28 U.S.C. § 2247

On application for a writ of habeas corpus documentary evidence, transcripts of proceedings upon arraignment, plea and sentence and a transcript of the oral testimony introduced on any previous similar application by or in behalf of the same petitioner, shall be admissible in evidence.

(June 25, 1948, ch. 646, 62 Stat. 966.)

Derived from H.R. 4232, Seventy-ninth Congress, first session. It is declaratory of existing law and practice.