Customs Brokerage for Manufacturers Nearshoring to Mexico

USMCA qualification. Rules of origin documentation. Country-of-origin compliance. The customs broker that keeps your nearshoring strategy from becoming a liability.

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USMCA rules of origin are genuinely complex.

Claiming preferential treatment under USMCA requires product-specific rules of origin documentation. Get it wrong and you owe the full MFN duty rate — plus penalties for false preferential claims.

The 2026 USMCA review adds real uncertainty.

The first formal review of the United States-Mexico-Canada Agreement begins July 1, 2026. The agreement governs nearly $2 trillion in annual trade. Changes to automotive rules of origin, regional value content thresholds, and labor value content requirements are all on the table.

CBP is targeting country-of-origin misrepresentation.

Companies that moved production to Mexico to avoid Section 301 duties on Chinese goods face heightened scrutiny. CBP is actively investigating transshipment and substantial transformation claims. Documentation gaps that used to be routine now carry real legal exposure.

Tariff stacking pushes effective rates past 40%.

Section 301, Section 232, Section 122, and AD/CVD duties can stack on the same shipment. If you're not auditing every layer, you're almost certainly overpaying — or under-declaring and exposing yourself to penalties.

What We Handle for Nearshoring Manufacturers

USMCA Preferential Treatment Claims

We prepare and file USMCA claims with proper rules of origin documentation, ensuring your products qualify for preferential duty rates.

Rules of Origin Documentation

Product-specific origin determination, regional value content calculations, and tariff shift analysis — documented and audit-ready.

Country-of-Origin Compliance

We verify substantial transformation claims and ensure your origin documentation withstands CBP scrutiny — especially for goods with Chinese-origin components.

Section 301 Risk Assessment

We identify which of your products face Section 301 exposure and evaluate whether your nearshoring structure actually eliminates the duty liability.

Tariff Engineering

Expert-led HTS classification and duty analysis to identify legal opportunities to reduce your effective tariff rate across your product portfolio.

Customs Audit Preparation

We ensure your entry records, valuation documentation, and origin certificates are organized and defensible before CBP comes knocking.

Frequently Asked Questions

Do I need a specialized customs broker for nearshoring?

If you're manufacturing in or sourcing from Mexico, you need a broker who understands USMCA preferential treatment claims, rules of origin requirements, and country-of-origin compliance. Most generalist brokers file entries but don't verify whether your USMCA claims will survive a CBP audit.

What are USMCA rules of origin?

USMCA rules of origin determine whether a product qualifies for preferential duty rates when imported from Mexico or Canada. Each product has specific requirements — tariff shift rules, regional value content thresholds, or both. False or unsupported preferential claims carry penalties and retroactive duty assessments.

Can I avoid China tariffs by manufacturing in Mexico?

Potentially, but only if your products meet USMCA substantial transformation requirements. Simply assembling Chinese components in Mexico does not eliminate Section 301 liability. CBP is actively investigating transshipment schemes and weak transformation claims. Your origin documentation must be defensible.

How does the 2026 USMCA review affect my imports?

The first formal review begins July 1, 2026. Automotive rules of origin, labor value content requirements, and regional value content thresholds could all change. Importers should audit their current USMCA claims and prepare for potential adjustments to qualification criteria.

How much does customs brokerage cost for Mexico imports?

Greenwich Mercantile charges a flat $100 per filing — any product, any origin, any complexity. There are no surcharges for USMCA claims, rules of origin documentation, or multi-layered tariff analysis.

How quickly can I switch customs brokers?

Book a 30-minute consultation and we handle the rest. We review your product lines, origin structures, and current USMCA claims. Most manufacturers are fully onboarded within an hour.

Don't Let Your Nearshoring Strategy Create New Compliance Risk.

Book a free 30-minute consultation. We'll review your USMCA exposure and identify where your origin documentation needs work.

Book a Free Consultation