I think that's an awful idea that would get exploited the second it was allowed.
I can imagine all sorts of medical practices popping up in third world countries that prescribe cocaine and other horrible illegal drugs to people. Then those people would go back to their home countries with essentially a free pass on those drugs.
To make an analogy, if I have a child and I let her run around jumping on furniture and destroying things, should you let her do the same when she comes over to your house?
The solution to the problem you're describing isn't to let one country/state override the rules of another, but to have all countries/states agree on a common set of rules.







