You could ask Barack Obama that question.
What other country was Obama leader of?
Obama- probably born in Kenya. His childhood was largely spent as a citizen of Indonesia. I would say that there was a possibility of divided loyalties. That question appears now to be moot.
Peculiarly, you could ask that same question of Winston Churchill.
Jerome Avenue, in the Bronx is named after Winston Churchill’s grandfather.
His mother Jenny Jerome married his father, the British subject.
Not terribly unlike Barack Obama, whose American mother married a British subject.