Washington prepares for the fourth major round of USMCA review negotiations as the Trump administration and Mexico push to reshape North American trade rules
AMERICAN NEWSLINE | TRADE & ECONOMY SPECIAL REPORT
Published: September 17, 2026
Updated: September 17, 2026
Next reported talks: September 28–29, 2026
Location: Washington, D.C.
🚨 THE NEXT BIG U.S.–MEXICO TRADE MEETING
The United States and Mexico are preparing for another important round of negotiations over the future of the United States–Mexico–Canada Agreement (USMCA), the North American trade agreement that replaced NAFTA in 2020.
The next bilateral negotiating round is reported to have been rescheduled for September 28–29, 2026, in Washington, D.C., according to reporting published September 16. The round was reportedly moved back by one week from its earlier target dates. The reason for the change has not been officially confirmed by the U.S. government or Mexico.
The talks are part of the first formal joint review of USMCA, which entered into force on July 1, 2020.
Importantly, the U.S. Trade Representative’s Office had already officially announced that American and Mexican negotiating teams would conduct a fourth bilateral round in Washington during September 2026. The exact September 28–29 dates are therefore the latest reported schedule, while readers should watch for formal confirmation of the precise dates from USTR and Mexico’s Secretariat of Economy.
📅 EVENT DETAILS AT A GLANCE
| Event | Details |
|---|---|
| 🇺🇸🇲🇽 Event | Fourth U.S.–Mexico bilateral USMCA negotiating round |
| 📅 Reported dates | September 28–29, 2026 |
| 📍 Location | Washington, D.C. |
| 📜 Agreement under review | United States–Mexico–Canada Agreement (USMCA) |
| 🇺🇸 U.S. lead negotiator | U.S. Trade Representative Jamieson Greer |
| 🇲🇽 Mexican counterpart | Secretary of Economy Marcelo Ebrard |
| 🎯 Major subjects | Autos, steel & aluminum, agriculture, labor, economic security, rules of origin, supply chains and electronic payments |
| 🔄 Round | Fourth bilateral U.S.–Mexico round |
| ⚠️ Date status | Reported/rescheduled; exact dates should be confirmed by official government notices |
| 🇨🇦 Canada | Not part of this bilateral negotiating round |
The U.S. and Mexico have already conducted three rounds of bilateral discussions in 2026. USTR says the fourth round is intended to continue work toward the USMCA joint review.
🏛️ WHY THESE TALKS MATTER
The USMCA is one of the most important economic frameworks for North America.
The agreement governs a huge amount of cross-border commerce involving:
- 🚗 Automobiles and auto parts
- 🏭 Manufacturing
- 🌽 Agriculture
- 🥩 Meat and food products
- ⚙️ Industrial goods
- 🧲 Steel and aluminum
- 💻 Electronics
- 💊 Medical products
- 💳 Electronic payment services
- 🚚 Cross-border supply chains
The upcoming negotiations therefore go considerably beyond traditional tariff discussions.
The central question is increasingly becoming:
What should North American trade rules look like for the next phase of the U.S.–Mexico economic relationship?
WHAT WASHINGTON WANTS TO CHANGE
The Trump administration has identified several areas it wants addressed during the USMCA review.
According to USTR’s previous negotiating statements, U.S. priorities include strengthening rules of origin, reducing reliance on imports from outside North America, improving economic security and ensuring that the benefits of the agreement primarily accrue to the three participating countries.
During earlier rounds, U.S. and Mexican negotiators discussed:
🚗 AUTOMOBILES
Rules determining how much of a vehicle or vehicle component must originate within North America in order to receive preferential treatment.
This is one of the most consequential issues because Mexico is a major automobile manufacturing center for the North American market.
🧲 STEEL & ALUMINUM
The two governments have been discussing trade in steel, aluminum and derivative products.
The issue is particularly important because the U.S. wants greater visibility into where industrial materials originate and how they enter North American supply chains.
