March 4 (UPI) -- Vermont Sen. Bernie Sanders joined a rally for organized labor at a Nissan auto plant in Mississippi on Saturday, calling on the Japanese automaker to drop its opposition to workers unionizing.
Sanders joined other liberal groups, including the Sierra Club and the NAACP, in signing a letter to Nissan, challenging the company to allow workers the right to freely decide whether to join the United Auto Workers, and to improve workplace safety at its plant in Canton, Miss.