It is imperative that authors and delegates allow sufficient time to
Information on United States visas can be found here and
here. It is advisable to begin the application process as early as possible to avoid last minute problems. The time to obtain a visa can vary widely and has taken over three months for some individuals in the past. An interview at a consulate may also be required. Authors who wait until notification of the acceptance of their papers before applying for visas risk not receiving visas in time to present their work.