Not at the moment. But I'm happy to look into "gravity codes" for you. Ping me.
kishore, thanks for the ping. Sorry this took so long to get back to you. Here are the geographies Tableau supports:
The FIPS 10 country codes are different from the ISO ALPHA-2 codes. So the FIPS code for China is CH, while the ISO -ALPHA 2 code is CN. Here's a link the Wiki list of FIPS country codes:
It also explains a bit about the inconsistencies between the two codes.