# Supply chain due diligence and forced labor laws
In 2022, U.S. Customs seized a shipment of Uniqlo men's shirts at the border. The reason: the importer could not prove the cotton was free of forced labor from China's Xinjiang region. The goods sat, the sale was lost, and the paperwork gap, not the product itself, was the problem.
That is the new reality. Regulators no longer ask "is your product safe?" They ask "can you prove where every fiber came from, and who touched it?" This lesson covers the two laws driving that shift and the evidence you need to keep goods moving.
Roughly one in five cotton garments sold globally has some link to Xinjiang, according to widely cited industry estimates (exact figures are hard to verify because supply chains are opaque). Xinjiang produces a large share of the world's cotton, and credible reports document state-imposed forced labor tied to the Uyghur ethnic minority there.
That created a compliance problem for nearly every apparel brand: cotton is cheap, fungible, and gets blended and re-spun across many countries. A T-shirt sold in Berlin may contain fiber picked in Xinjiang, spun in Vietnam, and sewn in Bangladesh. Tracing it back is genuinely hard, and the law now requires you to do exactly that.
The UFLPA is a U.S. federal law that took effect in June 2022. It is enforced by CBP (U.S. Customs and Border Protection).
The core mechanism is a rebuttable presumption: any goods made wholly or in part in Xinjiang, or by entities on a government watchlist, are *assumed* to be made with forced labor and are banned from entering the United States. "Rebuttable" means you can challenge the assumption, but the burden of proof is on you, the importer, not the government.
CBP issues a Withhold Release Order (WRO) or acts under UFLPA authority to detain a shipment at the port. Your goods are physically held. To release them you must submit documentary evidence, and the standard is high: "clear and convincing" proof that no forced labor was involved.
CBP has published enforcement data showing thousands of shipments reviewed and billions of dollars in goods stopped since 2022, with apparel, textiles, and cotton among the most-flagged categories. You can review CBP's official guidance and the operational strategy in the UFLPA resources on CBP.gov.
To rebut the presumption you typically need a full traceability package:
That last point matters. Brands increasingly use forensic testing. A lab can analyze the isotopic signature (the chemical fingerprint left by soil, water, and climate) of a cotton sample and match it to a growing region. This is science, not paperwork, and CBP takes it seriously.
Germany's Lieferkettensorgfaltspflichtengesetz (mercifully abbreviated LkSG), the Supply Chain Due Diligence Act, took effect in January 2023.
The philosophy is different from UFLPA. UFLPA is a border enforcement tool: prove it or your goods stay out. LkSG is a due diligence obligation: it requires companies to actively manage human rights and environmental risks across their supply chain, whether or not a shipment is ever stopped.
As of 2024, the LkSG applies to companies with operations in Germany employing 1,000 or more people. That threshold sweeps in most large fashion retailers and brands that sell in the German market.
Covered companies must:
Enforcement sits with BAFA (the Federal Office for Economic Affairs and Export Control). BAFA can impose fines up to 2% of annual global turnover for larger firms, and non-compliant companies can be excluded from public contracts for up to three years.
Watch the horizon. The CSDDD (Corporate Sustainability Due Diligence Directive), adopted by the EU in 2024, extends LkSG-style obligations across all member states. It is being transposed into national law through the mid-2020s, so a brand selling across Europe will face one broad regime rather than 27 separate ones. The German model is essentially the template.
The practical work is traceability: documenting each tier of your supply chain so you can produce evidence on demand.
Fashion supply chains are described in tiers, counting backward from the shipped product:
Most brands historically knew only Tier 1. UFLPA and LkSG force you down to Tier 4, because that is where the cotton risk lives. This is the single biggest operational change.
Here is the kind of structured record a modern compliance team keeps for each style, so it can be pulled instantly if CBP detains a shipment:
style_id: SS26-WOV-014
product: cotton poplin shirt
tier1_factory: Dhaka Apparel Ltd (Bangladesh) - CMT
tier2_mill: Nam Dinh Textile (Vietnam) - weaving + dye
tier3_spinner: Coimbatore Spinning (India)
tier4_origin: cotton, India - certified BCI
origin_evidence: isotopic_test_ref BATCH-9921
docs: [PO, invoice, bill_of_lading, test_report]
verified: 2026-01-14Note "certified BCI." The Better Cotton Initiative is a widely used sustainability standard. Useful, but be careful: certification alone is often *not* sufficient for CBP, because certified cotton can be mixed with non-certified cotton downstream. You still need the origin evidence.
Vérification des acquis
1. What does the term 'rebuttable presumption' under the UFLPA mean for an importer?
2. Why does cotton pose an unusually difficult supply chain due diligence challenge compared to a discrete manufactured component?
3. The lesson states regulators have shifted from asking 'is your product safe?' to 'can you prove where every fiber came from?' What underlying compliance principle does this shift illustrate?
4. Select ALL correct answers about the Uniqlo shirt seizure and what it illustrates.
Sélectionnez toutes les réponses correctes.
5. Select ALL correct answers describing how the UFLPA operates and is enforced.
Sélectionnez toutes les réponses correctes.
These laws reshape day-to-day sourcing decisions.
Supplier selection. You cannot simply pick the cheapest mill. You must vet its inputs, which means favoring suppliers who can document their own upstream sources. Opaque suppliers become a liability.
Longer lead times. Onboarding a new supplier now includes a traceability audit. Adding forensic testing to a cotton program adds cost and time before the first order ships.
Contract terms. Brands now write traceability obligations directly into supplier contracts: the right to audit, the duty to disclose sub-suppliers, and termination rights if forced labor is found.
No plausible deniability. Both laws reject the old excuse of "we didn't know." UFLPA presumes the worst; LkSG requires you to go look. Ignorance is now evidence of negligence, not a defense.
Consider a brand importing 100,000 cotton shirts to the U.S. If CBP detains the shipment under UFLPA and the brand cannot rebut, the goods are excluded and can be destroyed or re-exported. Beyond the lost product value, the brand faces demurrage (port storage fees while goods sit), legal costs assembling the rebuttal package, and missed selling season. Industry practitioners often cite that a detained shipment can be a total loss on the affected units. The lesson: the cost of upfront traceability is small next to the cost of one seizure.