Stuff it, Schwarzenegger.
If we can't keep them out of the country, for God's sake keep them out of the voting booth. A color coded driver's license could be a good start on that.
The small-l libertarian in me says a drivers license is like a fishing license - it should be a matter of no consequence to get one.
So either a driver's license should no longer be a valid ID, or it should be clearly coded to prevent misuse as an ID.