CFR›Title 17›Chapter I›Part 166 ContainsSections 166.1–166.5CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 166—CUSTOMER PROTECTION RULES Sections 166.1 § 166.1 Definitions. 166.2 § 166.2 Authorization to trade. 166.3 § 166.3 Supervision. 166.4 § 166.4 Branch offices. 166.5 § 166.5 Dispute settlement procedures. Authority7 U.S.C. 1a, 2, 6b, 6c, 6d, 6g, 6h, 6k, 6l, 6o, 7, 12a, 21, and 23, as amended by the Commodity Futures Modernization Act of 2000, appendix E of Pub. L. 106-554, 114 Stat. 2763 (2000). Previous 165 Part 165—Whistleblower Rules Next 170 Part 170—Registered Futures Associations