7 C.F.R. § 29.405
The Director, in lieu of onsite inspection, may approve submission by the importer of samples where time, geographical distance, or availability of inspectors prevent a timely onsite inspection, or where tobacco is classified as a "temporary importation under bond" as defined in 19 CFR 10.31 et seq. The importer shall certify that sampling was conducted in accordance with procedures approved by the Director. All tobacco inspected by submitted sample is subject to spot-checking at the discretion of the Director. Submitted samples shall be disposed of in a manner approved by the Director unless return of the sample is requested by the importer at the time of submission. Samples will only be returned at the importer's expense.
7 C.F.R. §29.405