U.S. and Mexico Restart USMCA Negotiations as Trump Simultaneously Imposes New Tariffs on Canada
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U.S. and Mexican negotiators opened a third round of USMCA revision talks in Mexico City on July 21, with Canada shut out; the same day, Trump slapped new tariffs on roughly $20 billion in Canadian goods, splitting the three-way trade framework into a two-plus-one dynamic.
What triggered this round of talks?
On July 1 the Trump administration refused to extend the six-year-old USMCA, starting a countdown: if the three countries cannot agree on revisions, the deal expires within ten years.
This means → these are not routine reviews but emergency negotiations under a "fix it or lose it" deadline.
USMCA underpins roughly $1.6 trillion in annual North American trade. Industry groups have urged Trump to preserve the trilateral framework and its near-zero-tariff market access.
What are the U.S. and Mexico negotiating?
The three-day session covers technical details on autos, steel, aluminum, agriculture, and labor.
Mexico's top priority is winning exemptions from the 25% tariff Trump imposed on Mexican autos and the 50% tariff on its steel and aluminum.
In May the U.S. proposed that 50% of a North American vehicle's value must originate in the United States. In plain terms = current rules set no such high "American content" bar, and meeting it would force major restructuring of the region's deeply integrated supply chains.
Who does the "economic security" agenda target?
The U.S. Trade Representative's office wants higher regional trade barriers, aimed squarely at preventing China and other Asian countries from routing goods through Mexico and Canada into the U.S. market.
The data is already on the table: Chinese-brand car sales in Mexico rose 30% year-on-year in the first half of 2026, pushing market share from 14% to 17% — even after a 50% tariff took effect in January.
This means → Washington wants its North American partners to erect similar barriers on non-regional goods — vehicles, parts, steel, aluminum — effectively asking them to align trade policy with the U.S.
Why is Canada shut out?
On the same day, Trump announced new tariffs on roughly $20 billion in Canadian goods, citing Ottawa's retaliatory tariffs on U.S. autos, steel, aluminum, and spirits, plus Canada's high dairy tariffs.
U.S. Trade Representative Jamieson Greer said Canada has made almost no progress on concessions.
Put simply = Canada chose a "tariff-for-tariff" confrontation path; Mexico chose not to retaliate and to engage cooperatively. Washington is rewarding cooperation and punishing resistance with differential treatment.
What is Mexico's strategy?
Mexico's new ambassador to the U.S., Roberto Lazzeri, said Mexico expects a new deal within the year, adding: "Every moment we delay, we lose competitiveness, market share, and investment."
Mexico has proactively aligned with the U.S. on multiple fronts: export controls, intellectual-property protection, and restricting avocado exports from illegally deforested land.
This reflects Mexico's calculation — rather than going head-to-head on tariffs, trade cooperation for exemption space.
Can the trilateral framework be restored?
Canadian Prime Minister Mark Carney issued a statement saying Ottawa has proposed a comprehensive solution and that Trump's earlier tariffs violated USMCA.
But the reality: the U.S. and Mexico are already advancing substantive talks on a bilateral track, while Canada sits outside the room and under fresh tariff pressure.
This means → the negotiating paths between the U.S.-Mexico pair and Canada have diverged. Whether they can converge again into a trilateral framework is the key variable for USMCA's survival.
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