Originally Posted by Marshal

One more update: IE - Ireland added.

So, the complete list should be:
Countries (ISO 3166-1 codes):GB,FR,DE,IT,IE
U.S. States (2-letter abbreviations): LA,AR,VA,UT,MT,TX,NC,IN,ID,FL,KY,NE,GA,AL,KS,OK,MS ,SC,TN,SD,WY,MO,ND