A foreign national or alien entering the U.S. is generally required to present a passport and valid visa issued by a U.S. Consular Official, unless they are coming from a country eligible for the Visa Waiver Program, or are a lawful permanent resident of the U.S. or a citizen of Canada. To obtain a list of countries eligible for the Visa Waiver Program, please reference the Department of State web site.
A visa allows you to travel from your country to a port of entry in the United States. Most often that port of entry will be the airport where you land. On the airplane, you will be asked to complete a short arrival/departure form. 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. For most persons arriving in the U.S., there will be a fingerscan of the two index fingers and a photo will be taken. Once admitted, you will receive an immigration stamp and proceed to baggage claim and customs.
Supplemental Application – All male nonimmigrant visa applicants between the ages of 16–45, regardless of nationality or other factors, must now complete a supplemental application form which helps inform the consular officer's judgment about visa eligibility. Consular officers have the authority to require anyone from any country to complete visa forms if they think it's warranted.
Visa Processing Time:
Recent changes in U.S. visa policy and procedures have increased the amount of time it can take to obtain a visa. If you want to visit the U.S., plan to submit your visa application well in advance of your departure date. Contact your nearest U.S. embassy or consulate for a current time estimate and recommendations.
How to Get a Visa:
Download the How To Obtain a U.S. Visa guide published by the Department of State for detailed information on obtaining an U.S. visa.
Visit the Department of State web site to download visa application forms.
Should you need a letter of invitation to obtain a visa, please email the Conference Registrar
A foreign national or alien entering the U.S. is generally required to present a passport and valid visa issued by a U.S. Consular Official, unless they are coming from a country eligible for the Visa Waiver Program, or are a lawful permanent resident of the U.S. or a citizen of Canada. To obtain a list of countries eligible for the Visa Waiver Program, please reference the Department of State 
