Visa	Description
A	Diplomat or foreign official
B-1	Athlete, amateur or professional (competing for prize money only) Business visitor Domestic employee or nanny – must be accompanying a foreign national employer
B-2	Medical treatment Tourism, vacation, pleasure visitor
C	Transiting the United States
D	Crewmember
E-1 / E-2	Treaty Trader/Treaty Investor
E-3	Australian professional specialty
F, M	Student: academic, vocational
G1-G5, NATO	Employee of a designated international organization or NATO
H-1B	Specialty occupations in fields requiring highly specialized knowledge
H-2A	Temporary agricultural worker
H-2B	Temporary worker performing other services or labor of a temporary or seasonal nature.
H-3	Training in a program not primarily for employment
I	Media, journalist
J	Au pair (exchange visitor) / Exchange visitor / Professor, scholar, teacher (exchange visitor)
K	For U.S. citizen fiancé(e) and spouse for immigration related purposes
L	Intra-company transferee
O	Foreign national with extraordinary ability in Sciences, Arts, Education, Business or Athletics
P1A/B/C	P1A = Internationally Recognized Athlete/ P1B = Member of an Internationally Recognized Entertainment Group / P2 = Individual Performer or Part of a Group Entering to Perform Under a Reciprocal Exchange Program / P-3 = Artist or Entertainer Coming to Be Part of a Culturally Unique Program
Q	International cultural exchange visitor
R	Religious worker
S	Informant
T	Victim of Human Trafficking
TN/TD	NAFTA professional worker: Mexico, Canada
U	Victim of Criminal Activity