{"data":{"id":"us/19-cfr-159.31","jurisdiction":"us","citation":"19 CFR 159.31","heading":"Rates to be used.","body":"Except as otherwise specified in this subpart, no rate or rates of exchange shall be used to convert foreign currency for Customs purposes other than a proclaimed rate or certified rate or rates.","path":["Title 19—Customs Duties","CHAPTER I—U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY","PART 159—LIQUIDATION OF DUTIES","Subpart C—Conversion of Foreign Currency"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-19.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:40Z","sha256":"f3e7fe8fdac337f095709217ca2c7cbff5b2f737e1ccbb68988f666592680476","source_id":"us-cfr","stale":true,"prev":"us/19-cfr-159.22","next":"us/19-cfr-159.32"},"notice":"GroundRules: Original legal text. Not legal advice."}