I agree with Amos. For questionable benefits the possibilities for abuse are ominous.

There is already a movement in Congress to limit the use of personal information collected by businesses.

What happens when a national ID card is required to be used routinely (else why have one) and the information collected is fed into a central database. And stays there.

The temptation to use the information for anything from the war on drugs to profiling to catching underage drinking would be a powerful one. And not to be used in Court but used unofficially to figure out who to put under surveillance for various crimes having nothing to do with terroism.

Regards

John