Substance abuse in the USA
" On your medical, here in the States they do ask, about it, if you get caught and don't inform the FAA, you Certificate goes away. Same for heavy drinking, they days of drinking breakfast, then go fly all day are gone "
The key here is going flying and abusing a substance at the same time. If you do have a substance abuse problem in the US, you can still obtain a medical from the AMCD provided you have cleaned up.
AL