CUSTOMS ENFORCEMENT | 2026-09-27

CBP Import Detentions and Seizures: How California Importers Respond (19 U.S.C. § 1499 and § 1595a)

The difference between a detention, an exclusion, and a seizure — the clocks that control each, and the options after a Notice of Seizure.

When CBP holds your shipment, the single most important thing to know is which kind of hold it is — a detention, an exclusion, or a seizure — because each is governed by a different statute, runs on a different clock, and has different response options.

A CBP hold on your shipment is not one thing — it is one of three, and the response depends entirely on which.

Detention vs. Exclusion vs. Seizure — Three Different Things

  • Detention — CBP is holding the goods temporarily while it decides whether they are admissible (19 U.S.C. § 1499).
  • Exclusion — CBP has decided the goods are not admissible and refuses entry; the remedy is a protest.
  • Seizure — CBP has taken the goods as subject to forfeiture because they were, or CBP believes they were, introduced contrary to law (19 U.S.C. § 1595a).

Knowing which one you are facing tells you which deadline is running.

CBP Detention — 19 U.S.C. § 1499: The 5-Day and 30-Day Clocks

Under § 1499(c), when CBP detains merchandise it must decide whether to release or detain within five days (excluding weekends and holidays) after the goods are presented for examination. CBP issues a detention notice and, on request, must tell the importer the reason for the detention, the anticipated length, the nature of any tests or inquiries, and what the importer can do to speed the decision.

Critically, if CBP has not made a final determination on admissibility within 30 days after the merchandise is presented for examination, the merchandise is deemed excluded — and a deemed exclusion can be challenged. The 30-day clock is one of the most powerful tools an importer has: it forces a decision instead of an indefinite hold.

Exclusion — When a Detention Becomes a “No”

If CBP excludes the goods (or they are deemed excluded after 30 days), the importer’s remedy is to file a protest under 19 U.S.C. § 1514 challenging the exclusion. If CBP denies the protest, the importer may bring the dispute to the U.S. Court of International Trade. A well-documented response — proving admissibility, correcting a marking or labeling issue, or providing the agency certification CBP wanted — often gets excluded goods released without litigation.

Seizure and Forfeiture — 19 U.S.C. § 1595a

Section 1595a authorizes CBP to seize and forfeit merchandise that is stolen, smuggled, or clandestinely imported, and merchandise introduced or attempted to be introduced contrary to law. Common triggers include intellectual-property violations, prohibited or restricted goods, false country-of-origin marking, and admissibility problems flagged by CBP or a partner agency. When CBP seizes goods, it issues a Notice of Seizure describing the property, the value, the legal basis, and the importer’s options and deadlines.

Your Options After a Notice of Seizure

A Notice of Seizure typically presents several paths, each with its own deadline stated in the notice:

  • Petition for relief — 19 U.S.C. § 1618 (procedures at 19 C.F.R. Part 171). Ask CBP to remit or mitigate the forfeiture and return the goods, usually with argument and supporting documents. A supplemental petition is available if the first is denied.
  • Offer in compromise — 19 U.S.C. § 1617. Propose a settlement of the government’s claim.
  • Request referral to court. File a claim (and, where required, a bond) so the matter is referred to the U.S. Department of Justice for judicial forfeiture in federal court, where CBP must prove the case. Administrative forfeiture of lower-value property proceeds under 19 U.S.C. §§ 1607–1609, and the Civil Asset Forfeiture Reform Act (18 U.S.C. § 983) governs deadlines and procedures for many judicial cases.
  • Abandon the property — usually the worst option, and rarely advisable without first evaluating a petition.

Choosing the right path is strategic: a petition is faster and cheaper but decided by CBP; a judicial claim puts the burden on the government but takes longer. The deadlines in the notice (often 30 days for key elections) are strict.

Common Reasons CBP Detains or Seizes Imports

  • Intellectual property — counterfeit or infringing goods, and gray-market merchandise (19 U.S.C. § 1526).
  • Country-of-origin marking — goods not properly marked with their country of origin.
  • Forced-labor and supply-chain admissibility — holds under U.S. forced-labor import prohibitions.
  • Partner-agency holds — FDA, USDA, EPA, and other agency requirements that affect admissibility.
  • Valuation, classification, or documentation problems that call admissibility into question.

Deadlines That Control Everything

  • 5 business days — CBP’s initial detain-or-release decision after presentation for examination (§ 1499(c)).
  • 30 days — after which un-decided detained merchandise is deemed excluded (§ 1499(c)).
  • 180 days — to protest an exclusion after CBP’s decision (19 U.S.C. § 1514).
  • The deadline stated in the Notice of Seizure — to petition, make a claim, or otherwise respond (often 30 days).

Because the clocks start from CBP’s paperwork, the first step is always to read the notice carefully and calendar every date.

How a Customs Attorney Responds

Effective response starts with identifying the exact hold and its governing clock, then building the record CBP actually needs — admissibility proof, corrected marking, agency certifications, IP authorization, or evidence rebutting the alleged violation. For seizures, counsel weighs a § 1618 petition against a judicial claim, prepares the strongest mitigation showing, and preserves every deadline. The objective is to get the goods released or the forfeiture remitted quickly, at the lowest cost, and to keep the matter from spilling into a broader § 1592 penalty.

Frequently Asked Questions

What is the difference between a detention and a seizure?

A detention is a temporary hold while CBP decides admissibility (19 U.S.C. § 1499). A seizure means CBP has taken the goods as subject to forfeiture because it believes they were introduced contrary to law (19 U.S.C. § 1595a). They run on different clocks and have different responses.

How long can CBP detain my shipment?

CBP must decide to detain or release within five business days of presentation for examination, and if it has not made an admissibility decision within 30 days, the goods are deemed excluded (§ 1499(c)) — which you can then challenge.

My goods were seized. What are my options?

The Notice of Seizure will list them — typically a petition for relief (§ 1618), an offer in compromise (§ 1617), a claim referring the case to court, or abandonment. Each has a deadline; act before it runs.

Can I get excluded goods released?

Often yes — by proving admissibility or curing the defect (for example, correcting marking or providing an agency certification), and by protesting the exclusion under 19 U.S.C. § 1514 if necessary.

Does a seizure become a penalty?

It can. If CBP concludes an entry involved a material false statement, a separate penalty under 19 U.S.C. § 1592 may follow — another reason to respond carefully and early.

Talk to a Customs Detention and Seizure Attorney

A detention notice, an exclusion, or a Notice of Seizure each starts a strict clock, and the deemed-exclusion and petition deadlines pass quickly. Trembach Law Firm helps California importers respond to CBP detentions, exclusions, and seizures and pursue release or remission. Call (818) 514-7680 and bring the CBP notice, your entry documents, and any correspondence.

Contact Trembach Law Firm at (818) 514-7680 for a confidential consultation.

Trembach Law Firm | 27001 Agoura Road, Suite 350, Calabasas, CA 91301