📦 RULES OF ORIGIN
Rules of origin determine where a product is considered to have been made for trade purposes.
Washington has emphasized tighter regional sourcing requirements and reducing opportunities for goods from outside North America to receive USMCA benefits.
CHINA HAS BECOME AN IMPORTANT PART OF THE DISCUSSION
One of the most significant new dimensions of the negotiations is China’s role in North American supply chains.
Recent reporting says Washington is pressing Mexico to tighten rules that would prevent Chinese companies from using Mexico as a route into the U.S. market.
The Wall Street Journal reported September 16 that the U.S. is seeking stricter sourcing requirements for AI hardware, including chips and servers, as well as tighter rules affecting consumer and medical electronics.
That development is significant because Mexico has become an increasingly important manufacturing location for technology products entering the U.S.
The emerging issue:
Made in Mexico — but where did the components actually come from?
That question could become increasingly important during the USMCA review.
🤖 AI HARDWARE ENTERS THE TRADE NEGOTIATIONS
The negotiations are no longer limited to traditional products such as cars, steel and agricultural goods.
Artificial-intelligence infrastructure is becoming part of the conversation.
According to current reporting, Washington wants stronger rules concerning the North American origin of AI-related hardware, potentially including:
- Semiconductor components
- AI servers
- Computing equipment
- Electronic components
- Other advanced technology products
The objective reported by the WSJ is to limit the possibility that products containing significant Chinese components could receive favorable treatment under North American trade rules.
For U.S. consumers and businesses, the issue could eventually influence technology supply chains and production costs.
🌽 AGRICULTURE WILL ALSO BE ON THE TABLE
Agriculture has already been part of the USMCA review.
During the second round of negotiations in Washington in June, U.S. and Mexican officials began discussions concerning agriculture, labor and environmental issues.
The two sides also discussed steel, aluminum and automobiles.
Agricultural trade is especially important because Mexico is a major market for U.S. agricultural exports.
American farmers and ranchers therefore have a direct interest in the outcome of the negotiations.
⚙️ ECONOMIC SECURITY & NORTH AMERICAN SUPPLY CHAINS
Another major theme is economic security.
USTR and Mexico’s Economy Ministry have repeatedly emphasized strengthening North American manufacturing and supply chains.
At the conclusion of the July round, USTR Ambassador Jamieson Greer and Mexican Economy Secretary Marcelo Ebrard said their teams wanted to strengthen North American manufacturing, supply chains and address what they described as “free-riding” by non-parties.
In practical terms, that means Washington and Mexico are looking at ways to make North American production more interconnected while reducing vulnerabilities associated with outside suppliers.
MEXICO’S POSITION
Mexico has approached the negotiations with an emphasis on preserving the country’s access to the U.S. market while protecting its manufacturing and investment interests.
Recent Reuters reporting says Washington and Mexico are accelerating negotiations with the goal of reaching a bilateral arrangement before the November 3, 2026 U.S. midterm elections. Reuters reported that Mexico is seeking greater certainty for investors and relief from some tariffs, while U.S. negotiators are pushing for stronger North American content requirements and measures addressing Chinese investment.
The negotiations therefore involve both economic and strategic considerations.
🚘 WHY AMERICAN CAR BUYERS SHOULD WATCH THIS
The automobile industry is one of the biggest reasons these talks matter.
Mexico is deeply integrated into the U.S. automobile supply chain.
A vehicle assembled in Mexico can contain components manufactured across multiple North American locations before reaching an American dealership.
Changes to:
Rules of origin → Tariff eligibility → Manufacturing costs → Supply chains → Vehicle prices
could therefore have consequences for automakers, suppliers and consumers.
The U.S. and Mexico have already identified automobile rules as a central negotiating subject.
🏭 WHAT COULD HAPPEN TO AMERICAN MANUFACTURERS?
The Trump administration says strengthening North American sourcing can benefit American manufacturers and workers.
