B-1: Temporary Business Visitor - allows an individual to conduct activities of a commercial or professional nature. For example, consult with business associates, negotiate a contract, or attend a business conference.
B-2: Temporary Tourism/Pleasure Visitor - allows an individual to visit relatives/friends, vacation, etc.
F-1: Full-time academic students
F-2: Spouses and children (dependents) of F-1 visa holders
F-3: Canadian or Mexican national academic commuter students (border commuters) who reside in their country of origin while attending PT/FT school in the U.S.
G-1: allows an individual a non-immigrant visa which allows a designated principal resident representatives of a foreign government recognized by the U.S. to enter into the U.S. to work for an international organization and not for personal business or pleasure.
M-1: Vocational/Technical Student
M-2: Spouses and children (dependents) of M-1 visa holders
M-3: Canadian or Mexican national academic commuter students (border commuters) who reside in their country of origin while attending PT/FT school in the U.S.
J-1: Exchange Visitors - allows an individual (students, teachers, researchers, trainees, alien physicians, au pairs, others) to participate in an educational and cultural exchange programs designed by the Department of State, Bureau of Consular Affairs.
J-2: Spouses and Children of J-1 visa holders
O-1: Individuals with Extraordinary Ability or Achievement – allows an individual who possesses extraordinary ability in the sciences, arts, education, business, or athletics, or who has a demonstrated record of extraordinary achievement in the motion picture or television industry and has been recognized nationally or internationally for those achievements.
P-1A: Internationally Recognized Athlete – allows an individual to come to the U.S. temporarily to perform at a specific athletic competition as an athlete, individually or as part of a group or team, at an internationally recognized level of performance.
P-1B: Member of Internationally Recognized Entertainment Group - allows an individual to come to the United States temporarily to perform as a member of an entertainment group that has been recognized internationally as outstanding in the discipline for a sustained and substantial period of time.
P-2: Performer or Group Performing under Reciprocal Exchange Program - allows an individual to come to the United States temporarily to perform as an artist or entertainer, individually or as part of a group, who will perform under a reciprocal exchange program between an organization in the United States and an organization in another country.
P-3: Artist or Entertainer Part of a Culturally Unique Program - allows an individual to come to the United States temporarily to perform, teach, or coach as artists or entertainers, individually or as part of a group, under a program that is culturally unique.
Q: Cultural Exchange - allows an individual to participate in an international cultural exchange program designated by USCIS for practical training and employment, and share the history, culture and traditions of his home country with the U.S.
R-1: Temporary Religious Workers - allows a foreign national to temporarily be employed at least part time by a non-profit religious organization in the U.S. to work as a minister or in a religious vocation or occupation.
TN: NAFTA Professionals - permits qualified Canadian and Mexican citizens to seek temporary entry into the U.S. to engage in business activities at a professional level.
Naturalization/Citizenship - the process by which U.S. citizenship is granted to a foreign citizen after fulfilling requirements.