NAFTA renegotiation becomes USMCA (2017–2018)
President Trump called NAFTA the worst trade deal ever and threatened to withdraw. After 13 months of tense talks, the US, Mexico, and Canada agreed on a replacement. The new deal raised auto content rules and added a sunset clause that created the very review now underway.
The three countries signed the USMCA in late 2018; it took effect July 1, 2020.
The sunset clause built into that deal is what forces the 2026 review and the 16-year extension decision.
The current review runs on rules written in 2018. The same auto-content fight that dominated then is back at the center now.
