United States v. Conner

District Court, District of Columbia·Decided August 3, 2026·No. Criminal No. 2024-0350·Published

Opinion

UNITED STATES DISTRICT COURT FOR THE DISTRICT OF COLUMBIA

UNITED STATES

v.

Criminal Action No. 24 - 350 (LLA)

JOHN RAYMOND CONNER, III,

Defendant.

MEMORANDUM OPINION AND ORDER Defendant John Raymond Conner, III, is charged by superseding indictment with eighteen offenses: First-Degree Sexual Abuse While Armed (Aggravating Circumstances), in violation of D.C. Code §§ 22-3002(a)(1), 22-3020(a)(5), 22-3020(a)(6), and 22-4502 (Counts One through Eight); Kidnapping While Armed, in violation of D.C. Code §§ 22-2001 and 22-4502 (Count Nine); Assault with a Dangerous Weapon, in violation of D.C. Code § 22-402 (Count Ten); Blackmail, in violation of D.C. Code § 22-3252 (Count Eleven); Failure to Register as a Sex Offender, in violation of 18 U.S.C. § 2250(a) (Count Twelve); and Commission of a Crime of Violence While Failing to Register as a Sex Offender, in violation of 18 U.S.C. § 2250(d) (Counts Thirteen through Eighteen). ECF No. 35. The court has entered a plea of not guilty on Mr. Conner’s behalf, Aug. 7, 2025 Minute Entry, and scheduled a trial date of October 26, 2026, see May 28, 2026 Minute Entry.

In July 2026, the United States filed a motion to take a deposition pursuant to Federal Rule of Criminal Procedure 15. ECF No. 74. After briefing, ECF Nos. 74 to 76, the court denied the motion without prejudice to refiling, ECF No. 78. Before the court is the United States’ amended

motion to take a Rule 15 deposition, ECF No. 79, which is fully briefed, ECF Nos. 79, 81.1 For the reasons explained, the court grants the motion.

I. LEGAL STANDARD

Under Rule 15, a party can seek leave to take a deposition of a “prospective witness . . . in order to preserve testimony for trial.” Fed. R. Crim. P. 15(a)(1). “The court may grant the motion because of exceptional circumstances and in the interest of justice.” Id. “To demonstrate that ‘exceptional circumstances’ necessitate a Rule 15 deposition, the party seeking the deposition must show: ‘(1) the materiality of the testimony; and (2) the unavailability of the witness to testify at trial.’” United States v. Trabelsi, No. 06-CR-89, 2023 WL 4341429, at *2 (D.D.C. Apr. 5, 2023) (quoting United States v. Cooper, 947 F. Supp. 2d 108, 112 (D.D.C. 2013)); see United States v. Kelley, 36 F.3d 1118, 1125 (D.C. Cir. 1994) (same).

“In assessing whether testimony is material for Rule 15(a)(1) purposes, courts have used the standard developed for applying and interpreting Brady v. Maryland, 373 U.S. 83 (1963).” Trabelsi, 2023 WL 4341429, at *2 (quoting United States v. Vo, 53 F. Supp. 3d 77, 81 (D.D.C. 2014)). “[E]vidence is ‘material’ within the meaning of Brady when there is a reasonable probability that, had the evidence been disclosed, the result of the proceeding would have been different.” Id. (alteration in original) (quoting Smith v. Cain, 565 U.S. 73, 75 (2012)). “[T]he witness need not provide totally unique testimony; nor does she need to be a ‘critical’ witness.” Id. (alteration in original) (quoting Vo, 53 F. Supp. 3d at 82). But “the evidence or testimony

1 On July 31, 2026, the United States emailed the court and opposing counsel a copy of its reply in support of the amended motion, explaining that technical issues with CM/ECF precluded it from electronically filing the reply. The court accepts the reply as timely filed and will forward the filing to the Clerk’s Office for docketing. And the court will refer in this opinion to the United States’ reply as “Reply” because it currently does not have a CM/ECF docket number.

must . . . not [be] corroborative or cumulative of other evidence.” Vo, 53 F. Supp. 3d at 82 (alterations in original) (quoting United States v. Jefferson, 594 F. Supp. 2d 655, 667 (E.D. Va. 2009)).

