Group Registration Information
International Travel Regulations
Invitation Letter |
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Traveling to the United States
The United States welcomes international visitors. All international visitors (foreign nationals) entering the U.S. are generally required to present a passport and valid visa issued by a U.S. Consular Official.
Invitation Letter
International attendees can obtain a letter of invitation here. This is an interactive PDF form. Simply fill out the form and press the "Print Invitation" button.
Passport and VISA Application Requirements
The American Society for Microbiology (ASM) and the Infectious Diseases Society of America (IDSA) invites and welcomes scientists from every part of the world to attend and participate in the 48th Interscience Conference on Antimicrobial Agents and Chemotherapy & the 46th Annual Meeting of the Infectious Disease Society of America.
Please allow ample time for visa processing, as the application process can take several months in some countries.
To find out if you need Visa or for more information on the application process, you may wish to visit the National Academies (use this link http://www7.nationalacademies.org/visas/Traveling_to_US.html) website.
The leadership of the National Academies is working with the U.S. Government to develop a better way of processing Visa applications. If anyone in your group is experiencing difficulties obtaining a visa, please report the case to the National Academies by completing an online questionnaire (use this link http://www7.nationalacademies.org/visas/Visa_Questionnaire.html).
Passports
A passport is an internationally recognized travel document that verifies the identity and nationality of the bearer. A valid passport issued by the visitor’s home government is required to enter and leave the United States. Passports should be obtained in the visitor’s home country. Only the U.S. Department of State has the authority to grant, issue or verify United States passports.
Nonimmigrant visas are for international travelers, (citizens of other countries), coming to the U.S. temporarily. This visa allows you to travel to a U.S. port-of-entry (airport, for example) and request permission of the Department of Homeland Security immigration inspector to enter the U.S. A visa does not guarantee entry into the United States.
International travelers come to the U.S. for a wide variety of reasons, including tourism, business, medical treatment and certain types of temporary work. The type of visa needed is defined by immigration law, and relates to the principal purpose of your travel. While in the U.S., temporary visitors are restricted to the activity or reason for which their nonimmigrant visa was issued, with few exceptions. The Consular Officer at your embassy or consulate will decide what kind of visa you need, when you apply.
*NEW*
As of January 23, 2007, ALL persons traveling by air between the United States and Canada, Mexico, Central and South America, the Caribbean, and Bermuda are required to present a valid passport or Air NEXUS card.
*If your country participates in the Visa Waiver Program, skip to Travel Without Visa)
(from http://usinfo.state.gov/journals/itps/0905/ijpe/visacode.htm)
To obtain a visa and enter the United States, you must begin by completing an application form, DS-156. Contact the U.S. Embassy in your country tomake an appointment. Take your application, passport, a photograph, and supporting documents to the embassy or consulate, where you will be interviewed about the purpose of your visit. You must also pay an application fee, currently $100. The visa allows you to travel to a U.S. port-of-entry where an official will again look at your travel documents before granting you permission to enter the country.
Recent procedural changes:
- All males between the ages of 16 and 45 are required to complete an additional form, DS-157, to provide a detailed history of their previous travel and their affiliation with various institutions. Consular officers can request that this form be filled out by other applicants as well.
- All student and exchange visitors, regardless of nationality, must complete a supplemental application form and be enrolled in SEVIS by their sponsoring institution.
- Almost all persons requiring visas must have a face-to-face interview with a consular officer. Previously, consular officers could waive the requirement for an applicant's personal appearance, and some travel agents could submit applications for their clients. Because this is no longer the case, over the past three years the State Department has greatly increased the number of its consular officers and worked to improve appointment scheduling systems.
- Technological systems have been put in place to electronically share visa files and law enforcement and watch-list information, as well as to track student enrollments. Since 2004, the technology, the consolidation of databases, and the correction of problems within these systems have been dramatically improved and backlogs reduced.
- Since 2004, embassies have been instructed to expedite the processing of visas for students and business travelers. As a result, consular posts have set up special appointment times and now give priority to scheduling and processing these visas.
- The United States and many other countries are moving toward tamper-resistant machine-readable visas, passports, and other entry-exit documents that contain digital photographs and biometric indicators, such as fingerprints. For instance, finger scans are taken during the visa application process and again on arrival in the United States.
- Information on the identity of all passengers is provided to U.S. immigration officials by all commercial ships and airplanes en route to the United States.
- Passengers who would normally require a visa to enter the United States must now have one even if they are just in transit, traveling on a carrier that stops in the United States on its way to another destination.
