Regulations last checked for updates: May 02, 2025

Title 19 - Customs Duties last revised: Apr 11, 2025
authority: 5 U.S.C. 301; 19 U.S.C. 66,1202,Harmonized,1551,1552,1553,1623,1624; Section 18.1 also issued under 19 U.S.C. 1484,1557,1490; Section 18.2 also issued under 19 U.S.C. 1551a; Section 18.3 also issued under 19 U.S.C. 1565; Section 18.4 also issued under 19 U.S.C. 1322,1323; Section 18.7 also issued under 19 U.S.C. 1490,1557; 1646a; Section 18.11 also issued under 19 U.S.C. 1484; Section 18.12 also issued under 19 U.S.C. 1448,1484,1490; Section 18.13 also issued under 19 U.S.C. 1498(a); Section 18.14 also issued under 19 U.S.C. 1498. Section 18.25 also issued under 19 U.S.C. 1490. Section 18.26 also issued under 19 U.S.C. 1490. Section 18.31 also issued under 19 U.S.C. 1553a.
source: CBP Dec. 17-13, 82 FR 45394, Sept. 28, 2017, unless otherwise noted.