[QUOTE=airbus320]"
The problem is that Homeland Security has still not published its detailed proposed rule, which must then be open for public comment and is subject to other legal delays before a final rule can be imposed by the end of the year."
[QUOTE]

Yeh, I'd sure like to know some specifics. But of course, the authorities are still discussing alternative documents to a passport, which MAY be acceptable. I'd be happy knowing what kind of validity they're going to demand for passports (you can use an expired one now).