Information on USA visa regulations can be found here.
Due to the backlog of applications at US Embassies and Consulates around the world, we encourage international travelers who require a visa to come to the US to register and commence the process of securing a visa as soon as possible.
We can provide an invitation letter for participants who have already registered for the conference. Make sure that the payment of the conference fees is successful before requesting a letter, and keep your registration confirmation number on hand because it will be needed.