To those who ask whether a Federal ID is constitutional, no ID of any kind is mentioned in the in the Constitution, not passports or anything else. It was never intended that the Constitution should be our only laws or that the Constitution should be an inflexible document written in stone. The framers did put a provision in for amending the Constitution. They must have figured it would be used. As to the Issue of a Federal ID Card - When the issue of ID's were first needed, this country and the world in general were a much bigger place. It took days to travel across the country and sometimes weeks to travel around the world. Today, in a matter of hours you can be clear across the country and a few hours more can put you half way around the world.In this era of Global Terrorism, a global economy and the like, it only seems rational to have at least a NATIONAL ID.