"The three countries are expected to implement the labor mobility provisions of the USMCA consistent with existing practices under NAFTA. Until the new agreement takes effect, the NAFTA mobility provisions are expected to remain in place without interruption. Each country maintains the authority to interpret the provisions of the USMCA, and country-specific policies and application procedures cannot be ruled out."
https://legalservicesincorporated.com/new-usmca-and-its-impa...