Lost in the Laundry

On a good day, Isaac Kattan Kassin deposited as much as $1 million. The money would be delivered almost every morning to three or four different banks in the Miami area. The convicted drug dealer's teams of Hispanic helpers, often aided by bank guards, would lug cardboard boxes and suitcases stuffed with cash to the tellers' windows. That simple method of handling his share of the $12 billion or so in "nar-cobucks" that flood Florida each year used to be the norm—until he and others like him began running afoul of Operation Greenback, the federally coordinated effort to control the drug...