USTR has specifically identified manufacturers, farmers, ranchers, workers, service suppliers and businesses of all sizes among the groups whose interests it says should be addressed in the review.
However, businesses can also face higher costs if new regional sourcing requirements make it more expensive to obtain components.
That is why the details of any eventual agreement matter more than the headline announcement.
📊 THE NEGOTIATIONS SO FAR
ROUND 1 — MAY 28–29
📍 Mexico City
The first bilateral round focused on:
- Economic security
- Rules of origin
- Key industrial goods
- Automotive issues
- Steel and aluminum
USTR said the discussions were intended to strengthen American supply chains and address the U.S. trade deficit with Mexico.
ROUND 2 — JUNE 15–17
📍 Washington, D.C.
Negotiators advanced discussions involving:
- Industrial rules of origin
- Economic security
- Agriculture
- Labor
- Environment
- Steel and aluminum
- Automobiles
The two sides also agreed to support a committee examining implementation of USMCA Chapter 12, which covers sectoral annexes and regulatory compatibility.
ROUND 3 — JULY 21–23
📍 Mexico City
The third round addressed:
- Steel
- Aluminum
- Automobiles
- Economic security
- Labor
- Agriculture
- Electronic payment services
USTR said the talks produced progress on several issues while directing teams to continue negotiations in Washington during September.
📅 ROUND 4 — SEPTEMBER 28–29
📍 Washington, D.C.
WHAT IS EXPECTED?
The fourth round is expected to build on the three previous rounds rather than start negotiations from scratch.
Issues likely to remain important include:
🚗 Automotive rules
🧲 Steel & aluminum
📦 Rules of origin
🌽 Agriculture
👷 Labor
🔐 Economic security
💻 Technology and AI hardware
💳 Electronic payments
🏭 North American supply chains
🇨🇳 Chinese investment and sourcing
The precise daily agenda has not been publicly released as of September 17.
Therefore, American Newsline should avoid publishing a detailed hour-by-hour itinerary unless USTR or Mexico’s Economy Ministry releases one.
⏰ SEPTEMBER 28–29: WHAT READERS SHOULD EXPECT
📍 DAY 1 — SEPTEMBER 28
Expected focus:
Negotiating teams are likely to review outstanding technical issues from the previous rounds and continue discussions on the USMCA provisions under review.
Likely subjects include rules of origin, manufacturing, autos, economic security and supply chains.
No official public timetable has yet been released.
📍 DAY 2 — SEPTEMBER 29
The second day is expected to continue technical negotiations and potentially address unresolved areas.
Any major announcement would likely depend on whether negotiators make sufficient progress.
Again, there is currently no officially published hour-by-hour schedule.
⚠️ IMPORTANT: THIS IS NOT YET A FINAL TRADE DEAL
Readers should understand the difference between:
NEGOTIATIONS
Officials discuss possible changes.
AGREEMENT
Officials reach a political understanding.
SIGNED TEXT
The governments formally approve legal language.
IMPLEMENTATION
The agreed rules actually take effect.
The September 28–29 meetings are negotiations, not a guaranteed deadline for a completed replacement or amendment to USMCA.
WHAT COULD THIS MEAN FOR AMERICANS?
The eventual outcome could matter to Americans through several channels.
🛒 CONSUMERS
Trade rules can influence the cost of imported goods and products containing imported components.
🚗 AUTOMOBILES
Changes to vehicle sourcing requirements could affect manufacturers, suppliers and potentially vehicle costs.
👷 WORKERS
Changes in where companies source components can affect manufacturing employment and investment.
🌽 FARMERS
Mexico is an important market for American agricultural products.
🏭 BUSINESSES
Companies operating across the U.S.–Mexico border may have to adjust supply chains if rules change.
💻 TECHNOLOGY
New rules concerning AI hardware and electronic components could influence technology manufacturing in North America.
