Yeah, I saw fake teaching certificates, or heard about them, and fake visas, etc, in Vietnam, and I just got back to America last year, and I'm not too sure if any of the visas or anything else I had were ever fake or not but I'm hoping I was not involved in illegal stuff but I can see that prohibition does not work and has not worked, when you force things onto black markets, be it drugs, beer, sex, the dark webs, and maybe even tourism or whatever.