There’s no single official ‘US Customs list of prohibited items’ published as one master document. What Customs and Border Protection (CBP) actually enforces is two different regimes: goods that are prohibited, meaning forbidden by law to enter the country under any circumstances, and goods that are restricted, meaning they can enter only with the right permit, license, or certification from the agency that regulates them. Confusing the two is the single most common mistake in blog-level guidance on this topic, and it’s the difference between a shipment that clears with paperwork and one that gets destroyed at the port.
This guide separates the two categories with the actual controlling agency for each, covers the wildlife, food, firearms, chemical, and consumer-product rules importers get wrong most often, and walks through what happens at the port when a restricted item arrives without the documentation CBP needs to release it.
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Prohibited vs. Restricted: The Line CBP Actually Draws
CBP’s own definition is precise: prohibited items are ‘forbidden by law to enter the United States,’ full stop, while restricted items require ‘special licenses or permits…from a federal agency before the item is allowed to enter.’ The practical difference is enormous. A restricted shipment that shows up without its permit is a paperwork problem, often fixable, sometimes just slow. A prohibited shipment is not fixable by any document, because the law doesn’t allow that category of good into the country regardless of who’s asking or what they can prove.
That’s also why a category like firearms sits on the restricted side, an ATF import permit gets them through, while counterfeit trademarked goods sit on the prohibited side: no permit exists that legalizes trafficking in a counterfeit mark. Many of the goods that do require a license, rather than being flatly barred, need exactly the kind of Partner Government Agency permit covered in our companion guide to US import licensing, so if a product below turns out to be restricted rather than prohibited, that’s usually where to look next.
| Category | Prohibited example (no permit fixes this) | Restricted example (a permit can fix this) |
|---|---|---|
| Wildlife products | Elephant ivory outside the narrow antique exception | CITES-listed species with a valid FWS/CITES permit |
| Firearms and defense items | Items barred outright under ATF or ITAR rules | Sporting firearms and ammunition with an ATF Form 6 permit |
| Cultural goods | Designated archaeological material without an export certificate | Genuine antiques (100+ years) through a designated port with proof |
| Food and animal products | Bushmeat from African wildlife | Meat and poultry from an FSIS-approved country and establishment |
| Intellectual property | Counterfeit or pirated trademarked goods | Genuine goods that meet FDA or CPSC certification requirements |
Absolutely Prohibited: Nothing Gets These Through
Counterfeit and pirated goods are the largest prohibited category by volume. Importing merchandise bearing a counterfeit trademark or infringing a registered copyright is illegal outright, not a licensing gap, and CBP reports that nearly 90% of its intellectual property seizures in fiscal year 2025 originated from China and Hong Kong. Criminal trafficking in counterfeit goods carries penalties of up to $2 million and 10 years in prison; an individual importer can be fined even without knowing the goods were counterfeit.
Dog and cat fur products are banned outright under the Dog and Cat Fur Protection Act (19 U.S.C. 1308), covering the fur itself and any product, garment or otherwise, that contains it, with no permit pathway and civil and criminal penalties plus forfeiture for violations. Drug paraphernalia, defined broadly under 21 U.S.C. 863 to include pipes, bongs, and similar items primarily intended for use with a controlled substance, is also flatly prohibited; CBP’s penalty for importing it is typically the full domestic value of the shipment, separate from any criminal exposure.
Certain cultural property is prohibited without an export certificate from the country of origin under the Cultural Property Implementation Act (19 CFR 12.104): pre-Columbian archaeological artifacts from Guatemala’s Peten region and specific categories of Peruvian colonial-era material are examples of items the United States has placed under standing import restrictions, and merchandise imported in violation is subject to seizure and forfeiture. Switchblade knives are another flat federal prohibition under 15 U.S.C. 1242, the Switchblade Knife Act, with statutory exceptions narrow enough to be irrelevant to a commercial importer, essentially limited to Armed Forces contracts and a single-arm-carry personal exception. Add absinthe above the legal thujone limit and merchandise from a handful of comprehensively sanctioned origins, and the pattern across every prohibited category is the same: no license fixes it.
