The Drug Policy Alliance has started a letter campaign against a plan currently under consideration in the US Senate that basically amounts to launching a biological warfare attack against countries such as Columbia and Afghanistan.

Mycoherbicides have already been extensively studied over the last thirty years - and the results make it clear that they are not an option for controlling crops of coca or opium poppies. They attack indiscriminately, destroying fruit and vegetable crops, causing open sores and feminization in reptiles and other animals, and sickening humans as well. The toxins mycoherbicides produce contaminate soil for years, so that nothing can grow where they have been. Mycoherbicides are so destructive that governments have even stockpiled them as weapons...

Sounds real pleasant.