Could anyone help me with immigration/visa issue coming INTO the USA?

[SemiHollowCarrot]

Hi!

 

My spouse is Chinese and we are working through the paperwork and so far so good.  We have the health check, immigration form, personal finance form (and meet the requirements), two biographical forms, etc etc.  My question and our problem is this.  My spouse's OPT does not expire until one year from now, but the driver's license has.  We have mailed off the form and payment and are waiting to get a work permit to allow employment while waiting for a green card.  The DMV gave us a code to give to my spouse's sponsor at the University, who in turn gave us an I-20, but we've been told the I-20 is not enough by the DMV.

 

So far this is the only problem we've encountered and do not want to risk an expired license problems.

 

If anyone could help, I'd appreciate it very much.  If anyone could point me in the right direction, I would also appreciate it very much!  Any other tips/help is also greatly welcomed. Thank you!