Appellant David Vernon Tank appeals his conviction and sentence for conspiring to sexually exploit a child for the purpose of producing a sexually explicit visual depiction in violation of 18 U.S.C. §§ 2251(a) and (d); conspiring to engage in the receipt and distribution of sexually explicit images of children in violation of 18 U.S.C. §§ 2252(a) and (b)(1); and distributing sexually explicit images of a child to another person in violation of 18 U.S.C. § 2252(a).
Specifically, Tank appeals the district court’s decisions regarding: (1) the sufficiency of the foundation for admission into evidence of chat room 2 log printouts; 3 (2) the legality of the seizure under the Fourth Amendment of a Zip disk found in his car; (3) the sufficiency of the evidence to support his convictions; and (4) the application of the Sentencing Guidelines. We affirm Tank’s convictions and remand for x*esentencing.
I.
BACKGROUND
Tank belonged to a sixteen-member Internet chat room called the Orchid Club. 4 Members of the Orchid Club discussed, traded, and produced child pornography. While online in the chat room, Orchid Club members traded digital pornographic images of children.
Ronald Riva, another member of the Orchid Club, was arrested on a child molestation charge. A search of Riva’s home and computer files revealed thousands of pornographic pictures of children. The search also revealed computer text files containing “recorded” online chat room discussions that took place among members of the Orchid Club. Riva’s computer was programmed to save all of the conversations among Orchid Club members as text files whenever he was online. Before any Orchid Club member was investigated or arrested, Riva had deleted from his computer nonsexual conversations and extraneous material, such as date and time stamps, to decrease the size of the text files and free space on his hard drive. These text files constitute the chat room logs at issue. The evidence seized from Riva implicated other Orchid Club members, including Tank.
Based on this evidence, U.S. Customs agents obtained and executed an arrest warrant for Tank and a search warrant for his home. The search warrant did not include Tank’s car. Tank was apprehended in his car less than a block from his house and placed under arrest for computer-related child pornography offenses. Within minutes of the axrest, the officer drove Tank’s car back to Tank’s house, searched the car, and found a Zip disk *630 inside a backpack. The Zip disk was later shown to contain pornographic images of children that Tank had distributed to other Orchid Club members online.
At an evidentiary hearing, Tank argued that the district court should not admit the chat room logs into evidence because the government had laid an insufficient foundation. Tank objected that there was no foundation for admission of the chat room log printouts into evidence because: (1) they were not complete, and (2) undetectable “material alterations,” such as changes in either the substance or the names appearing in the chat room logs, could have been made by Riva. The district court ruled that Tank’s objection went to the evidentiary weight of the logs rather than to their admissibility, and allowed the logs into evidence.
Tank also moved to suppress the Zip disk found in his ear on the ground that it was illegally seized under the Fourth Amendment. The district court denied the motion to suppress because it found that the car search was conducted incident to Tank’s arrest.
The jury convicted Tank on all three counts, and the district court sentenced Tank to 285 months of imprisonment.
II.
CHAT ROOM LOGS
We review a district court’s finding that evidence is supported by a proper foundation for an abuse of discretion.
See United States v. Santiago,
46 F.Sd 885, 888 (9th Cir.1995). The foundational “requirement of authentication or identification as a condition precedent to admissibility is satisfied by evidence sufficient to support a finding that the matter in question is what its proponent claims.” Fed. R.Evid. 901(a);
see also United States v. Harrington,
The government made a prima facie showing of authenticity because it presented evidence sufficient to allow a reasonable juror to find that the chat room log printouts were authenticated. In testimony at the evidentiary hearing and at trial, Riva explained how he created the logs with his computer and stated that the printouts, which did not contain the deleted material, appeared to be an accurate representation of the chat room conversations among members of the Orchid Club.
See United States v. Catabran,
The government also established a connection between Tank and the chat room log printouts. There is no question that the chat room log printouts were relevant to prove the conspiracy charge in the indictment and Tank’s participation in the conspiracy. Tank admitted that he used the screen name “Cessna” when he participated in one of the conversations recorded in the chat room log printouts. Additionally, several co-conspirators testified that Tank used the chat room screen name “Cessna” that appeared throughout the printouts. They further testified that *631 when they arranged a meeting with the person who used the screen name “Cessna,” it was Tank who showed up.
