If USPS is responsible for the lost card, you will need to obtain an official letter on letterhead from USPS stating this. If approved, USCIS will then issue a new replacement EAD at no additional ...

A: If USCIS has approved your OPT you will be expected to have your EAD in hand to re-enter the United States, in addition to your Form I-20, valid passport and visa, and a letter of employment if you ...