US Unions Can Wield New Weapon as Europe Targets Labor Violators

A wave of European supply chain laws aimed at cracking down on labor violators is poised to help US unions grow their ranks.

A first-of-its-kind German law—the first of more than two dozen set to take effect across Europe—will soon give US labor groups a slate of more favorable venues to challenge elections. The policies have already piqued the interest of the Biden administration, which pressured the German government to investigate complaints against Mercedes at the urging of the United Auto Workers.

In the first test, Germany is said to be investigating complaints that Mercedes Benz Group AG illegally ...