(It looks like a person is going to have to provide proof of their social security number as part of the proof of their identity for a driver's license.)
 
Fears Of National ID With Driver's Licenses
http://www.worldnetdaily.com/news/article.asp?ARTICLE_ID=40657
 
Republican David Dreier Introduces National ID Card Legislation
http://www.prisonplanet.com/articles/september2004/270904idcardlegislation.htm
 
House GOP 9/11 Police State Bill Has Backdoor National IDs
http://www.prisonplanet.com/articles/september2004/270904backdoorids.htm