Normally, all foreign nationals wanting to enter the United States must have a valid visa issued by an American consulate in their country of residence. There are a few limited exceptions. The most common exception is for those entering under the Visa Waiver Pilot Program.
There is an exception to the above for citizens of Canada and of the British Overseas Territories of Bermuda. They can travel to the U.S. without a non-immigrant visa. This does not apply if the individual has a criminal record that makes him/her ineligible or if the person has previously violated the terms of his/her immigration status in the United States.
There are only 27 countries that qualify under the U.S. Visa Waiver Program. If you are a national of one of the following countries, you can travel to the United States of America for tourism or business for up to 90 days without obtaining a visa:
Andorra, Australia, Austria, Belgium, Brunei, Denmark, Finland, France, Germany, Iceland, Ireland, Italy, Japan, Liechtenstein, Luxembourg, Monaco, the Netherlands, New Zealand, Norway, Portugal, San Marino, Singapore, Slovenia, Spain, Sweden, Switzerland, and the United Kingdom.
When entering the USA you must be carrying a valid passport from one of the countries specified above. In addition, you must possess a return trip ticket to prove that you intend to leave the USA within 90 days.
There are several disadvantages to entering under the visa waiver program:
If you are planning to stay more than 90 days you should apply for a visa. You will not be permitted to extend your visit or change to another visa category under the Visa Waiver Program. So it’s recommended to get a visa before you come to the USA, even if you can enter without one.
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