If the drug trade caters to foreigners, then isn't it plausible that locals are selling to foreigners? In this case, how would foreigners be responsible for "p

If the drug trade caters to foreigners, then isn't it plausible that locals are selling to foreigners? In this case, how would foreigners be responsible for "poisoning their society"? To me this sounds a lot like what you here in the West concerning drugs... America claims its' foreign traders with "terrorist connections" who do drug sales (e.g. all the talk about Colombian drug cartels, or Mexican drug wars).