A Story You've Read Before: Huge Bust in Manzanillo

For the fourth time in just over a year and a half, there was a huge bust of meth precursor chemicals in Manzanillo, with a seizure of 38 tons worth announced earlier today. This follows a 20-ton seizure in September of 2009, and two 80-ton busts in May of last year. There have also been lots of smaller seizures of several hundred pounds or a few tons here and there. So if more than 200 tons are getting seized every 18 months in just Manzanillo, how much is getting through in all of the nation's ports?