Title 19 of the United States Code outlines the role of customs and duties in the United States Code.
19 U.S.C. ch. 1—Collection Districts, Ports, And Officers19 U.S.C. ch. 1a—Foreign Trade Zones19 U.S.C. ch. 2—The Tariff Commission19 U.S.C. ch. 3—The Tariff and Related Provisions19 U.S.C. ch. 4—Tariff Act of 193019 U.S.C. ch. 5—Smuggling19 U.S.C. ch. 6—Trade Fair Program19 U.S.C. ch. 7—Trade Expansion Program19 U.S.C. ch. 8—Automotive Products19 U.S.C. ch. 9—Visual and Auditory Materials of Educational, Scientific, and Cultural Character19 U.S.C. ch. 10—Customs Service19 U.S.C. ch. 11—Importation of Pre-Columbian Monumental or Architectural Sculpture or Murals19 U.S.C. ch. 12—Trade Act of 197419 U.S.C. ch. 13—Trade Agreements Act of 197919 U.S.C. ch. 14—Convention on Cultural Property19 U.S.C. ch. 15—Caribbean Basin Economic Recovery19 U.S.C. ch. 16—Wine Trade19 U.S.C. ch. 17—Negotiation and Implementation of Trade Agreements19 U.S.C. ch. 18—Implementation of Harmonized Tariff Schedule19 U.S.C. ch. 19—Telecommunications Trade19 U.S.C. ch. 20—Andean Trade Preference19 U.S.C. ch. 21—North American Free Trade19 U.S.C. ch. 22—Uruguay Round Trade Agreements19 U.S.C. ch. 23—Extension Of Certain Trade Benefits To Sub-Saharan Africa19 U.S.C. ch. 24—Bipartisan Trade Promotion Authority19 U.S.C. ch. 25—Clean Diamond Trade