MEXICO has 11 billionaires, according to Forbes magazine. Ten are often pictured smiling at charity dinners and other posh bunfights. One, Joaquín Guzmán Loera, has a rather different mugshot. Wearing a cheap anorak, he is pictured shivering in the rain inside the concrete walls of a high-security prison. Mr Guzmán, who is better known by his nickname El Chapo, or “Shorty”, is one of Latin America’s most successful exporters, having made perhaps $1 billion as chief executive of the Sinaloa drug “cartel”.