An alleged Mexican kingpin the White House called “one of the most evil cartel leaders in the world,” who is charged with killing a Drug Enforcement Administration agent in 1985, was among dozens of suspects extradited to the U.

MEXICO CITY — Mexico extradited 29 alleged drug traffickers to the United States on Thursday, including Rafael Caro Quintero, a prized target long sought in the killing of a U.S. narcotics agent, and two leaders of the hyper-violent Zetas cartel,