Restricted Wildlife, Animal, and Plant Products
Wildlife and wildlife products need an import/export license from the U.S. Fish and Wildlife Service (FWS), and anything on a Convention on International Trade in Endangered Species (CITES) appendix needs a CITES permit on top of that; the shipment also has to move through one of the ports FWS has designated for wildlife unless a separate exception permit is obtained. African elephant ivory is the sharpest example of how far ‘restricted’ can bend toward prohibited in practice: commercial import is barred outright, and the only narrow opening is a genuine antique, 100 years or older and unaltered since 1973, entering through one of thirteen specific antique ports with documentation to prove it.
Live animals and animal germplasm need a USDA Animal and Plant Health Inspection Service (APHIS) Veterinary Services permit. Meat, poultry, and egg products can only enter from countries and specific foreign establishments USDA has already certified as equivalent to the US inspection system; there’s no permit an individual shipment can obtain to bypass that, the exporting facility has to already be on the approved list. Plants, seeds, cut flowers, and a wide range of wood-containing products need a phytosanitary certificate plus a Lacey Act declaration (APHIS PPQ Form 505); APHIS expanded that declaration requirement again in a December 2024 phase that pulled in items like furniture, tools, and boats that previously didn’t need one, exactly the kind of quiet rule change that catches importers off guard.
Restricted Firearms, Chemicals, and Hazardous Materials
Firearms, ammunition, and implements of war need an ATF import permit (Form 6), generally filed through a licensed importer; defense articles on the US Munitions List need a separate license from the State Department’s Directorate of Defense Trade Controls under ITAR. Neither category is prohibited outright, but both require the permit in hand before the shipment departs, not after it arrives.
Industrial chemicals fall under the Toxic Substances Control Act, which requires an importer to certify at entry that the chemical either complies with TSCA or isn’t subject to it. Pesticides and pesticide devices need an EPA Notice of Arrival filed before the shipment lands, and radiation-emitting electronics, certain lasers and specific consumer electronics among them, need a declaration filed with FDA’s Center for Devices and Radiological Health. None of these show up on a general prohibited-items list because they’re not banned; they’re gated behind a specific agency’s paperwork.
Consumer Products, Toys, and Electronics: Where CPSC and FDA Draw the Line
Toys, children’s products, and a wide range of consumer electronics fall under the Consumer Product Safety Commission (CPSC), which requires testing and certification, either a General Certificate of Conformity or a Children’s Product Certificate depending on the product, before the goods can clear. CBP holds shipments that show up without that certification, and CPSC moved to mandatory electronic filing of these certificates in ACE, effective July 8, 2026, which means paper certificates that used to work as a stopgap no longer do. Our CPSC import compliance guide covers the certification and eFiling mechanics in full.
Some of the same electronics also trip FDA’s radiation-control rules if they emit radiation as part of normal operation, which means a single consumer product can carry both a CPSC certification requirement and an FDA declaration requirement at the same time. Treating either one as optional because the other agency already signed off is a common and expensive mistake.
Forced Labor and Origin-Based Import Bans
Section 307 of the Tariff Act (19 U.S.C. 1307) bars the import of any merchandise made wholly or in part with forced labor, and the Uyghur Forced Labor Prevention Act (UFLPA) makes that a rebuttable presumption for goods with any connection to China’s Xinjiang region or to a company on the UFLPA Entity List: CBP treats the goods as forced-labor-tainted unless the importer proves otherwise with clear and convincing evidence, a materially higher bar than ordinary customs documentation. The Entity List itself keeps growing; the Department of Homeland Security’s July 2026 update added 43 companies in its largest-ever single expansion, bringing the total to 187 listed entities.