As for unavailability, “[c]ourts evaluate whether a witness is ‘unavailable’ for purposes of Rule 15(a)(1) ‘by reference to Federal Rule of Evidence 804(a).’” Trabelsi, 2023 WL 4341429, at *3 (quoting Vo, 53 F. Supp. 3d at 81). Under Rule 804(a)(5), a person is “unavailable as a witness” if she “is absent from the trial or hearing and the . . . proponent [of the person’s testimony] has not been able, by process or other reasonable means, to procure . . . [her] attendance.” Fed. R. Evid. 804(a)(5); see United States v. Straker, 567 F. Supp. 2d 174, 180 (D.D.C. 2008). “[T]he party seeking the deposition need not prove conclusively that the prospective deponent will be unavailable to testify at trial,” Trabelsi, 2023 WL 4341429, at *3 (quoting Cooper, 947 F. Supp. 2d at 113), but to grant a Rule 15(a)(1) motion, the court must conclude that “a substantial likelihood exists that [she] . . . will not testify at trial,” id. (alterations in original) (quoting United States v. Drogoul, 1 F.3d 1546, 1553 (11th Cir. 1993)); see Vo, 53 F. Supp. 3d at 81; Cooper, 947 F. Supp. 2d at 113. “When the question is close[,] a court may allow a deposition in order to preserve a witness’[s] testimony, leaving until trial the question of whether the deposition will be admitted as evidence.” United States v. Mann, 590 F.2d 361, 366 (1st Cir. 1978); see United States v. Eyong, No. 06-CR-305, 2007 WL 1576309 (D.D.C. May 30, 2007) (“[T]he text and structure of Rule 15, as well as judicial opinions interpreting the rule, distinguish between the availability of a deposition and the eventual admissibility of the deposition testimony at trial.”).

II. DISCUSSION

The United States seeks a Rule 15 deposition of Bode Technology scientist Oluwakemi Sowemimo. ECF No. 79, at 1. Ms. Sowemimo “conducted one of the steps in

laboratory work in the DNA testing of the sexual assault kit” of alleged victim A.S. Id. at 8. Specifically, she completed DNA “amplification,” id. at 8, which involves “copying each DNA segment of interest . . . using the polymerase chain reaction method” so that the DNA “is visible to the detection instrument,” id. at 6. According to the United States, the testing “ultimately showed [A.S.’s] and [Mr. Conner’s] DNA in several of the sexual assault kit swabs.” ECF No. 74, at 3. As the government concedes, Mr. Conner has a Sixth Amendment right to confront and cross-examine Ms. Sowemimo. ECF No. 79, at 9.

Ms. Sowemimo, however, is a Nigerian citizen who intends to return to Nigeria in early August 2026 because her visa expires on or about August 15, 2026. Id. at 1, 11. She currently holds an F-1 Curricular Practical Training (“CPT”) student visa, which has allowed her to complete undergraduate and graduate degrees while working for Bode Technology. Id. at 11. Due to the upcoming expiration of her visa, Ms. Sowemimo applied for an H-1B work visa, id., which is available for certain “nonimmigrant professionals in specialty occupations . . . to temporarily enter the United States for employment in a specialty occupation,” 20 C.F.R. § 655.700; see 20 C.F.R. § 655.715 (explaining that “specialty occupation means an occupation that requires theoretical and practical application of a body of specialized knowledge, and attainment of a bachelor’s or higher degree (or its equivalent) in the specific specialty”); see also Nigeria: Reciprocity Schedule, U.S. Dep’t of State (indicating that the United States allows Nigerians to apply for H-1B visas).2 Ms. Sowemimo was not selected in the H-1B visa lottery. ECF No. 79, at 11.

In the United States’ view, recent “significant visa restrictions” imposed by the Executive Branch “cause uncertainty regarding if and when [Ms. Sowemimo] may return to the United

2 Available at https://perma.cc/93M9-SSCG.

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