US Visa Information for International Travelers
The American Physical Society provides updated visa information.
Visa Waiver Program
The US State Department's Visa Waiver Program (VWP) allows most citizens and nationals of participating countries to enter the US for stays of up to 90 days without first obtaining a visa. Travelers eligible for the Visa Waiver Program must have a valid Electronic System for Travel Authorization (ESTA) approval prior to travel. For more information on the Visa Waiver Program, including a list of participating countries and requirements, please visit the US Visa Waiver Program Website.
While in most cases an invitation letter is not necessary to
apply for ESTA, upon request the conference organizers will
provide a letter which you can bring and show to immigration
officials when entering the US. To request an invitation
letter, please email the organization committee
at 
. We may follow up with you
to request additional information such as a passport number
and required contact information.
Applying for a US Travel Visa
We encourage international travelers who require a visa to
enter the United States to apply as soon as possible. Upon
request, the conference organizers will provide a letter of
invitation to all bona fide conference attendees that can be
submitted with the visa application. To request a letter,
please email the CCP2018 organization committee
at . We may follow up with you
to request additional information such as a passport number
and required contact information.
In the event that you register for the conference and your
visa application is denied, the organizers will waive the
normal cancellation penalty and provide you a full refund
of the conference registration fee.
The United States National Academy of Sciences (US-NAS) has setup a website to assist all foreign conference attendees who need to apply for a visa. This website is an important resource for scientists attending conferences in the United States. In addition to providing background material, the site provides information regarding country specific visa requirements, advice regarding possible visa delays, and advice to travellers upon arrival in the United States.
The conference organizers have registered CCP2018 with the US-NAS. According to the US-NAS, this insures that information about CCP2018 will be shared with the US Department of State Visa Services and should be available to US Consular Offices worldwide.
