Andorra, Argentina, 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, the United Kingdom and Uruguay. Visitors entering on the Visa Waiver Pilot Program cannot work or study while in the U.S. and cannot stay longer than 90 days or change their status to another category.

For a longer stay, a visa is required: F, J or M visa for students and internship, H for workers. Only a certain number of visas are granted each year and depend on the original country (For ex. Only 195,000 H1-B visas were available for 2001).

Visit http://travel.state.gov/visa_services.html or http://www.usvisa.com to learn more about the different types of visas.

The non immigrant visas
Non immigrant visas can be delivered very quickly, sometimes within a day, but can sometimes take up to several months.

There are more than 50 temporary visas. The visa is granted in relation to the purpose of your visit to the US. Entitlement and length of stay may vary depending on the visa applied for.

Most common type of visas:

B1: Business visit
B2: Tourism visit
E1: Business visas for international business from the US
E2: Investor Visas, for managers or investment related employment
F1: Students
F2: Family member of a F1 visa holder
H1B: Employee of a US company, required specific skills and a bachelor education
H3: Temporary internship
H4: Family member of a H1, H2, H3 visa holder
J1: Related to an exchange within the American Information Agency exchange program
J2: Family member a of a J2 visa holder
L1: Inter company exchange within a group of companies, for managers, or highly skilled employee
L2: Family member for L1 Holder
M1: Vocational and professional training
M2: Family member of a M1 visa holder
V: Spouse or dependant child of a permanent resident waiting for a green card.
More details available on: http://faq.visapro.com/Default.asp or http://www.UsVisa.com

You can contact :

go to the web site http://www.travel.state.gov/
call specialised lawyers, for instance Siskind and Al at www.visalaw.com or look at the site www.us-immigration.com, created by immigrants.