2006—
Pub. L. 109–295, title V, § 551(b), Oct. 4, 2006,
120 Stat. 1390, added item 554 “Border tunnels and passages”.
Pub. L. 109–177, title III, § 311(b), Mar. 9, 2006,
120 Stat. 242, added item 554 “Smuggling goods from the United States”.
1984—
Pub. L. 98–547, title III, § 301(b), Oct. 25, 1984,
98 Stat. 2771, added item 553.