MEXICO CITY/WASHINGTON -- The Biden administration has asked Mexico to probe alleged worker rights violations at a Mexican auto-parts plant owned by Italian-French carmaker Stellantis, the fourth such investigation under a revised trade deal.
The U.S. request for Mexico to look into possible rights abuses at Teksid Hierro de Mexico in the northern border state of Coahuila comes under the 2020 United States-Mexico-Canada Agreement (USMCA) that aims to improve conditions at Mexican workplaces.
Companies have been closely watching these early cases to see how tougher labor rules play out under the trade pact that replaced NAFTA. Under the USMCA, factories that violate worker rights could lose their tariff-free status on exports.
Stellantis, the world's fourth-largest auto group, did not immediately respond to a request for comment. It has previously said it respects collective-bargaining rights.
Since 2014, Teksid -- which employs nearly 1,500 people…