San Diego is home to the busiest land border crossing in the world. San Ysidro alone processes more than 70,000 northbound vehicle crossings and 20,000 pedestrian crossings every day — more than any other land port of entry in the United States. Add Otay Mesa, Tecate, and the Calexico crossings under the San Diego Field Office, and you have one of the most active currency enforcement corridors in the country. This article documents some of the largest and most notable currency seizures in the San Diego area and explains what CBP’s enforcement posture at these crossings means for travelers.
⚠️ Has CBP seized your cash in San Diego? If CBP has seized your currency at San Ysidro, Otay Mesa, or another San Diego area crossing, visit our San Diego currency seizure page for information on your options — or call us at (734) 855-4999 for a free consultation.
Why San Diego Ranks Third Nationally for Currency Seizures
San Diego’s position as the third-highest currency enforcement port in the country is a direct consequence of geography. The San Diego-Tijuana corridor is one of the most heavily trafficked international borders in the world, with tens of millions of crossings per year generating a corresponding volume of enforcement opportunities. The San Diego Field Office operates outbound enforcement on a daily basis at San Ysidro and Otay Mesa — targeting southbound bulk cash representing drug trafficking proceeds being repatriated to Mexican criminal organizations — alongside inbound enforcement on arriving travelers who failed to file a FinCEN 105.
The Tijuana corridor is one of the primary drug trafficking routes into the United States, and the corresponding southbound cash flow — drug money moving back into Mexico — makes San Diego outbound enforcement a priority that generates tens of millions of dollars in annual seizures. CBP deploys currency detector dogs, non-intrusive imaging technology, and targeting intelligence at all major San Diego crossings as part of sustained outbound enforcement operations.
Notable Large Currency Seizures at San Ysidro
$44,000 Hidden in a Food Bag — January 2025
CBP officers at the San Ysidro port of entry seized $44,000 in currency concealed inside a food bag in January 2025. The concealment method — currency hidden inside what appeared to be a legitimate food item — reflects the creative approaches used to defeat standard inspection at the world’s busiest land border. Currency detector dogs and officer inspection revealed the hidden funds before the vehicle completed its crossing. Both the currency and the vehicle were seized.
Regular Six-Figure Outbound Seizures
San Ysidro generates a consistent pattern of six-figure outbound currency seizures — amounts in the $100,000 to $500,000 range concealed in vehicle modifications, body panels, fuel tanks, and on persons crossing southbound into Tijuana. The sheer volume of traffic at San Ysidro means CBP cannot physically examine every vehicle, which is why the port deploys a layered detection approach: behavioral targeting by experienced officers, currency and drug detector dogs, and non-intrusive imaging technology that can scan vehicle interiors without disassembly. Cases involving purpose-built hidden compartments — the most common vehicle modification method at San Diego crossings — are referred to HSI for criminal investigation alongside the civil forfeiture of the currency and vehicle.
Notable Large Currency Seizures at Otay Mesa
Commercial Cargo Currency Enforcement
Otay Mesa is the primary commercial vehicle crossing in the San Diego area and handles billions of dollars in cross-border trade annually. Commercial trucks crossing at Otay Mesa are subject to CBP examination, and currency concealed in commercial cargo — inside manufactured goods, machinery, or consumer products — is a documented enforcement concern. CBP’s targeting intelligence identifies high-risk commercial shipments for physical examination, and the volume of commercial traffic at Otay Mesa generates enforcement opportunities that go beyond standard passenger vehicle crossings.
Border Patrol Interior Enforcement — I-5 and I-8 Checkpoints
Currency enforcement in the San Diego area is not limited to the ports of entry themselves. U.S. Border Patrol maintains interior checkpoints on I-5 and I-8 north of the border — the primary highway corridors carrying northbound traffic away from the San Diego crossings. Currency detector dogs deployed at these checkpoints have documented numerous significant seizures of bulk cash concealed in vehicles that successfully crossed the border without detection at the port. A seizure made by Border Patrol at an interior checkpoint follows the same legal framework as a port-of-entry seizure — the same CAFRA notice process, the same election of proceedings, the same petition options.
What to Do If CBP Seized Your Cash in San Diego
Whether your seizure occurred at San Ysidro, Otay Mesa, Tecate, or an I-5 or I-8 interior checkpoint, the process for recovering seized currency is the same. Read our customs money seizure legal guide or watch the video series. Read our guide on why you must not contact CBP without an attorney after a seizure. See our currency seizure case outcomes. Call us at (734) 855-4999, send a text message, or reach us on WhatsApp. You can also contact us online for a free consultation.