Schneier makes a pretty good argument for giving drivers licenses to illegal immigrants.
In reality, we are a much more secure nation if we do issue driver's licenses and/or state IDs to every resident who applies, regardless of immigration status. Issuing them doesn't make us any less secure, and refusing puts us at risk.
Prior to reading this argument, I would have told you that I'm against issuing licenses to illegal immigrants. Now, I'm not so sure.
Something to think about, anyway.