Please visit this site for information on the application process and visa form to enter the US: http://travel.state.gov/content/visas/english/visit/visitor.html Some countries may also require additional approval from that country. Please start these requests early – at least 3 months prior to the NPC’2015 Conference, which runs Sept 17-19, 2015. In addition, please note that US visa processing costs are normally $160.
The following countries are eligible for visa-exempt entry to the United States for up to 90 days: Andorra, Australia, Austria, Belgium, Brunei, Chile, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Japan, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, Netherlands, New Zealand, Norway, Portugal, San Marino, Singapore, Slovakia, Slovenia, South Korea, Spain, Sweden, Switzerland, Taiwan, United Kingdom.
NPC 2015 invitation letters can be issued only to accepted authors or other registrants who have completed their NPC’2015 registration payment. If you require an official invitation letter or further assistance on United States visitor visas, please contact us at: NPC 2015 Secretariat E-mail: email@example.com