Mexico · United States · Canada · Asia · Global

Executive Summary | Reference Week 13 | Wednesday 25-03-2026

SEMUDMEX – Strategic Customs, Trade & Regulatory Advisory

This week’s bulletin is built around one central idea: the trade system is not slowing down, but it is becoming materially harder to navigate. In North America, the focus is shifting from whether tariffs and treaty rules will change to how quickly companies can adapt their customs, sourcing and documentation models. At the same time, geopolitical shocks and institutional paralysis are increasing the cost of being reactive.

I. Global Trade & Macro Context

Global trade is still expanding, but under a more fragmented rulebook

Source: Source: WTO, UNCTAD, IMF; Reuters reporting on WTO reform, 20-03-2026

Operational Explanation: Global trade in goods and services remains above USD 30 trillion, and the broad institutional view still points to moderate growth rather than contraction. What is changing is not the existence of trade, but the quality of the environment in which it operates. WTO reform talks remain blocked, major economies are leaning more heavily on unilateral and plurilateral tools, and trade policy is increasingly being used to pursue industrial, security and geopolitical objectives. Reuters reported that countries were already considering alternatives outside the WTO framework if reform failed to advance.

SEMUDMEX Practical Risk Assessment: For clients, the practical message is simple: trade volumes may continue growing, but the operating environment is less stable. The competitive advantage now lies in documentation quality, legal adaptability and speed of execution, not just in price.

U.S. tariff refunds are no longer a legal theory; they are becoming an operational process

Source: Source: Reuters, 06-03-2026 and 12-03-2026; CBP court filings

Operational Explanation: CBP has already acknowledged that it is building the infrastructure required to process large-scale tariff refunds after the courts invalidated key tariff measures. Reuters reported that the system was between 40% and 80% complete by 12 March, with a target to launch the refund process around mid-April. The exposure is not marginal: estimates place the total potential refund pool at about USD 166 billion, affecting roughly 330,000 importers. That scale matters because it turns a legal victory into a multi-year customs administration event involving entries, liquidations, protests, refunds and possible disputes over allocation.

SEMUDMEX Practical Risk Assessment: SEMUDMEX view: this is the kind of issue that rewards prepared companies and punishes passive ones. Importers with U.S. exposure should already be mapping historic entries, checking liquidation status, validating broker records and preparing support files for claims. Waiting until the portal opens will be late for many operators.

Washington is rebuilding tariff pressure by other means

Source: Source: Reuters, 13-03-2026; policy reporting on Section 301 probes and temporary tariffs

Operational Explanation: The key mistake this week would be to assume that because one tariff route was curtailed by the courts, tariff risk is fading. Reuters reported that the U.S. opened new unfair-trade probes, including Section 301 investigations on industrial overcapacity and forced labor issues, partly as a way to rebuild pressure after the Supreme Court ruling. At the same time, the temporary 10% tariff framework remains part of the commercial landscape while policymakers discuss whether higher or alternative measures are needed.

SEMUDMEX Practical Risk Assessment: SEMUDMEX view: the structure of the risk has changed, but the risk itself has not. Companies should continue treating tariff exposure as a standing variable in pricing, supplier selection and contract drafting.

The 2026 USMCA review is moving toward a harder line on Chinese content in Mexico

Source: Source: Reuters, 12-03-2026 and 05-03-2026

Operational Explanation: The formal review process of the USMCA began in March, and the political direction is already visible. Reuters reported that U.S. lawmakers and trade officials are pressing for stronger rules to prevent Chinese firms from using Mexico as a manufacturing platform into the U.S. market. The discussion is not limited to abstract rules-of-origin language; it goes directly to how much foreign content is tolerated, how origin is documented, and how manufacturing investment in Mexico will be judged politically as well as commercially.

SEMUDMEX Practical Risk Assessment: SEMUDMEX view: this is one of the most important signals for nearshoring clients. Projects designed around Mexico’s market access to the U.S. must now be stress-tested not only for cost and logistics, but for political acceptability under a stricter interpretation of regional trade rules.

