Tripling Down Against USA Conference Hosting
I think one good criterion (among others) for deciding in what country to hold a conference is the number of countries whose citizen can enter without visa. There's a list on Wikipedia that you can sort by that criterion [1].For the USA, it's 42 (what else). Canada, 52. For Schengen area (most of EU), 92. Hong Kong, 148, Indonesia, Cambodia even more. China only 12.So, South East Asia or Europe seem reasonable on that score.[1] https://en.wikipedia.org/wiki/Travel_visa#Visa_policies