The country select lists that are generated by the checkout wizard should have a value of 'US' for the United States. Is this not the case when you are running the wizard? Please post back and include a copy of the checkout page that was generated that has the incorrect value for the US and also include some info about your os and version of DW that you are working with. This is not an issue that I have seen or been able to reproduce, if eCart is writing any part of any checkout pages incorrectly I would like to have as much specific info as possible so that any potential issue can be corrected.