Gerald McEntee had Michigan on his mind in June when he delivered his final address as president of the nation’s largest public employee union. “Our sisters and brothers in Michigan are on the front lines in the next critical battle,” McEntee told the American Federation of State, County and Municipal Employees. He declared that the imperative was “defeating Governor Rick Snyder's anti-worker and anti-American emergency manager’s bill. These managers are local dictators who rip up union contracts.” Focusing on an emergency manager bill in one state might seem an unlikely valedictory for a legendary labor leader who has served his...