U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
GENERAL PROVISIONS
IMPORT REQUIREMENTS
EXPORT REQUIREMENTS
POST-IMPORTATION DUTY REFUND CLAIMS
RULES OF ORIGIN
TARIFF PREFERENCE LEVEL
ORIGIN VERIFICATIONS AND DETERMINATIONS
PENALTIES
GOODS RETURNED AFTER REPAIR OR ALTERATION
RETROACTIVE PREFERENTIAL TARIFF TREATMENT FOR TEXTILE AND APPAREL GOODS