Mexico is approaching a decade without the announcement of a new light vehicle automotive plant, and the recent decision by the United States not to renew the USMCA in its current form threatens to extend this period further. Washington's refusal, communicated by the Office of the United States Trade Representative (USTR), opens the door to a scheme of annual reviews of the agreement until 2036, reintroducing uncertainty regarding the operating rules for long-term investments in the sector.