The countries of origin of most illegal immigrants are as below. Foreigners of national of these countries will have additional requirements to have student (D2), general training (D4), and entertainment (E6-2) visa. A minor student's parents who want family visitor (F1) visa will have additional financial requirements.
- Ghana
- Nigeria
- Nepal
- Mongolia
- Myanmar
- Bangladesh
- Vietnam
- Sri Lanka
- Uzbekistan
- Ukraine
- Iran
- India
- Indonesia
- China
- Kazakhstan
- Kyrgyzstan
- Thailand
- Pakistan
- Philippines
- Egypt
- Peru