Treaty Traders and Investors
E1 Treaty Trader, spouse and children
E2 Treaty Investor, spouse and children

Academic Students
F1 Academic Student
F2 Spouse or child of F1

For Foreign Medical Graduates
(see individual categories H1B, J1, O1, TN, E2)

Temporary Workers
H1B Specialty Occupations (Professionals, Graduates)
H1C Nurses going to work for up to three years in health professional shortage areas
H2A Temporary Agricultural Worker
H2B Temporary worker: skilled and unskilled
H3 Trainee
H4 Spouse or child of H1, H2, H3

E3 for Australians
TN1 for Canadians and Mexicans

OPT for International Students in USA

Foreign Media Representatives
I Visas for foreign media representatives

Exchange Visitors
J1 Visas for exchange visitors
J2 Spouse or child of J1

Fiancé(e) of US Citizen
K1 Fiancé(e)
K2 Minor child of K1
K3 Spouse of a U.S. Citizen (LIFE Act)
K4 Child of K3 (LIFE Act)

Fiancé(e) of Green Card Holder
V1 Fiancé(e) 

Intra-company Transfer (ICT)
L1A Executive, managerial
L1B Specialized knowledge
L2 Spouse or child of L1

Vocational and Language Students
M1 Vocational student or other non-academic student
M2 Spouse or child of M-1

Workers with Extraordinary Abilities
O1 Extraordinary ability in Sciences, Arts, Education, Business, or Athletics
O2 Alien's (support) accompanying O1
O - Spouse or child of O1 or O2

Athletes and Entertainers
P1 Individual or team athletes
P1 Entertainment groups
P2 Artists and entertainers in reciprocal Exchange programs
P3 Artists and entertainers in culturally unique programs
P4 Spouse or child of P1, 2, or 3

International Cultural Exchange Visitors
Q1 International cultural exchange visitors
Q2 Irish Peace Process Cultural and Training Program (Walsh Visas)
Q3 Spouse or child of Q-2

Religious Workers
R1 Religious workers
R2 Spouse or child of R1