There is no definitive answer to this question. Gu Kailai, the wife of disgraced Chinese politician Bo Xilai, renounced her U.S. citizenship in 2011, but it's not clear whether she did so voluntarily or under duress from the Chinese government. If Gu did give up her American citizenship willingly, it would be a highly unusual act for a high-profile Chinese citizen; most rich and powerful people in China maintain dual citizenship as a hedge against political instability and potential exile.