USA Visa Information Center USA Immigration law states that you must obtain a visa / permit to enter America. A visa is an official 'permit' authorizing you to enter the USA, for a specific reason and for a specified period of time. There are many different types of visas / permits and depending on the nature of your visit to the USA (e.g. travel, study, work), this will decide which is the most appropriate visa / permit for you. There are two USA Visa / permit classifications:- "Immigrant" visa and "NonImmigrant" visa:
The most common USA Visa is a "Nonimmigrant" Visa - this is for someone who intends to come to the USA "temporarily" and for a specific purpose. Typically on an H1B Work Visa, F1 Study Visa, L1 Intra-Company Transfer Visa, K and V Fiancee Visas.
An "Immigrant" Visa is for someone who intends to relocate to the USA, to live and work "permanently" (Green Card - Lawful Permanent Residents).
H1B Visa- the primary US Work Visa for professionals & students from all over the world or in the USA, who work in specialty occupations. Valid up to 6 years, dual intent visa (can apply for Green Card)
H2B Visa - temporary visa for short term ‘Seasonal’ work such as in the hospitality and tourist industries
Green Card - permanent residency visa – unlimited duration, can lead to US Citizenzenship
E3 Visa- similar to the H1B but is available to Australian Citizens only
TN1 Visa- similar to the H1B but is available to Canadian & Mexican Citizens only
L1 Visa-for senior employees who work for Company outside the USA and want to transfer to same Companies offices in the USA