This kind of origin-based enforcement increasingly overlaps with trade-remedy enforcement more broadly, since goods transshipped to disguise their true country of origin can trigger both a forced-labor hold and separate exposure under antidumping and countervailing duty rules if the true origin is a country subject to an AD/CVD order. Screening suppliers against the UFLPA Entity List before sourcing, rather than after a shipment is already detained, is exactly the kind of ongoing check a trade compliance management program is built to catch. Merchandise from a handful of comprehensively sanctioned countries carries its own separate prohibition, layered on top of whatever product-specific rule would otherwise apply.
What Happens at the Port When a Restricted Item Arrives Without Paperwork
Picture a shipment of exotic leather handbags arriving without the CITES export permit the country of origin was supposed to issue. CBP has five business days from examination to decide whether to release or detain the merchandise under 19 CFR 151.16; once it’s detained, a formal Notice of Detention follows within five business days of that decision, stating what’s missing and what would resolve it. That notice is the fork in the road: a restricted item can still clear if the missing FWS or CITES documentation gets produced within the window CBP allows, sometimes by the exporter issuing it retroactively, sometimes not.
If the paperwork never comes through, the importer is typically required to export or destroy the merchandise rather than abandon it quietly; unresolved cargo left at the port becomes eligible for a General Order warehouse after 15 calendar days, accruing storage charges from day one, and is sold at auction or destroyed after six months if nobody claims it. A genuinely prohibited item, counterfeit goods or dog and cat fur products rather than merely restricted wildlife, skips this whole process. There’s no documentation window, because 19 U.S.C. 1595a(c) authorizes straight seizure and forfeiture for merchandise introduced contrary to law. A licensed customs broker who has actually filed the entry, rather than a general logistics provider, is who typically manages the CBP correspondence here; CargoTrans has been filing these entries since 1989, and the recurring lesson is the same one every time: a restricted shipment survives the process when the paperwork gap gets caught before departure, not after CBP already has the cargo.
Frequently Asked Questions
What items are prohibited by US customs?
Absolutely prohibited items include counterfeit and pirated goods, dog and cat fur products, drug paraphernalia, and specific categories of cultural property and archaeological artifacts under active import restrictions. These can’t be released with any amount of paperwork; CBP’s authority under 19 U.S.C. 1595a(c) is to seize and forfeit them outright.
What items have to be declared at US customs?
Anything regulated by a Partner Government Agency, wildlife and wildlife products, plants and plant products, meat and animal products, firearms, chemicals, and CPSC-regulated consumer goods among them, has to be declared with the specific documentation that agency requires, on top of the standard customs clearance entry filed for every commercial shipment.
What items are exempt from customs?
There’s no blanket customs exemption tied to item type; even low-value shipments generally clear under de minimis or informal entry procedures rather than being exempt from customs review outright. Items that are otherwise restricted, wildlife, food, or regulated chemicals among them, still need their agency-specific permit regardless of shipment value.
What food can't you take through customs?
Most fresh meat, poultry, and many fruits and vegetables can’t enter without USDA or FSIS clearance tied to the country and specific facility of origin, and some are barred outright depending on the pest or disease status of the exporting country. This applies to personal baggage as well as commercial shipments; CBP and USDA agriculture inspectors treat undeclared prohibited food as a civil penalty risk even when the traveler didn’t intend to violate anything.
Can a restricted item become prohibited, or vice versa?
Yes. Ivory is the clearest example: it’s technically a restricted category requiring an FWS permit, but the permitted pathway is so narrow, a genuine antique through one of thirteen designated ports, that it functions almost like a prohibition for anything else. Regulatory changes can also move a product between categories, which is why checking the controlling agency directly, not a static blog list, matters before every shipment.
What happens if customs seizes your package?
CBP sends a written notice of seizure to the importer of record, stating the legal basis and the deadline, generally 30 days, to file a petition for relief, offer an administrative offer in compromise, or contest the seizure in court. Once seized, merchandise is not automatically returned even if the importer later obtains the missing permit; a genuinely prohibited item is typically destroyed or forfeited outright, while a restricted item with a fixable paperwork gap has a real, though not guaranteed, path to release through that petition process.