On the record before us, it is clear that the government made an adequate foundational showing of the relevance and the authenticity of the chat room log printouts. Thus, we cannot say that the district court abused its discretion by admitting the printouts into evidence and allowing the jury to decide what weight to give that evidence. 5
III.
SEARCH AND SEIZURE
Tank moved to suppress the Zip disk found in his car as the fruit of an illegal search. The district court properly denied the motion, finding that: (1) the car search was incident to Tank’s arrest, and (2) it made no difference that the Zip disk was inside a backpack, which was in plain view in the car. 6
We review a motion to suppress de novo and any factual findings made at the suppression hearing for clear error.
See United, States v. Negrete-Gonzales,
It is undisputed that Tank was lawfully arrested. As was the case in Moore-head, the agents had an arrest warrant. The only other requirement for a valid “search incident to arrest” is that the search be “roughly contemporaneous” with the arrest. Here, the arresting officer searched the car within minutes of the arrest, thereby satisfying the requirement that a search incident to a lawful arrest be conducted roughly contemporaneously with the arrest. 7 Because the lawful ar *632 rest and the search were “roughly contemporaneous,” the seizure of the Zip disk comported with the Fourth Amendment under the “search incident to arrest” exception.
IV.
SUFFICIENCY OF THE EVIDENCE
Tank challenges the sufficiency of the evidence supporting his convictions.
8
Because Tank failed to move for acquittal at trial, we may only review the sufficiency of the evidence for plain error.
See United States v. Morfin,
The facts do not support a claim of plain error. In fact, the evidence is more than sufficient to sustain his convictions. Therefore, we cannot reverse Tank’s convictions for insufficient evidence.
V.
GROUPING OF OFFENSES
The probation officer erroneously concluded in the Presentence Report (“PSR”) that because conduct punishable under U.S. Sentencing Guidelines Manual 9 (“U.S.S.G.”) § 2G2.1 is in the list of fifty offenses excluded from grouping under subsection § 3D1.2(d), conduct punishable under § 2G2.1 can never be grouped. In other words, the probation officer incorrectly asserted in the PSR that the Sentencing Guidelines do not permit grouping of offenses covered by § 2G2.1 under subsections § 3D1.2(a) through § 3D1.2(d). The government urged the district court to follow the interpretation set forth in the PSR. The district court adopted that interpretation and found that Tank’s conduct fell into five groups.
We review de novo the district court’s interpretation of the Sentencing Guidelines and the grouping of offenses.
See United States v. Boos,
The interpretation adopted by the district court is incorrect because it precludes grouping under subsections § 3D1.2(a) through § 3D1.2(c) when, on its face, the list of exclusions under § 3D1.2(d) only bars grouping of the listed offense sections under subsection § 3D1.2(d) itself. In fact, the last sentence of § 3D1.2(d) states “[exclusion of an offense from grouping under this subsection does not necessarily preclude grouping under another subsection.” 10 See U.S.S.G. § 3D1.2(d) (emphasis added). Therefore, the district court should have considered grouping under subsections § 3D1.2(a) through § 3D1.2(c) for offenses precluded from grouping' un *633 der § 3D1.2(d). 11
On remand, the district court should reconsider whether Tank’s conduct can be grouped under § 3D1.2(a), (b), or (c). 12
VI.
UPWARD ADJUSTMENT FOR ROLE IN THE CONSPIRACY
We review the district court’s determination that Tank was an “organizer or leader” for purposes of a four-level enhancement under U.S.S.G. § 3B1.1 for clear error.
See United States v. Lopez-Sandoval,
A. Discrepancy in the Judgment
As the government conceded, there is a discrepancy between the total offense level actually imposed by the district court and the two-level enhancement purportedly imposed for Tank’s role in the offense by the Judgment and Conviction Order. The two-level enhancement purportedly imposed in the Judgment and Conviction Order would have only yielded a total offense level of 36. To arrive at the total offense level of 38 imposed on Tank, the district court must have actually imposed a four-level enhancement for Tank’s role in the offense. A four-level enhancement for Tank’s role in the offense can only be imposed if he was an “organizer or leader.” See U.S.S.G. § 3Bl.l(a). The district court’s calculation yielding a total offense level of 38 from a two-level enhancement for Tank’s role in the offense is clearly erroneous. Therefore, the government further conceded, and we agree, that it is appropriate to remand for resentencing on the issue of whether Tank’s role in the offense warranted an increase in his offense level under § 3B1.1.
