hearing designated pursuant to paragraph (1). Any such request shall be accompanied by a detailed written justification of the relevance of the testimony of each requested witness to the investigation described in the first section of this resolution. (4) (A) The ranking minority member of the Committee on Ways and Means is authorized, with the concurrence of the chair of the Committee on Ways and Means, to require, as deemed necessary to the investigation— (i) by subpoena or otherwise— (I) the attendance and testimony of any person (including at a taking of a deposition)