Editor's note: Journalist Karl Penhaul spent several weeks tracking the gangs of the Mexican underworld, the corrupt officials who support them and the cops trying to halt the violence.

abused and extorted by Mexican gangs just yards from the United States in a growing racket that may be worth up to $250 million a year. Arriving in ragtag border towns like Reynosa, Mexico's ...

also known as the New Mexican Mafia, a US prison gang. He was in and out of the Arizona Department of Corrections, Rehabilitation and Reentry for 20 years and served time for armed robbery and ...

By Drazen Jorgic, Laura Gottesdiener and Lizbeth Diaz MEXICO CITY (Reuters) - Mexico on Thursday handed over major figures in the country's criminal underworld to U.S. authorities, part of a surprise ...