Title 18, Crimes and Criminal ProcedureRelease 119-102

§555 Border Tunnels and Passages

Title 18 › PART I — CRIMES › CHAPTER 27 — CUSTOMS › § 555

Last updated Aug 21, 2026|Official source

Summary

Making or paying for an underground tunnel that crosses the U.S. border is a federal crime, unless it is an authorized tunnel the Secretary of Homeland Security knows about and ICE can inspect. Knowingly doing this can bring fines and up to 20 years in prison. Owners who know or recklessly ignore a tunnel on their land can be fined and face up to 10 years. Using such a tunnel to smuggle people or banned items (including goods in violation of section 545, drugs, weapons of mass destruction, or members of terrorist groups as defined in section 2339B(g)(6)) doubles the prison maximum that would otherwise apply. Trying or planning these crimes brings the same penalties as actually doing them.

Full Legal Text

Title 18, §555

Crimes and Criminal Procedure, Source: USLM XML via OLRC

(a)Any person who knowingly constructs or finances the construction of a tunnel or subterranean passage that crosses the international border between the United States and another country, other than a lawfully authorized tunnel or passage known to the Secretary of Homeland Security and subject to inspection by Immigration and Customs Enforcement, shall be fined under this title and imprisoned for not more than 20 years.
(b)Any person who knows or recklessly disregards the construction or use of a tunnel or passage described in subsection (a) on land that the person owns or controls shall be fined under this title and imprisoned for not more than 10 years.
(c)Any person who uses a tunnel or passage described in subsection (a) to unlawfully smuggle an alien, goods (in violation of section 545), controlled substances, weapons of mass destruction (including biological weapons), or a member of a terrorist organization (as defined in section 2339B(g)(6)) shall be subject to a maximum term of imprisonment that is twice the maximum term of imprisonment that would have otherwise been applicable had the unlawful activity not made use of such a tunnel or passage.
(d)Any person who attempts or conspires to commit any offense under subsection (a) or subsection (c) of this section shall be subject to the same penalties as those prescribed for the offense, the commission of which was the object of the attempt or conspiracy.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

Amendments

2012—Pub. L. 112–127 added subsec. (d). 2007—Pub. L. 110–161 renumbered section 554, relating to border tunnels and passages, as this section.

Statutory Notes and Related Subsidiaries

Findings Pub. L. 112–127, § 2, June 5, 2012, 126 Stat. 370, provided that: “Congress finds the following: “(1) Trafficking and smuggling organizations are intensifying their efforts to enter the United States through tunnels and other subterranean passages between Mexico and the United States. “(2) Border tunnels are most often used to transport narcotics from Mexico to the United States, but can also be used to transport people and other contraband. “(3) From Fiscal Year 1990 to Fiscal Year 2011, law

Enforcement

authorities discovered 149 cross-border tunnels along the border between Mexico and the United States, 139 of which have been discovered since Fiscal Year 2001. There has been a dramatic increase in the number of cross-border tunnels discovered in Arizona and California since Fiscal Year 2006, with 40 tunnels discovered in California and 74 tunnels discovered in Arizona. “(4) section 551 of the Department of Homeland Security Appropriations Act, 2007 (Public Law 109–295) added a new section to title 18, United States Code (18 U.S.C. 555), which—“(A) criminalizes the

Construction

or financing of an unauthorized tunnel or subterranean passage across an international border into the United States; and “(B) prohibits any person from recklessly permitting others to construct or use an unauthorized tunnel or subterranean passage on the person’s land. “(5) Any person convicted of using a tunnel or subterranean passage to smuggle aliens, weapons, drugs, terrorists, or illegal goods is subject to an enhanced sentence for the underlying offense. Additional sentence enhancements would further deter tunnel activities and increase prosecutorial options.”

Reference

Citations & Metadata

Citation

18 U.S.C. § 555

Title 18, Crimes and Criminal Procedure

Last Updated

Aug 21, 2026

Release point: 119-102