Mexico and Canada are openly defending the trilateral nature of the treaty

Source: Source: Reuters, 12-03-2026; Reuters, 09-03-2026

Operational Explanation: Mexico and Canada have made it clear that they want to preserve the USMCA as a trilateral framework rather than allow it to drift into two bilateral relationships dominated by U.S. leverage. That position matters because it provides a counterweight to pressure from Washington and reflects the view of Mexican businesses as well. Reuters noted that Mexico’s own consultation process showed strong support from domestic industry for keeping the agreement trilateral, especially because about 80% of Mexico’s exports go to the United States and supply-chain certainty remains essential.

SEMUDMEX Practical Risk Assessment: SEMUDMEX view: clients should not assume treaty collapse, but they should assume stricter implementation. The likely outcome is not less regional integration, but more conditional integration.

China’s retaliation threat against Mexico turns tariff policy into a two-front risk

Source: Source: Reuters, 25-03-2026

Operational Explanation: China said it reserves the right to retaliate against Mexico’s tariff increases, arguing that the measures create major trade and investment barriers. Reuters reported that the measures affect more than USD 30 billion in Chinese exports and could cost China’s mechanical and electrical sectors around USD 9.4 billion, with the automotive sector the hardest hit. The importance of this development is that Mexico is not only managing pressure from Washington to reduce Chinese exposure; it is also beginning to face direct diplomatic and commercial pressure from Beijing.

SEMUDMEX Practical Risk Assessment: SEMUDMEX view: companies with Asian sourcing and Mexican assembly footprints need scenario planning now. The risk is no longer theoretical; it is becoming bilateral and could alter sourcing, valuation and customs treatment.

CBP operational changes are quietly becoming a financial control issue

Source: Source: Federal Register / CBP operational notices; Reuters refund-system reporting

Operational Explanation: The transition toward electronic refunds and tighter digital bond controls may sound technical, but they matter precisely because they sit at the intersection of customs, treasury, broker management and internal controls. When refunds move electronically and bond validation becomes stricter, small mismatches in account data, powers of attorney or broker instructions can create real cash and clearance problems.

SEMUDMEX Practical Risk Assessment: SEMUDMEX view: this is not a headline issue, but it is a high-probability issue. Well-run companies should already be auditing ACH setup, refund reconciliation flows and bond sufficiency before it becomes a problem at entry level.

The WTO deadlock is now a commercial signal, not just a diplomatic story

Source: Source: Reuters, 20-03-2026

Operational Explanation: Reuters reported that WTO reform deadlock may push some countries to pursue other trade options outside the multilateral system. That matters because it confirms a structural trend: when the global rulebook stalls, countries move faster through regional deals, unilateral action and issue-specific alliances. For trade operators, that means the world is becoming less uniform and more dependent on which corridor, treaty or jurisdiction a product touches.

SEMUDMEX Practical Risk Assessment: SEMUDMEX view: clients should stop expecting the WTO to be the main stabilizer of trade risk in the short term. Regional frameworks and unilateral trade measures will be more decisive for actual business planning.

Energy and shipping risks remain one external shock away from spreading through trade costs

Source: Source: Reuters reporting on Hormuz, fertilizer and energy markets, 17-03-2026 to 25-03-2026

Operational Explanation: The Strait of Hormuz still carries roughly one-fifth of global oil and LNG flows, and Reuters reporting on March 17 highlighted the effect of the Iran war on fertilizer supplies, prices and food security. These developments matter because they move beyond energy alone: they affect freight, chemicals, packaging, agriculture and any industrial process tied to fuel or gas-based inputs. When energy shocks persist, they become customs and pricing issues as well, because declared values, supplier contracts and landed-cost assumptions all start to move.

SEMUDMEX Practical Risk Assessment: SEMUDMEX view: clients should read energy instability as a customs issue too. Rapid input-price movement raises the risk of valuation inconsistencies, rushed supplier substitutions and margin erosion in import-dependent sectors.