Immigration Glossary
Plain-language definitions for the terms, forms, and acronyms you'll run into — no legal jargon, just what they actually mean.
A
Alien's Change of Address (AR-11)
FormsThe free form (or online form) used to notify USCIS whenever you move. You're legally required to file this within 10 days of a change of address.
Application for Certificate of Citizenship (N-600)
FormsUsed to get proof of citizenship for someone who became a U.S. citizen automatically, usually through a parent, rather than through naturalization.
Application for Employment Authorization (I-765)
FormsThe form used to request a work permit (EAD).
Full guide to Form I-765Application for Naturalization (N-400)
FormsThe form used to apply to become a U.S. citizen, typically after holding a green card for the required number of years.
Full guide to Form N-400Application for Travel Document (I-131)
FormsThe form used to request Advance Parole or a re-entry permit.
Full guide to Form I-131Application to Register Permanent Residence or Adjust Status (I-485)
FormsThe form used to apply for a green card from inside the United States, without having to leave for a visa interview abroad.
Full guide to Form I-485Application to Replace Permanent Resident Card (I-90)
FormsUsed to renew an expiring green card or replace one that's lost, stolen, or damaged.
I
Immigrant Petition for Alien Worker (I-140)
FormsFiled by (or on behalf of) an employer to petition for a foreign worker to get an employment-based green card.
P
Petition for a Nonimmigrant Worker (I-129)
FormsUsed by employers to petition for temporary foreign workers in categories like H-1B, L-1, and O-1.
Petition for Alien Relative (I-130)
FormsThe form a U.S. citizen or permanent resident files to establish a qualifying family relationship with a relative who wants to immigrate.
Full guide to Form I-130Petition for Fiancé(e) (I-129F)
FormsFiled by a U.S. citizen to bring their foreign fiancé(e) to the U.S. on a K-1 visa so they can get married within 90 days of arrival.
Full guide to Form I-129FPetition to Remove Conditions on Residence (I-751)
FormsFiled by a conditional permanent resident (usually from a marriage under 2 years old at green card approval) to convert a 2-year conditional card into a full 10-year one.
Full guide to Form I-751