A powerful Mexican drug cartel leader has made his second appearance in federal court in Texas after being taken into U.S. custody last week.

Mexico's president has taken the unusual step of issuing a public appeal to drug cartels not to fight each other, following last week's detention of top Mexican drug lord Ismael “El Mayo” Zambada and Joaquín Guzmán López.

The lawyer of a powerful Mexican drug cartel leader who is now in U.S. custody is pushing back against claims that his client was tricked into flying into the country.

The lawyer of a powerful Mexican drug cartel leader who is now in U.S. custody is pushing back against claims that his client was tricked into flying into the country.