United States v. Baxter

CourtCourt of Appeals for the First Circuit
DecidedJune 16, 2026
Docket25-1056
StatusPublished

This text of United States v. Baxter (United States v. Baxter) is published on Counsel Stack Legal Research, covering Court of Appeals for the First Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
United States v. Baxter, (1st Cir. 2026).

Opinion

United States Court of Appeals For the First Circuit

No. 25-1056

UNITED STATES,

Appellee,

v.

PATRICK BAXTER,

Defendant, Appellant.

APPEAL FROM THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF MASSACHUSETTS

[Hon. Allison D. Burroughs, U.S. District Judge]

Before

Gelpí, Thompson, and Montecalvo, Circuit Judges.

Michael Pabian for appellant.

Alexia R. De Vincentis, Assistant United States Attorney, with whom Leah B. Foley, United States Attorney, was on brief, for appellee.

June 8, 2026 GELPÍ, Circuit Judge. Patrick Baxter ("Baxter") appeals

from his jury convictions for receipt, possession, and production

of child pornography. He challenges the denial of his pre-trial

motion to suppress evidence, the sufficiency of the evidence

supporting his conviction for production of child pornography

under 18 U.S.C. § 2251(a), the constitutionality of that same

statute as applied to him, the admission of certain testimonial

evidence, and the enhancements applied to his sentence. For the

reasons that follow, we reject his claims and affirm his conviction

and sentence.

I. BACKGROUND

A. Facts

"With respect to suppression, our account gives credence

to the facts supportably found by the district court." United

States v. Rivera-Morales, 961 F.3d 1, 5 (1st Cir. 2020). Regarding

the sufficiency challenge, we recite "the facts in the light most

favorable to the verdict." United States v. Buoi, 84 F.4th 31, 34

(1st Cir. 2023) (quoting United States v. Paz-Alvarez, 799 F.3d

12, 18 (1st Cir. 2015)). Lastly, when reviewing the challenges of

sentencing error, "we take the facts from the trial record, the

undisputed portions of the presentence investigation report, and

the transcript of the sentencing hearing." United States v. Brown,

26 F.4th 48, 53 n.1 (1st Cir. 2022). We begin by summarizing the

- 2 - relevant facts, adding more detail as needed throughout our

discussion.

On October 29, 2021, the Federal Bureau of Investigation

(FBI) applied for a warrant to search Baxter's residence in

Melrose, Massachusetts, for evidence of illegal possession and

receipt of child pornography. The FBI attached an affidavit from

Special Agent Bryce Montoya ("S.A. Montoya") that described the

basis for probable cause.

In the affidavit, S.A. Montoya explained that the FBI

monitored "Freenet," which is "an Internet-based peer-to-peer

(P2P) network that allows users to anonymously share files," and

gathered information revealing that a user sent requests for child

pornography from an IP address that was later identified as

Baxter's. Because the showing of probable cause relied on

information derived from Freenet, he described the network's

mechanics and the investigative techniques used by the FBI. We

reiterate that explication here.

Freenet users agree to provide the network with a portion

of storage space on their hard drives. When a user uploads a file

onto Freenet, the software breaks it into pieces and encrypts each

piece. These pieces are then randomly distributed and stored

throughout the network of peers. The software generates an index

listing all the file's pieces as well as a unique key -- consisting

of letters, numbers, and special characters -- that can be used to

- 3 - download the file. Freenet users share these keys on online

platforms, such as message boards or websites.

Once a user obtains a key, to download a file, a user

must input the key into Freenet. If the correct key is entered,

Freenet requests the individual pieces of the file from that user's

peers. If one of those peers does not have those pieces in its

storage, that peer will "divide up and ask its peers for the

pieces, and so on." This means, for example, that:

if User "A" has 10 peers and requests 1000 pieces of a file, roughly 100 pieces are requested from each one of User A's peers[. . . .]If Peer "B" receives User A's request for 100 pieces of the file, but does not have any of those pieces in its storage, Peer B forwards on the request for those pieces to Peer B's peers. If Peer B has 10 peers of its own, roughly 10 pieces are requested from each one of Peer B's peers.

For its investigative purposes, law enforcement uses a

modified version of Freenet that allows it, once it has inserted

itself in the Freenet universe, to view information about requests

for file pieces, including the number of peers those peers report

to have, and the remaining number of times a request for a piece

may be forwarded. And although the Freenet software "attempts to

hide the identity of [a file] requestor," a Freenet user's IP

address is visible to other users when they request a file or relay

another's request. Thus, regardless of whether a law enforcement

officer employs its modified version of Freenet or uses the normal,

- 4 - publicly-available version, the officer can view a requestor's IP

address.

Law enforcement investigates Freenet users who request

file pieces that it suspects to be associated with child

pornography files. When a peer sends a request to a law

enforcement computer, officers apply a mathematical formula that

allows them to "determine the probability of whether the number of

requests received for pieces of a file is significantly more than

one would expect if the peer were merely forwarding the request of

another" user. The methodology relies on the following premise:

"Because a peer that is merely routing another peer's request would

ask its peers for a significantly smaller portion of the pieces of

a file than an original requester," the request recipient can

determine whether a request "is significantly more likely than not

from an original requestor."

After explaining Freenet's mechanics and the FBI's

investigative techniques, S.A. Montoya stated that he reviewed

information gathered from a Freenet user's requests for pieces of

child pornography files from a law enforcement computer. S.A.

Montoya analyzed the number of requested file pieces, the total

number of file pieces required to assemble the files, and the

number of peers the user had. He then concluded that the Freenet

user was the original requestor of three child pornography files.

- 5 - To reveal the subscriber information for the IP address

attached to the request, law enforcement subpoenaed its servicer.

The subpoenaed information revealed that the IP address was

associated with Baxter's home address.

The warrant to search Baxter's home issued on

October 29, 2021. Investigators executed the search warrant on

November 2, 2021, and seized eight electronic devices, including

an Apple MacBook laptop computer and a Samsung solid state drive

("SSD"). Agents conducted an on-site search of the MacBook and

found no child pornography on that device. The SSD, however, was

encrypted and required the expertise of a specialized FBI unit to

determine the password. After gaining access, the agents found

two profiles on the SSD: "Baxter" and "Backup" (the "Backup

account"). The email associated with the Backup account was

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