[Code of Federal Regulations] [Title 19, Volume 2] [Revised as of April 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 19CFR181.71] [Page 377] TITLE 19--CUSTOMS DUTIES CHAPTER I--BUREAU OF CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) PART 181_NORTH AMERICAN FREE TRADE AGREEMENT--Table of Contents Subpart G_Origin Verifications and Determinations Sec. 181.71 Denial of preferential tariff treatment dependent on origin verification and determination. Except where a Certificate of Origin either is not submitted when requested under Sec. 181.22(b) of this part or is not acceptable and a corrected Certificate is not submitted or accepted as provided in Sec. 181.22(c) of this part and except as otherwise provided in Sec. 181.23 of this part and except in the case of a pattern of conduct provided for in Sec. 181.76(c) of this part, Customs shall deny preferential tariff treatment on an imported good, or shall deny a post-importation claim for a refund filed under subpart D of this part, only after initiation of an origin verification under Sec. 181.72(a) of this part which results in a determination that the imported good does not qualify as an originating good or should not be accorded such treatment for any other reason as specifically provided for elsewhere in this part.