Sections 270 to 270c, act July 3, 1930, ch. 851, §§ 1–4, 46 Stat. 1005, 1006, related to international tribunals, the administration of oaths, perjury, testimony of witnesses, production of documentary evidence, subpoena power, contempt and its punishment, the authority of commissioners to take evidence, and to procedure. See section 1782 of Title 28, Judiciary and Judicial Procedure.

Sections 270d to 270g, act July 3, 1930, ch. 851, §§ 5–8, as added June 7, 1933, ch. 50, 48 Stat. 117, 118, related to international tribunals, issuance of subpoenas upon application of United States’ agent to United States district court, proceedings thereon, notice to foreign governments, forwarding of certified transcripts of testimony to agents of United States and any opposing government, perjury and contempt and the penalties therefor, and declared the Supreme Court of the District of Columbia to be a district court of the United States. See section 1782 of Title 28.