Code of Federal Regulations Title 19. Customs Duties § 19.151.68 Merchandise to be sampled and tested by Customs

(a) All importation of wool or hair subject to duty at a rate per clean kilogram, except importations entered directly for manipulation under the provisions of section 562, Tariff Act of 1930, as amended (19 U.S.C. 1562), or for manufacture under the provisions of section 311, Tariff Act of 1930, as amended (19 U.S.C. 1311);

(b) All imported wool or hair manipulated under the provisions of section 562, Tariff Act of 1930, as amended (19 U.S.C. 1562) and dutiable after manipulation as wool or hair at a rate per clean kilogram;  and

(c) Such other imported wool or hair as an authorized CBP official may designate.