U.S. federal prosecutors in New York plan to seek the extradition of Mexico's most wanted man, drug cartel kingpin Joaquin "Shorty" Guzman, to the United States, the U.S. Attorney's office said on Sunday. Guzman, captured on Saturday in Mexico with help from U.S. agencies, had long run Mexico's infamous Sinaloa Cartel. Robert Nardoza, a spokesman for the U.S. Attorney's office in Brooklyn, said his office plans to seek Guzman's extradition to face a variety of charges.