My OPT start date is August 21st and my current OPT status is that my EAD card is being produced. I guess they will issue and send it soon to the US mailing address I provided. However, I will be traveling abroad for a while and will only come back to the US on August 17 (4 days before my start date). I was wondering if I could enter the US without my EAD card? It's complicated to get a hold of it abroad, as I will be changing cities every 3 days! I know I'll need to carry my passport and I-20 (with signature of less than 6 months) anyways. Thanks for your help!