Possible Clues:

• Former citizen, for short
• One in an ethnic enclave, perhaps
• Person not living in their own country
• Citizen no more
• Abbreviation for someone who has settled abroad
• Exile, in short
• Former statesman's worry about mark of voter power
• European tax originally about 10p per resident abroad
• Former partner, boy or girl, who is not at home
• Brit in America, maybe