The requirements and costs for a U.S. visa are similar to those of other democracies; and the need for a visa, additional fees charged, and any restrictions imposed are based on reciprocity with other nations—that is, they match the requirements that other countries place on U.S. citizens wishing to travel there.
For more information, we suggest you read “Deciphering the Visa Code”, an e-Journal, which can be found at: http://usinfo.state.gov/journals/itps/0905/ijpe/visacode.htm.
The Department of State can authorize travel to the United States however, a visa does not guarantee that you will be allowed to enter the United States. Customs and Border Protection (CBP) has the authority to grant or deny your admission to the United States. The Bureau of Citizenship and Immigration Services determines how long you may stay in the United States and whether or not you may extend your stay. You may contact them at 1-800-375-5283.
Travel Without a Visa
Foreign nationals that are lawful permanent residents of the U.S. must present a Permanent Resident Card (“Green Card”), a Reentry Permit, or a Returning Resident Visa, and their passport to reenter the United States if traveling from outside the Western Hemisphere.
Visa Waiver Program (VWP)
U.S. visa policy permits citizens of certain countries to travel to the U.S. without a visa. Most Canadian citizens and many citizens from Visa Waiver Program (VWP) countries can come to the U.S. without a visa if they meet certain requirements. The VWP allows foreign nationals from certain countries to be admitted to the U.S. under limited conditions and for a limited time without obtaining a visa. The foreign national must be coming from an eligible country, staying no more than 90 days, for pleasure/medical purposes, and able to prove they are not inadmissible. The foreign national is still required to have a passport. Visa waiver travelers from ALL 27 VWP countries must present a machine-readable passport at the U.S. port of entry to enter the U.S. without a visa, otherwise a U.S. visa is required.
Currently, the 27 countries below participate in the VWP.
Andorra |
Iceland |
Norway |
Australia |
Ireland |
Portugal |
Austria |
Italy |
San Marino |
Belgium |
Japan |
Singapore |
Brunei |
Liechtenstein |
Slovenia |
Denmark |
Luxembourg |
Spain |
Finland |
Monaco |
Sweden |
France |
the Netherlands |
Switzerland |
Germany |
New Zealand |
United Kingdom |
*NEW* As of October 26, 2006, any passport issued on or after this date by a VWP (VWP) country must be an e-Passport for VWP travelers to be eligible to enter the United States without a visa. For information on e-Passport visit here.
Learn more about the VWP by visiting http://travel.state.gov/visa/temp/without/without_1990.html.
Citizens of Canada, Mexico, and Bermuda
Currently, Canadian citizens need proof of both their identity and citizenship in order to apply for entry into the U.S. Citizens of Canada traveling to the U.S. do not require a nonimmigrant visa, except under unique circumstances. Citizens and permanent residents of Mexico generally must have a passport and a nonimmigrant visa or Border Crossing Card (also known as a "Laser Visa"). A visa and passport are not required of a Mexican national who is in possession of a Form DSP-150, B-1/B-2 Visa and Border Crossing Card, containing a machine-readable biometric identifier, issued by the Department of State and is applying for admission as a temporary visitor for business or pleasure from contiguous territory. If the traveler is not coming from the Western Hemisphere, a passport is required.
Citizens of the British Overseas Territories of Bermuda do not require a visa unless they have a criminal ineligibility, or have previously violated the terms of their immigration status in the United States. Currently, citizens of Bermuda need proof of both their identity and citizenship in order to apply for entry into the U.S.
Citizens of all of these countries and territories are advised to visit the following website to verify their travel documentation needs: http://www.travel.state.gov/visa/temp/without/without_1260.html.
Arriving in the U.S.
On the airplane, you will be asked to complete a short arrival/departure form. You will need your visa and/or passport handy. You will need to present your visa and/or passport at the port of entry in the United States. Most often that port of entry will be the airport where you land.
When you deplane, follow signs for non-citizen entry. At that location, a Department of Homeland Security official will interview you and verify all of your paperwork. Under the US-VISIT Program of the Department of Homeland Security, most people arriving in the U.S. will submit to a fingerscan of the two index fingers and a photograph. Once admitted, you will receive an immigration stamp and proceed to baggage claim and customs. For information about arriving in the U.S., including arriving by land or sea, see US-VISIT.
Upon arrival in the U.S., certain foreign citizens are required to register under Special Registration, which is the National Security Entry Exit Registration System (NSEERS) program. Registration under NSEERS is a distinct process from US-VISIT.