Likely a test mule, either for citroen themselves, thinking of dipping their toes back in the us market, or for another brand looking to market a badge engendered version in north America.
They already have such deals with fiat.
Or, pure speculation, if not fiat, maybe Nissan.. Iirc Citroen's parent corp also owns Peugeot, and, again iirc, Peugeot and Nissan own something like 40%of each other...
Unless my memory is playing tricks...