Union membership in the U.S. has been declining for decades. But, in 2022, support for unions among Americans was the highest it's been in decades. This dissonance is due, in part, to the difficulties of one important phase in the life cycle of a union: setting up a union in the first place. One place where that has been particularly clear is at the Volkswagen plant in Chattanooga, Tennessee.Back in 2008, Volkswagen announced that they would be setting up production in the United States after a 20-year absence. They planned to build a new auto manufacturing plant in Chattanooga. Volkswagen has plants all over the world, all of which have some kind of worker representation, and the company said that it wanted that for Chattanooga too. So, the United Auto Workers, the union that traditionally represents auto workers, thought they would be able to successfully unionize this plant. They were wrong.In this episode, we tell the story of the UAW's 10-year fight to unionize the Chattanooga plant. And, what other unions can learn from how badly that fight went for labor. This episode was hosted by Amanda Aronczyk and Nick Fountain. It was produced by Willa Rubin. It was engineered by Josephine Nyounai, fact-checked by Sierra Juarez, and edited by Keith Romer. Alex Goldmark is our executive producer.Help support Planet Money and get bonus episodes by subscribing to Planet Money+ in Apple Podcasts or at plus.npr.org/planetmoney.