Did the program say that the US Govt. taught the farmers to grow coca in comercial quantities? Or did the US simply teach them better farming methods which they then applied to coca production?
I rather think the latter is the case. To blame the US in this case is akin to blaming the General Accounting Office because an employee steals a few million using computer techniques he learned on the job.
Ya gotta blame somebody and they're handy. I'm sure I will be corrected if I am wrong.

troll