instance.”
Dodge,
. At first glance, our holding in
Velarde
that the district court abused its discretion seems to conflict with our de novo standard of review. In our earlier cases, we held that ad
*1258
mitting expert testimony without any findings regarding its reliability was an abuse of discretion.
See Goebel,
