CFR›Title 9›Chapter II›Part 201›Subpart B ContainsSections 201.3–201.4CorpusDaily eCFRDisplayed edition2026-06-12Last updated2026-06-12 Subpart B—Administration Sections 201.3 § 201.3 Applicability of regulations in this part. 201.4 § 201.4 Authority. Previous A Subpart A—Definitions Next C Subpart C—Applicability of Industry Rules