(B) a person appointed by the court where the action is pending to administer oaths and take testimony.
(B) under a letter of request, whether or not captioned a “letter rogatory”;
(C) on notice, before a person authorized to administer oaths either by federal law or by the law in the place of examination; or
(D) before a person commissioned by the court to administer any necessary oath and take testimony.
(B) without a showing that taking the deposition in another manner is impracticable or inconvenient.
(4) Letter of Request — Admitting Evidence. Evidence obtained in response to a letter of request need not be excluded merely because it is not a verbatim transcript, because the testimony was not taken under oath, or because of any similar departure from the requirements for depositions taken within the United States.
US Supreme Court // ©
(As amended Dec. 27, 1946, eff. Mar. 19, 1948; Jan. 21, 1963, eff. July 1, 1963; Apr. 29, 1980, eff. Aug. 1, 1980; Mar. 2, 1987, eff. Aug. 1, 1987; Apr. 22, 1993, eff. Dec. 1, 1993; Apr. 1, 2007, eff. Dec. 1, 2007.)