Born in Austria, Arnold Schwarzenegger became a U.S. citizen in 1983, calling the occasion one of the greatest days of his life.
Liam Neeson became a U.S. citizen in 2009, saying he’s still an Irishman, but proud to be an American citizen.
Charlize Theron, from South Africa, obtained her U.S. citizenship in 2007. She said it’s nice feeling like she is actually home when she's in America.
Michael J. Fox was born in Alberta Canada and became a U.S. citizen in 2000.
Born in Wales, Anthony Hopkins became a U.S. citizen in 2000. He celebrated by taking a 3,000-mile cross-country road trip.
Natalie Portman was born in Jerusalem and moved to America with her family when she was 3 years old. She carries dual American and Israeli citizenship.
Jim Carrey is proud to be a Canadian, but became a U.S. Citizen in 2004.
Peirce Brosnan says his heart and soul will forever be Irish, but he found a new life and identity becoming a U.S. citizen in 2004.
Born in Columbia, Sofia Vergara revealed in 2014 that she recently aced her citizenship test with a perfect score.
Outspoken animal rights activist Pamela Anderson has dual Canadian and U.S. citizenship. She became a U.S. citizen in 2004 so she could lobby for PETA.
