I am from California. I am planning on a trip to South America in 3 weeks. I will be travelling for Business purpose. I have nothing planned, as of which all countries in SA, I will have to visit as a part of my work. It will be based on my work requirement at that point. I understand that there are a few countries that require VISA, prior to travel or arrival. Now my concern is , can I get VISAs for those countries while I am in a different country in SA by going to the embassy of the target country. For example., Argentina doesnt require a VISA for stay period less that 90 days, so while I am there, if I have to go to Brazil or Bolivia, Can I get a VISA from their embassies in Argentina. if yes what would be the procedure.