Prosecutors allege Joaquin Guzman Lopez and his brother ran a faction of the cartel that has been identified as a main exporter of fentanyl to the U.S.

Federal prosecutors in the US will not seek the death sentence for Joaquin Guzman Lopez if he is found guilty in court.

Joaquín Guzmán López is expected to plead guilty to charges against him in exchange for a lighter sentence that does not ...