US Launches Section 301 Tariff Investigations Into Mexico Manufacturing Amid USMCA Review Talks

Welcome to Mexico Tariff News and Tracker, your essential update on the tariffs shaping US-Mexico trade. As of late March 2026, the US Trade Representative has launched sweeping Section 301 investigations into structural excess capacity in manufacturing, explicitly naming Mexico alongside China, the EU, and others like Vietnam and India, according to the USTR fact sheet released this week. These probes target unfair practices like subsidies and state-owned enterprises that flood markets and hinder American reindustrialization, with public hearings set to begin May 5. Mexico faces heightened scrutiny amid the ongoing 2026 USMCA joint review. Economy Secretary Marcelo Ebrard reports progress in bilateral talks, where the US flagged 54 concerns and Mexico raised 12, pushing to eliminate tariffs on steel and autos, as noted by Opportimes. USMCA-compliant goods from Mexico currently enjoy zero tariffs, per the Trump Tariff Calculator, a sharp drop from the 25% non-compliant rates that peaked earlier under IEEPA authorities. That changed dramatically on February 20, when the US Supreme Court ruled those IEEPA tariffs on Mexico, China, and Canada unlawful, slashing overall US import duties to their lowest since Liberation Day, according to National Bank of Canada analysis. Yet uncertainty lingers: Section 122 tariffs now impose a 10% ad valorem rate on covered imports, with the Trump Administration signaling plans to hike it to 15% and pursue new probes under other laws. The Asset warns that President Trump's erratic tariffs continue destabilizing global trade, though USMCA exemptions have shielded compliant Mexican exports. Meanwhile, Mexico's peso slides amid domestic woes like a surprise rate cut and oil spills, per Mexico News Daily's week in review. House Republicans, via Majority Leader updates, prioritize border funding but tie it to broader homeland security, indirectly pressuring Mexico on migration and trade. Stay vigilant, listeners—these developments could reshape supply chains and prices. Thanks for tuning in to Mexico Tariff News and Tracker—subscribe now for weekly insights. This has been a Quiet Please production, for more check out quietplease.ai. For more check out https://www.quietperiodplease.com/ Avoid ths tariff fee's and check out these deals https://amzn.to/4iaM94Q This content was created in partnership and with the help of Artificial Intelligence AI.