Exclusive: Mexican cartel reveals ease of smuggling guns from US

As Mexico deals with record murder rate, our exclusive investigation shows most firearms are being smuggled from the US.

Mexico is dealing with its highest murder rate on record, and the majority of firearms are being smuggled in from the US.

The issue has become an increasingly hot topic after a number of US citizens were murdered recently in the country.

In the first of a two-part investigation into arms trafficking between the US and Mexico, Al Jazeera’s John Holman talks to those gun-running and the hitmen using them.