B. Organizer or Leader
The PSR did not recommend an upward adjustment for Tank’s role in the offense. At sentencing, however, the government argued that Tank’s sentence should be enhanced for his leadership role. The government argued that the defendant was “particularly significant” to the conspiracy because of his “ability to produce child pornography” and, as such, he was the center of “unique influence and importance within the Orchid Club” making the “prime activity of the club possible.” The government further alleged that Tank had control over the victims themselves. The district court made no findings of fact in support of an upward role adjustment.
In
Lopez-Sandoval,
we held that the defendant could not be deemed an “organizer or leader” when the evidence did “not show that he had any control over his co-conspirators; nor [did] it show that he had organizational or decision-making authority.”
VII.
DOWNWARD ADJUSTMENT FOR ACCEPTANCE OF RESPONSIBILITY
We review the district court’s denial of a sentence reduction for acceptance of responsibility for abuse of discretion.
See United States v. Otis,
VIII.
On the basis of the foregoing, we AFFIRM Tank’s convictions. We REVERSE Tank’s sentence in part and REMAND for resentencing consistent with this opinion.
Notes
. A "chat room" is a public or private Internet site that allows people to send "real time” typed messages to others who are simultaneously connected to that Internet site.
. The only evidentiary issue raised by Tank concerning the chat room log printouts is whether a proper foundation was laid for the district court to admit the logs into evidence. Tank did not argue on appeal that the logs were inadmissible under Fed.R.Evid. 403 (unfair prejudice or misleading to the jury), 801(d)(2) (party or co-conspirator admission), 802 (hearsay), 1002 (best evidence), or any other rule.
. The Orchid Club was a private, password protected chat room. We have already summarized the Orchid Club's activities in deciding an appeal by another of Tank's co-conspirators.
See United States v. Laney,
. Tank also argues that this court should apply the same criteria used to determine the admissibility of audiotapes produced and proffered by the government to determine whether Riva’s hard drive was properly authenticated. However, even in the context of audiotapes, the criteria for admissibility are only
guidelines
that can be useful when the
government produced the recording. See United States v. Matta-Ballesteros,
. Law enforcement officers are permitted to search the entire passenger compartment of a car, including the inside of containers, during a "search incident to arrest.”
United States v. Ramos-Oseguera,
. Tank relies on
United States v. Ramos-Oseguera,
for the proposition that the search of his car was not incident to his arrest because the search was not “roughly contemporaneous” with the arrest. In
Ramos-Oseguera,
we held that the search was not incident to the arrest because it was not "contemporaneous to the arrest.”
Id.
at 1036.
Ramos-Oseguera
does not indicate how much time elapsed between the arrest and the search, but the only reasonable inference is that considerably more time passed between the search and arrest in
Ramos-Oseguera
than in this case. While we surely meant to describe the amount of time that elapsed between the search and the arrest rather than to list dis-positive facts, we stated in
Ramos-Oseguera
that the "search occurred after the car was moved [to the police station], the defendants
*632
were inside the police station, and the police decided to have the car towed.”
. Tank also challenges his conviction under 18 U.S.C. § 2252 because, he contends, no evidence supports this conviction other than the Zip disk and chat room logs. However, this argument is vitiated by our determination thal the Zip disk and chat room logs were properly admitted into evidence.
. The U.S. Sentencing Guidelines as amended on November 1, 1995 apply to this case. Hereinafter, U.S. Sentencing Guideline provisions may be referenced by section number only.
. The Sentencing Guidelines clearly refer to § 3D1.2(d) as a "subsection.” The fifty excluded sentencing guideline sections listed under § 3D 1.2(d) are "excluded from the operation of this subsection." U.S.S.G. § 3D1.2 (emphasis added). Furthermore, “certain guidelines are specifically excluded from the operation of subsection (d) ” U.S.S.G. § 3D 1.2, comment, (n.6) (emphasis added).
. The PSR recommended two groups, the government initially advocated six groups, and the district court found five groups. The Sentencing Guidelines were intended to provide "reasonable uniformity in sentencing by narrowing the wide disparity in sentences imposed for similar criminal offenses.” U.S.S.G. Ch. 1, Pt. A, intro, comment, n. 3. Yet, in this case, the probation officer, the U.S. Attorney, and the district court each calculated a different offense level.
. At oral argument on appeal, defense counsel apparently conceded that § 3D1.2(b) is the only subsection that could be applicable to the circumstances of this case.
