mit的定义，有绿卡或公民都不是国际学生。这里有详细说明：

为了保持数据的完整，我将mit的整个学生的构成比例都留下来了。请仔细看链接里的原始数据。

Am I International? 

MIT considers any student who does not hold US citizenship or permanent residency to be an international applicant, regardless of where you live or attend school. US 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 an American citizen or permanent resident, then you are considered a domestic applicant; however, if you have lived for long periods of time outside the United States, some of this information may still be helpful to orient you in the process.

http://mitadmissions.org/apply/international/howto