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Immigration Acronyms

Acronym Explanation
AAO Administrative Appeals Office
AC21 American Competitiveness in the Twenty First Century Act
A Number Alien Number
AOS Adjustment of Status
CBP (US) Customs and Border Protection
CIS (US) Citizenship and Immigration Services (USCIS)
COS Change of Status (or C/S)
CPT Curricular Practical Training
CSC California Service Center
DHS Department of Homeland Security
DOS Department of State
DOL Department of Labor
D/S Duration of Status
EAD Employment Authorization Document
EB-1, EB-2, EB-3 First Preference (EB-1), Second Preference (EB-2), Third Preference (EB-3)
EAD Employment Authorization Document
EOS Extension of Stay (E/S)
EVL Employment Verification Letter
E-3 Non-immigrant work visa for Australian citizens
E-3D Dependent of an E-3 visa holder
F-1 Student Visa
OPT F-1 Optional Practical Training
GC Green Card
H-1B Non-Immigrant Work Visa
H-4 Dependent of H-1B visa holder
I-765 Form Employment Authorization Document Application
I-129 H-1B Petition Form
ICE (US) Immigration and Customs Enforcement
IGA Interested Government Agency
I-140 Immigrant Petition for Alien Worker
J-1 Exchange Visitor Visa
LCA Labor Condition Application
LPR Lawful Permanent Resident
NAFTA North American Free Trade Agreement
NIV Nonimmigrant Visa
NIW National Interest Waiver
NOID Notice of Intent to Deny
NSC Nebraska Service Center
O-1 Non-immigrant work visa for an Individual of Extraordinary Ability or Achievement
O-3 Dependent of an O-1 visa holder
O*NET Occupational Information Network
PR Permanent Resident
PERM Program Electronic Review Management
POE Port of Entry
PP Premium Processing
RFE Request for Evidence
SEVIS Student and Exchange Visitor Information System
TN Non-immigrant work visa for Canadian and Mexican citizens
TSC Texas Service Center
VSC Vermont Service Center
VWP Visa Waiver Program