There are different kinds of nonimmigrant visas, Identified by the letters A-R, available for persons who do not intend to remain in the United States permanently. All nonimmigrant visas are based on what the applicant intends to do in this country. Following is a list of the visa categories.
A Visa: for diplomats and their families
B Visas: B-1 Visas are for aliens coming to this country to do business but not for employment or labor for hire, and are commonly used by aliens coming to do business research, engage in litigation, or negotiate contracts;
B-2 Visas: the most common nonimmigrant visas, allow aliens to enter the country temporarily to engage in tourism visits with friends or relatives or to receive medical treatment.
C Visas: to enter the United States only for immediate and continuous transit through the country to a third country
D Visas: for crew members of foreign vessels or airplanes.
E Visas: for traders and investors covered by commercial treaties between the United States and foreign countries, as well as spouses and children of E Visa holders.
F Visas: for students in full-time academic programs, from the elementary school level up to the post-graduate level, as well as spouses and children of F Visa holders; F Visa holders are allowed to be employed for fewer than 20 hours a week, mainly at certain on-campus jobs typically done by the student
G Visa: for representatives, officers, and employees of foreign countries to international organizations
H Visas: for works needed by United States employers to fill temporary openings; H-1B Visas commonly are held by aliens with highly specialized knowledge working in professional jobs.
Visas: for media representatives and their families.
J Visas: designed to bring foreigners here to participate in exchange programs designated by the United States Information Agency.
K Visas: to allow an alien engaged to a United States citizen to enter to marry the citizen, as well as for any minor children of the alien.
L Visas: for intracompany employee transfers (e.g., for employees of multinational corporations).
M Visas: for students in vocational or nonacademic study programs.
N Visas: for relatives of certain international organization employees here on G Visas.
O Visas: for artists, entertainers, athletes, scientists, and certain business professionals with extraordinary abilities in their fields, and persons needed to accompany and assist them.
P Visas: for performing artists, entertainers, and athletes; similar to visas, but easier to get and intended more for group entertainers or athletes who come here for specific performances or tours.
Q Visas: for participants in international cultural exchanges.
R Visas: for religious workers and their families.