They are not hard to find in the U.S. Never bought any, but I have heard you definitely need to know the right person. I'm with Cait on this. There is a reason some drugs are illegal. Never understood why marijuana was illegal though. It's one that is actually good for you. I guess maybe it's just to cut down on obesity.
No person or government has the right to tell me what I should or shouldn't put into my body. I have agency and the ability to decide whether something is good for me or not. There's just no excuse for a government to criminalise drug use, especially when so much habitual drug use is a medical problem, not a criminal one.