Abbreviations & Definitions
A
A-2 – Dependents of A-1 visa holders (employees of foreign governments who enter the United States on official business). Dependents of A principals may study in the United States without additional permission, although employment is not possible unless the dependent is granted employment authorization by the USCIS.
ADIS – Arrival Departure Information System – US government data system that interacts with the electronic manifest system to identify out of status individuals.


