United States v. Joshua Welch, 811 F.3d 275

FBI investigated PedoBook, a child‑pornography site on a clandestine network; agents used a Network Investigative Technique (NIT) to identify users by capturing IP addresses and related computer data.
The NIT warrant was executed Nov. 19, 2012; the FBI kept the site active ~3 weeks and later obtained subscriber info linking an IP to Welch’s Florida residence in December 2012.
The FBI obtained and executed a residential search warrant April 9, 2013; Welch was arrested and later received notice of the earlier NIT warrant.
Welch moved to suppress evidence obtained via the NIT warrant, arguing Rule 41(f)(1)(C)/18 U.S.C. § 3103a notice was untimely (notice given beyond 30 days) and thus violated the Fourth Amendment.
At trial Welch sought to cross‑examine an agent with statements from the affidavit supporting the residential search warrant; the district court sustained the government’s hearsay objection and excluded those statements. Welch was convicted and appealed.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Timeliness of notice under Rule 41/§3103a for the NIT warrant	Welch: 30‑day delay ran from ISP subpoena (Dec. 2012); notice in April 2013 was 122 days — Rule 41 violation requiring suppression	Government: delay effectively ran from identification of the individual; Rule 41 may not apply; no prejudice or reckless disregard	Court: Assumed Rule 41 applies but found procedural violation did not violate Fourth Amendment — no prejudice and officers acted in good faith; affirmed admission of evidence
Whether exclusion of affidavit statements violated Confrontation Clause / hearsay rules	Welch: statements in affidavit were prior statements or testimonial and exclusion denied his right to confront evidence used against him	Government: affidavit statements were hearsay, agent was available and extensively cross‑examined; affidavit not offered at trial	Court: Exclusion was not prejudicial; affidavit statements were hearsay and not necessary — no Confrontation Clause violation; conviction stands

United States v. Bell, 480 F.3d 860 (8th Cir.) (standard of review for suppression: clear‑error for facts, de novo for Fourth Amendment)
United States v. Spencer, 439 F.3d 905 (8th Cir.) (Rule 41 violations require prejudice or reckless disregard to warrant suppression)
United States v. Freeman, 897 F.2d 346 (8th Cir.) (procedural Rule 41 violations not per se Fourth Amendment violations)
United States v. Hyten, 5 F.3d 1154 (8th Cir.) (test for prejudice: whether the search would have occurred had rule been followed)
Crawford v. Washington, 541 U.S. 36 (2004) (Confrontation Clause bars admission of testimonial statements unless opportunity for cross‑examination)