I don't think it's an executive order:
Phoenix, U.S., January 14, 2003 (EFE)- The governor of Arizona promised visiting Mexican lawmakers that she would sign legislation that would allow undocumented immigrants in that state to obtain driver's licenses.
I should have been a little clearer. The governor has signed a slew of executive orders and I hope that many will question this at all levels. Maybe Hannity, Savage or even Rush could dig into this.