A federal judge in Mexico has ruled that drug lord Joaquin "El Chapo" Guzman can be extradited to the US. Guzman is wanted there on charges of smuggling vast amounts of drugs into the country. The Mexican foreign ministry now has 30 days to decide whether or not to approve the extradition. Guzman was the head of the Sinaloa drug cartel. He was captured in January, six months after escaping through a one-mile tunnel from his maximum-security prison cell.