The Institute of Governmental Studies at the University of California at Berkeley, in a Sep. 2005 study titled "Driver's Licenses For Undocumented Aliens," offered:

“Those who favor licenses for illegal immigrants say that licenses provide more information about who is living in any given community, help undocumented residents better understand driving laws and road rules, help keep bad drivers off the road and improve our national security. Those who oppose licenses say giving undocumented immigrants driver’s licenses offers government approval of their illegal immigration status which could lead to even further immigration in the future. They also claim that national security is at risk if undocumented immigrants are allowed such licenses.”

Sep. 2005