International Travel and Visas to the United States
If you need to apply for a temporary non-immigrant visa to attend the Congress you are advised to apply for your visa as soon as travel to the United States is contemplated and no later than 3-4 months in advance. International participants should start the visa process during June 2025 or earlier. If your country of residence is different from your country of citizenship or birth, it is recommended to start the application process at least 6 months in advance of the Congress. All applicants must qualify for a visa on their own merits under the requirements of the Immigration and Nationality Act. Pacifichem 2025 cannot intervene with the U.S. State Department or an American embassy in another country on behalf of any meeting participant.
References and Resources to Apply for a United States Visa
Obtain an Invitation Letter/Announcement
An invitation letter or announcement from the meeting organizer is required with visa applications.
Presenters
If you need documentation about an accepted abstract for a visa application, the invitation letter will be located under “Messages” in the 2025 Pacifichem Abstracts System presenter’s account once the abstract has been accepted and sessioned, retrieve the Acceptance Letter from your submission account directly use “Messages (New).” Note – in the abstract system the letter is titled “Visa Letters.”
Please note that sessioning of abstracts will not occur until June 2025, if you would like an invitation letter/announcement prior to June 2025, please register for the Congress and follow the instructions below for non-presenter attendees.
Non-Presenter Attendees
To obtain a general invitation/announcement please complete the request form.
Note: you must register and pay for registration prior to receiving an invitation/annoucement.
Complete the form to request an invitation/announcement to attend Pacifichem 2025 (to be submitted with visa applications). After you have submitted the form, Pacifichem staff will email you a PDF version of the letter.
Other Helpful Resources for Traveling Internationally
- US Visa Waiver Program – https://travel.state.gov/content/travel/en/us-visas/tourism-visit/visa-waiver-program.html
- Country Entry Requirements – https://www.usa.gov/enter-us
- Universal currency converter – https://www.xe.com/currencyconverter/
- Link to US Embassy and Consultants – https://www.usembassy.gov/