Just thought I'd share the best argument I've read against a national ID. You don't have a single key on your key ring, because multiple keys keeps an intruder from gaining access to everything with a single thing. The way the system works now, to be able to do everything, you've got to defraud the bureau of vital statistics, the post office, the DMV, the Social Security Administration, the various electoral commissions, and the State Department. At every step, a fraud can be caught. If you have a national ID that's good for everything, and you don't catch them, you've lost your opportunity.