Along with the I-94 card, the eligibility document must be kept valid at all times while in the U.S. to avoid losing legal status. The eligibility document enables a foreign national to apply for a particular visa at a U.S. consulate abroad and for entry into the U.S.
| Visa | Description | Eligibility Document |
| F | Full-time student in academic program | I-20 |
| J | Full-time student, professor, researcher or short-term scholar | DS-2019 |
| H-1B | Worker in Specialty Occupation | I-797A/B |
| TN | For Canadians and Mexicans (Trade NAFTA) | Letter of Employment |
| O-1 | Alien of Extraordinary Ability | I-797A/B |
| B-1 | Visitor for Business | Letter describing activities |
| WB | VWP Visitor for Business | Letter describing activities |