It's not so much that the US doesn't know how to dope, it's the USADA testing, if you're in a power sport with a known drug problem, and it's not a popular or monied sport in the US, they are going to test you till the cows come home. Certain other countries set up their anti doping programs so that the athletes can dope during the off season and only step in a few months before big competitions.
Alas, we'll never adopt a nice strategy like that.