The mass extradition included aging gang leaders such as Caro Quintero, the 72-year-old co-founder of the Guadalajara Cartel, who reigned over Mexico's criminal underworld decades ago, as well as younger leaders engaged in moving large quantities of deadly fentanyl into the U.S. more recently.

Mexican officials are trying to head off the Trump administration's threat of imposing 25% tariffs on all Mexican imports.