WHY THE CHINA QUESTION COULD MAKE THIS ROUND DIFFERENT
The latest negotiations are taking place against a wider restructuring of global supply chains.
Washington is increasingly concerned about the possibility that Chinese companies could use Mexico as a manufacturing or assembly base to access the U.S. market under North American trade preferences.
Recent reporting indicates that the United States is seeking stronger origin requirements specifically affecting advanced technology and AI-related hardware.
Mexico, meanwhile, has its own interest in attracting investment and maintaining competitiveness.
This makes the China issue one of the potentially most consequential subjects to watch during the September negotiations.
🔴 AMERICAN NEWSLINE’S SEPTEMBER 28–29 WATCHLIST
🚗 AUTOMOBILES
Will Washington and Mexico agree on tougher North American content requirements?
🇨🇳 CHINA
Will the talks produce stronger rules limiting Chinese components or investment?
🧲 STEEL & ALUMINUM
Will the two governments make progress on industrial-metal trade?
🌽 AGRICULTURE
Will agricultural market-access issues move closer to resolution?
🤖 AI HARDWARE
Will advanced chips, servers and other AI equipment receive special rules?
🏭 MANUFACTURING
Could new rules encourage more production inside North America?
💵 TARIFFS
Will negotiators address existing tariff pressures affecting Mexican goods?
📜 USMCA FUTURE
Will the two sides move closer to a framework for the agreement’s future?
🗓️ WHAT HAPPENS AFTER SEPTEMBER 29?
The September meetings are not necessarily the end of the process.
The USMCA joint review mechanism requires the three countries to examine the agreement and determine whether they want to extend it.
The agreement entered into force on July 1, 2020, and its review mechanism is designed to require periodic reconsideration.
The September negotiations are therefore part of a much larger process concerning the future of North American trade.
THE BIG PICTURE
The September 28–29 talks arrive at a critical point for the U.S.–Mexico economic relationship.
For Washington, the negotiations are about supply chains, trade balances, manufacturing, rules of origin and economic security.
For Mexico, they are about maintaining reliable access to the U.S. market while protecting the country’s role as a major manufacturing and investment destination.
For American businesses and consumers, the ultimate question is much simpler:
Will the next version of North American trade make it easier — or more complicated — to manufacture, sell and buy products across the United States and Mexico?
The answer will not necessarily emerge from one two-day meeting. The September 28–29 negotiations are another step in a longer review process.
🚨 AMERICAN NEWSLINE LIVE UPDATE
🇺🇸🇲🇽 U.S.–MEXICO TRADE TALKS
NEXT REPORTED DATES: September 28–29, 2026
LOCATION: Washington, D.C.
PROCESS: Fourth bilateral negotiating round connected to the USMCA joint review
LEAD U.S. OFFICIAL: U.S. Trade Representative Jamieson Greer
MEXICAN COUNTERPART: Economy Secretary Marcelo Ebrard
MAIN ISSUES: Autos • Rules of origin • Steel & aluminum • Agriculture • Labor • Economic security • AI hardware • Supply chains • Electronic payments
CURRENT STATUS: Negotiations planned for September; September 28–29 dates have been reported as the rescheduled dates, while the precise dates should be confirmed through official USTR/Mexican government announcements.
LAST UPDATED: SEPTEMBER 17, 2026
American Newsline will update this report when the U.S. Trade Representative, Mexico’s Secretariat of Economy or another authoritative source releases a confirmed agenda, participant list, negotiating schedule or post-meeting statement.
📰 EDITOR’S NOTE
This article distinguishes between officially announced information and developments reported by media outlets. The U.S. Trade Representative officially confirmed that a fourth U.S.–Mexico bilateral negotiating round would take place in Washington, D.C., during September 2026. Current reporting identifies September 28–29 as the rescheduled dates. The governments had not, as of September 17, publicly released a detailed hour-by-hour agenda. Trade negotiations can change quickly, and no final agreement should be assumed before official announcements.