Here are the main types of US visas:
Visitor Visas. The US visitor visas are issued to those who want to go to the United States to visit for a maximum of six months and are divided into:
B1 visa for business visits.
B2 visas for tourism visitors.
Student Visas. The F and M visas are for academic and vocational purposes. Depending on your school and your field of study, you will have to get either the F1 or the M1 visa. These are the categories of the US student visas:
F1 visa.visa for students.
F2 visa. dependents of F1 visa holders.
M1 visa. visa for vocational purposes.
Exchange Visitor Visas. The exchange visitor visas are targeted to those who participate in exchange programs and some type of practical training and employment within the United States. These visas are divided into:
Temporary Work Visas. These visas are issued for temporary work in the United States. Here are the categories of work visas:
H1B visa. For persons who have been employed in highly specialized fields.
H1B1 visa. For nationals of Chile and Singapore.
H-2A visa. Granted to temporary agricultural workers from selected countries in whom the US has some type of interest.
H-2B visa. Given to other types of temporary seasonal workers, who do non-agricultural work.
H-3 visa. Obtained by those who want to take advantage of training and education opportunities.
L1 visa. Issued to intracompany managers or executives.
People who have what is called an extraordinary ability in Arts, Science, Business, Education, or Athletics and want to temporarily work in their field of expertise need an O visa. There are three types of O visas:
O1 visa – for persons with extraordinary abilities.
O2 visa – for the assistants of O1 visa holders.
O3 visa – for dependents of O1 visa holders.
P visas. are issued to sportspersons and their coaching teams.
Temporary Religious Workers who want to practice within the US in religious capacities need to get the R1 visa type.
TN/TD visas. are for citizens of Canada or Mexico who will be working in the NAFTA organization.
E3 visas. For nationals of Australia. who will be working in specialty occupations.
I visa. For representatives of foreign media and journalists part of the press, film, radio, or print industries, who are visiting the US to work or participate in educational media activities.
Treaty Trader and Investor Visas. The E visas are called Treaty Trader and Treaty Investor visas respectively, are for those who have treaties of commerce and navigation in the US. There are two types of this visa:
E1 Visa – treaty trader visa.
E2 Visa – treaty investor visa
Diplomatic and Official Visas. Categories of official and diplomatic visas are the following:
The A1 visa is for diplomats or foreign government officials who are travelling to the US on official duties or representing their government.
The A2 NATO1-6 visa is designed only for foreign military personnel who are about to serve or be stationed within the United States.
If you have been employed in an international organization in the United States, you will need to get a G-1 to G-5 visa. Those who will work for NATO, will get the NATO visa.
Visas for Victims of Crime and Human Trafficking. The following visas are part of this type of visa:
T visas are for victims of human trafficking who have severe trauma, but can also assist in investigating crimes related to human trafficking.
The U visa is for those who have been a victim of certain criminal activities and that can aid in the investigation or prosecution of those criminals.
Transit and Crewmember Visas. Here are the categories of this type of visa:
The C Visa is a Transit Visa USA.
The D visa is for crew members who will work on a sea vessel or international airline.
Immediate Relative & Family Sponsored Visas. Here are the categories of the Immediate relative and Family Sponsored visas:
The F2A and F2B visas are for the families of Lawful Permanent Residents, more specifically their spouses, minor children, or unmarried sons and daughters aged 21 and above.
IR-2 visa – for unmarried children under 21 years old
IR5 visa – for parents of US Citizens who are at least 21 years old
F1 – for unmarried sons and daughters and their minor children
F3 visa – for married sons and daughters and their minor children
F4 visa – for brothers and sisters of US Citizens, and their spouses and minor children.
The IR3, IH3, IR4, IH4 visas are for children from other countries who will be adopted by US citizen parent(s)
The SQ visa is for Iraqi or Afghan citizens who will be working for or on behalf of the US government and get Special Immigrant Visas (SIVs).
Fiance and Spouse Visas. Here are the categories:
K3 visas are for spouses of US citizens who are in the process of obtaining permanent immigration status.
The IR1 and CR1 visas are for spouses of US Citizens.
Children of the K-3 visa applicants are eligible to receive K-4 visas
Employer-Sponsored Visas. The following visas are issued for.