The map data is stored as Tableau Data Sources. Just open C:\Program Files\Tableau\Tableau 7.0\Local\data\state.tds (or C:\Program Files (x86)\Tableau\Tableau 7.0\Local\data\state.tds on a 64-bit machine) and you can browse the geocoding data. You'll want the State/Province field.
We do update this data in many maintenance releases, so be sure to upgrade to the current one.
Thanks! Really appreciate the quick response.
Additional question -- are the country and state names case-sensitive?