Back the day when I was in the academia I suggested some fixed set of countries visa friendly to host those conferences on AI/Databases. The point that I made

Back the day when I was in the academia I suggested some fixed set of countries visa friendly to host those conferences on AI/Databases. The point that I made for the organizers is that, you can have clear instructions to the immigration offices and/or border control of those places if they had the full plan in advance: number of attendees, all info of the attendees already set in those departments, cross-check with their own embassies and consulates, etc. Their justification in that time was that it's important to rotate in different cities because it closes the ties with the local academic community, but I did not brought that; can be a bit harsh but the whole thing sounded a reason to made academic tourism instead to foster a knowledge sharing. Take that conference[1] for example and it's last venues: 2023 - Singapore 2022 - Seattle 2021 - Amsterdam 2020 - Online 2019 - Copenhagen 2018 - Vancouver 2017 - Como 2016 - Boston 2015 - Vienna 2014 - Silicon Valley 2013 - Hong Kong 2012 - Dublin 2011 - Chicago 2010 - Barcelona 2009 - New York 2008 - Lausanne 2007 - Minnesota Unless that you have a strong passport or if you're from US/EU it's quite unlikely that you can have all the visas for attend all those conferences. [1] - https://recsys.acm.org/ https://recsys.acm.org/