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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 19
Chapter I
Part 177
Subpart A - Subpart A—General Ruling Procedure
§ 177.1 - General ruling practice and definitions.
§ 177.2 - Submission of ruling requests.
§ 177.3 - Nonconforming requests for rulings.
§ 177.4 - Oral discussion of issues.
§ 177.5 - Change in status of transaction.
§ 177.6 - Withdrawal of ruling requests.
§ 177.7 - Situations in which no ruling will be issued.
§ 177.8 - Issuance of rulings.
§ 177.9 - Effect of ruling letters.
§ 177.10 - Publication of decisions.
§ 177.11 - Requests for advice by field offices.
§ 177.12 - Modification or revocation of interpretive rulings, protest review decisions, and previous treatment of substantially identical transactions.
§ 177.13 - Inconsistent CBP decisions.
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