And yet you edited out the very part where I pointed out that I DID NOT NEED TO CARRY ID when a medical emergency happened. I was not driving, buying alcohol, renting a room, etc. etc. Americans choose to carry ID when it's useful. I do, of course, most of the time. I always do when I drive, because it's legally required. But my wife does not when she is not driving. Why should she? We don't carry it when we're out on bicycles, or skiiing, or walking around. Why should we? We're Americans. Unless we're suspected of a sppecific crime, we expect not to be treated as generic criminals.
Of course, it's convenient, and even necessary to carry ID much of the time. But even for those occasions, with the exception of driving, the use of an ID is not to satisfy the non-specific suspicions of government officials. It's to do other things for which ID is needed or useful. Whether I'm carrying it or not, no government official has the right to demand spontaneously that I have it or show it, and when they do have the right to demand some ID such as a license, they have no right to demand anything else. I do not have to carry a birth certificate, a passport, or a social security card, or anything but my license when I drive.
When we fly, we need a passport or an enhanced driver's license. But we do not need to document them. We do not need to produce a birth certificate or other evidence that those documents are correct.
Quite simply, I think that if you're not being arrested for a crime, it is unamerican to be treated as a criminal. I'd contend that it's at least close to that if you're being arrested for a routine offense, to be treated as a criminal suspect for another. I know that as a white, anglo, middle aged man, the few times I've been arrested for speeding no cop ever asked for proof of my identity or citizenship, and that is as it should be for everyone. Of course in so doing there's the likelihood that some illegals will get a pass, but the alternative is, in my mind, worse.