US trade office nears decision on Mexico's manufacturing capacity as exports hit a record
A ruling under a Section 301 investigation could bring new tariffs as August talks with Washington approach, even as Mexico's exports reached $389.7 billion, a record.
BackgroundSection 301 is a US trade law tool that lets Washington investigate practices it considers unfair and impose tariffs outside the normal dispute process, separate from the annual US-Mexico-Canada trade agreement review.
Our viewA pending 301 ruling on Mexico's manufacturing capacity could add tariffs on top of existing measures even as exports set a record. The first half's $389.7 billion is close to sixty percent of all of 2025's $665 billion in goods exports, so volume is not what Washington is targeting, the composition and origin of that capacity is. Exporters gain little from record shipments if the review focuses on how components enter Mexican supply chains rather than how much crosses the border.
What we’re watchingNew tariffs or a negotiated carve-out are more likely than inaction once the August talks conclude. That expectation would be wrong if US trade office delays the ruling past the talks or folds the issue into the broader annual review of the US-Mexico-Canada Agreement instead of acting on its own.



