US lawFederal (United States)RegulationsTitle 46 CFR — ShippingChapter IV — FEDERAL MARITIME COMMISSIONPart 550 — REGULATIONS TO ADJUST OR MEET CONDITIONS UNFAVORABLE TO SHIPPING IN THE FOREIGN TRADE OF THE UNITED STATESSubpart E — Proceedings550.50346 C.F.R. § 550.503Subpoenas.Last amended: 2016Year: 2026Length: 25 wordsOfficial source Cite as 46 C.F.R. § 550.503 (2026)In proceedings under this part, the Commission may by subpoena compel the attendance of witnesses and the production of books, papers, documents, and other evidence.Previous46 C.F.R. § 550.502Next46 C.F.R. § 550.504