19 CFR § 10.179 - Canadian crude petroleum subject to a commercial exchange agreement between United States and Canadian refiners.
(a) Crude petroleum (as defined in Chapter 27, Additional U.S. Note 1, Harmonized Tariff Schedule of the United States (19 U.S.C. 1202)) produced in Canada may be admitted free of duty if the entry is accompanied by a certificate from the importer, or its electronic equivalent, establishing that:
(1) The petroleum is imported pursuant to a commercial exchange agreement between United States and Canadian refiners which has been approved by the Secretary of Energy;
(2) An equivalent amount of domestic or duty-paid foreign crude petroleum on which the importer has executed a written waiver of drawback, has been exported to Canada pursuant to the export license and previously has not been used to effect the duty-free entry of like Canadian products; and,
(3) An export license has been issued by the Secretary of Commerce for the petroleum which has been exported to Canada.
(b) The provisions of this section may be applied to:
(1) Liquidated or reliquidated entries if the required certification is filed with CBP, either at the port of entry or electronically on or before the 180th day after the date of entry; and
(2) Articles entered, or withdrawn from warehouse, for consumption, pursuant to a commercial exchange agreement.
(c) Verification of the quantities of crude petroleum exported to or imported from Canada under such a commercial exchange agreement shall be made in accordance with import verification provided in Part 151, Subpart C, Customs Regulations (19 CFR part 151, subpart C).