MEXICO CITY — For decades, Manlio Fabio Beltrones has presided over Mexican politics with an assured hand, wielding enormous power, amassing a personal fortune and skating past scandals that might have dragged down a less capable operator.
But a sweeping corruption case is threatening his legal and political future — as well as the prospects of his Institutional Revolutionary Party, which governs the nation under President Enrique Peña Nieto.
The case involves the illegal siphoning of millions of dollars in public money to fund his party’s political campaigns in 2016. Cooperating witnesses contend that Mr. Beltrones, the party’s president at the time, designed and spearheaded the plan, according to documents and testimony reviewed by The New York Times.
The investigation, which has been brought by prosecutors in the state of Chihuahua, has already ensnared one of his top lieutenants. Dozens of others have been arrested or flipped by prosecutors in the state.