Do I need to prove that I'm still a student?
If you are an F-1 student we need a status letter from your school identifying you as such.
Do I still need to keep my immigration documents?
Yes in order to prove your immigration status you must show us your current U.S. immigration document consisting of either:Form I-551 Lawful Permanent Resident CardMachine Readable Immigrant VisaI-766 Employment Authorization Document , EAD , work permit