How a stretch of Interstate 20 in the Deep South tells the story of American unions

A 25-mile stretch of Interstate 20 between Tuscaloosa and Birmingham, Alabama, encapsulates the struggles and transformations of American labor unions. Here, over 5,000 workers at a Mercedes-Benz plant are on the brink of a union vote, representing a significant shift in a region historically resistant to unions. This area, marked by anti-union sentiments, has seen stagnant wages and challenging working conditions, prompting a newfound momentum for unionization among workers.