This is the best summary I could come up with:

The most ambitious U.S. industrial labor action in decades has halted production at three plants producing the Ford Bronco, Jeep Wrangler and Chevrolet Colorado, along with other popular models.

At a rally on Friday afternoon and at picket lines during the day, union members protested loudly and took special aim at a two-tiered wage system that left new hires without the pay or benefits of seasoned hands.

The union is demanding a bigger share of profits, shorter work weeks, restoration of defined benefit pensions and stronger job security as automakers shift to electric vehicles.

None of the Detroit Three has proposed eliminating those tiered wage systems, a key UAW demand, but they have offered to cut the time needed to reach top pay to four from eight years.

Biden on Friday said acting Labor Secretary Julie Su and adviser Gene Sperling will travel to Detroit to offer support for talks but the White House said they would not mediate.

Nearly half the 12,700 striking workers are at the Stellantis plant, although management has been preparing: a parking lot of finished Jeeps is more than a mile long outside the factory.

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