While the involvement of Chinese money-laundering rings in handling drug proceeds from Mexico is nothing new, a number of recent court cases in the United States have revealed crucial information about how these schemes work. InSight Crime looks at how colossal amounts of money are being laundered, the seemingly legitimate businessmen behind it all and why US prosecutors are stumped about how to proceed. . 1. The Launderers In late April, a US-based Chinese citizen, Gan Xianbing, was sentenced to 14 years