Title 19: Customs Duties
CHAPTER I: U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED)
PART 151: EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE
Subpart A: General
151.3 - Disclosure of examination packages.
Information as to the particular packages which will be examined shall not be made available to the importer, his agent, or any person other than Customs officers necessarily concerned, until the merchandise has arrived within the limits of the port of entry.