My question involves unemployment benefits for the state of: IL

Quick facts about me:

I was working for the company since June 2009 till Septemeber 30, 2010-my working permit obtained based on provisions of OPT/I20. My employer decided to sponsor me for H1B and filed application in April 2010. USCIS send us RFE letter, requesting more evidence. My status still pending with them, don't have any current employemnt authorization. Can I file for unemployement insurance in IL while my Employer resolves the issue with USCIS?