Please help! Thanks a lot in advance for any advice!
I am asked by USCIS to "Please submit proof of your employment authorization in the U.S. from XXXX to XXXX. Such evidence may include copies of Employment authorization documents (forms I-688 or I-766) granted to you by this Service".
This period happened to be in my Curricular Practical Training (CPT)when I did my internship in a local company to satisfy one of my required courses. The employment authorization for this internship was granted in my I-20.
My questions: how my I-20 is related to Form I-688 or I-766? Is I-20 (if this is not Form I-688 or I-766)sufficient to support the proof of my employment authorization?