Country code on non-Australian state

Question

In the CommonSimpleAddress, when the Country code is not provided, the default is AUS.

For the field State, when the country code is AUS, the states expected are: NSW, QLD, VIC, NT, WA, SA, TAS, ACT, AAT

When the data holder does not have a country code, the state is provided and the state is not an Australian State, can the country code be left blank, or should it default to AUS?

For example:
Country Code = blank
State = Texas

Answer

If the country code is AUS, whether specifically or by default, then it would be non-conformant to specify a non-Australian state.
 
If the state is "Texas" it would probably be better to set the country code to USA.