Its simple amazing.
Its simple amazing.
And regardless, if you do want a national US ID, you just get a passport, and it'll be accepted as a form of ID everywhere a state-issued driver's license or state ID is accepted. Of course, in this case it's technically voluntary, and many Americans don't travel internationally and don't bother to get a passport.
Because there is no official national ID system, you can do virtually everything Federally with a stack of affidavits and pretty thin "evidence" that you are who you claim to be. They strongly prefer that you have something resembling ID but it isn't strictly required. This also creates a national ID bootstrapping problem insofar as millions of Americans don't have proof that they are Americans because there was never a requirement of having documentary evidence. As a consequence, government processes are forgiving of people that have no "real" identification documents because so many people have fallen through the cracks historically.
Of course, this has been widely abused historically, so the US government has relatively sophisticated methods for "duck typing" identities by inference these days.