>However, to allay anyone's privacy concern, some suggestions have been made as to a compromise resolution: the voter keeps the unique ballot ID receipt tab (as we already do in my state), so the ballot is traceable from the voter's end only - but no election record is kept of the ballot ID tied to a voter.
>
>That could be done at a national level, and perhaps individual states could retain the right to track (or not track) ballots systematically as they see fit, as is now done in the current state-by-state system.

I think not. I've now checked the constitutions of 25 states. 19 of them have secrecy guarantees. For 5, I couldn't find anything definitive and 1 (Texas) specifically requires traceability.

Tamar