Explained

US immigration, explained

A to Z

The words it runs on

Adjustment of status
Becoming a permanent resident from inside the United States without leaving, on Form I-485.
Advance parole
Permission to travel while an application is pending without abandoning it.
Affidavit of support
Form I-864, a binding promise by a sponsor to support a family immigrant above the poverty line.
Cap-exempt
Employers (universities, non-profit research organisations) whose H-1B petitions are not counted against the annual cap.
Consular processing
Getting an immigrant visa at a US consulate abroad, then entering as a permanent resident.
CPT
Curricular Practical Training: work that is part of the curriculum, authorised by the school's designated official before graduation.
Current
A category and country with no wait in the Visa Bulletin: a visa number is available now.
Derivative
A spouse or unmarried child under 21 who gets status through the principal applicant.
DSO
Designated School Official: the person at a certified school who signs the I-20, updates SEVIS and recommends OPT and CPT.
Duration of status (D/S)
How F-1 and J-1 admissions are recorded on the I-94: no fixed end date, as long as the student or exchange visitor keeps status.
EAD
Employment Authorization Document, the work permit card, Form I-766.
Form I-20
The certificate of eligibility a SEVP-certified school issues to an admitted F-1 student; needed for the visa, for entry, and kept current for the whole stay.
I-94
The arrival record that shows your status and the date it expires; retrievable online from CBP.
Inadmissibility
Grounds that bar entry or a green card (certain crimes, prior violations, health, public charge), some of which can be waived.
Labor certification (PERM)
The Department of Labor's test that no qualified US worker is available, required for most EB-2 and EB-3 green cards.
Naturalization
Becoming a US citizen, on Form N-400, after the required years as a permanent resident.
NOID
Notice of Intent to Deny: USCIS says it plans to deny unless you rebut, within a short window.
OPT and STEM OPT
Optional Practical Training: up to 12 months of work in the field of study after an F-1 degree, with a further 24 months for STEM graduates at an E-Verify employer.
Premium processing
An extra fee for a decision within 15 or 45 business days on eligible petitions.
Priority date
The date your petition (or labor certification) was filed; your place in line when a category has a wait.
Removal proceedings
Immigration court proceedings that can end in an order of removal; defenses include asylum and cancellation of removal.
RFE
Request for Evidence: USCIS asking for more before deciding. Not a denial, but the response deadline is strict.
SEVP and SEVIS
The Student and Exchange Visitor Program, run by ICE, certifies the schools that may enroll F-1 and M-1 students, and SEVIS is its database: every student's record, status and Form I-20 lives there, and a school's designated official updates it.
Unlawful presence
Time in the US without status after age 18; more than 180 days or 1 year triggers 3- or 10-year bars on leaving.
USCIS, DOS, CBP, ICE, EOIR
The agencies: Citizenship and Immigration Services (petitions), State (visas abroad), Customs and Border Protection (entry), Immigration and Customs Enforcement (enforcement), Executive Office for Immigration Review (the courts).
Visa Bulletin
The State Department's monthly table showing which priority dates can proceed, by category and country of birth.