In the 1950s, the International Brotherhood of Teamsters empowered poor immigrants who had grown up in the crowded blocks of the central city to move upward and outward to comfortable suburbs. It delivered unprecedented benefits to workers—especially to those in retail, services, and light manufacturing—locking in hourly pay that bought the patio furniture sets, the pontoon boats, and the station wagons that defined the consumer culture of the decade. Yet suburban comfort came with strict,...