Michelle Wie was born in Honolulu, so she is an American citizen. Her parents immigrated to Hawaii from South Korea before she was born.
Maria Sharapova was born in Siberia, moved to France when she was two (the family moved to get away from the Chernobyl nuclear spill disaster), and moved to Florida at age 6 to receive training as a tennis player. Although she has lived in the U.S. for most of her life, she remains a fierce Russian patriot and has no plans to become an American citizen.