Auto workers have expanded their strike against major carmakers, walking out of 38 General Motors and Stellantis parts-distribution centers in 20 states. In announcing the strike’s expansion Friday, United Auto Workers President Shawn Fain said Ford was spared additional strikes because the company has met some of the union’s demands during negotiations over the past week. The union is pointing to the companies’ huge recent profits as it seeks wage increases of 36% over four years. The companies have offered a little over half that amount. President Joe Biden says he will go to Michigan on Tuesday to support the union.