For the purposes of the application, MIT considers any student who does not hold United States citizenship or permanent residency to be an international applicant, regardless of where they live or attend school.?01 U.S. permanent residents are those students who have an official copy of their green card in hand. If you are in the process of obtaining a green card, then you are considered by MIT to be an international student. If you are a U.S. citizen or permanent resident, then you are considered a domestic applicant.

However, whether you are a domestic applicant or an international applicant does not impact when or how you apply or the financial aid you are offered. 

https://mitadmissions.org/apply/firstyear/international/