Question: Are both musicians C. J. Ramone and Jessica Jung American?

Context articles: Fly (Jessica song)
Jessica Jung
The Ramainz
The One like You
My Decade
Catch Me If You Can (Girls' Generation song)
Jessica &amp; Krystal
C. J. Ramone
Jessica Jung discography
Wu Chun

"Fly" is a Korean song recorded by South Korean singer Jessica Jung featuring Fabolous, taken from Jessica's debut With Love, J EP.
 It was written by herself, and produced by Eric Fernandez, Karriem Mack.
 It was released digitally by Coridel Entertainment on May 17, 2016 in conjunction with the release of the EP
Jessica Jung (born April 18, 1989), known professionally as Jessica, is an American singer, songwriter, actress, model, fashion designer, and businesswoman currently based in South Korea.
 Jung was born and raised in San Francisco, California.
 At the age of eleven, she was discovered by South Korean entertainment agency S.M. Entertainment and subsequently moved to South Korea.
 In 2007, Jung debuted as a member of the South Korean girl group Girls' Generation.
 The group later became one of the best-selling artists in South Korea, and one of South Korea's most popular girl groups nationwide and worldwide.
The Ramainz were a U.S. tribute band to the Ramones.
 Its members included Dee Dee Ramone, Marky Ramone, Dee Dee's wife Barbara Zampini (also known as Barbara Ramone) and C. J. Ramone.
 They were known as The Remains until 1999 but had to change the spelling due to another band already using the name.
 They released one live album entitled "Live in N.Y.C." on 8 October 2002, four months after Dee Dee Ramone's death on 5 June.
"The One Like You" (; also translated as "That One Person Is You") is a ballade song performed by Korean American artist Jessica Jung, member of the girl group Girls' Generation.
My Decade is the third extended play by South Korea-based American singer Jessica Jung.
 It was released on August 9, 2017, by Coridel Entertainment, and celebrates her 10th anniversary as a singer.
 It consists of 6 songs, including the previously released single "It's Spring" and the title track "Summer Storm".
"Catch Me If You Can" is a song recorded in two languages (Japanese and Korean) by South Korean girl group Girls' Generation.
 The Korean version was released by S.M. Entertainment and KT Music on April 10, 2015, while the Japanese version was released on April 22 by EMI and Universal Music Japan.
 The song was composed by Erik Lidbom and Jin Choi, with the Korean lyrics written by Mafly and Choe A-Leum, and the Japanese lyrics written by Junji Ishiwatari and Jeff Miyahara.
 Musically, it was described by critics as an EDM track.
 The song marked the first release of Girls' Generation as an eight-member group following the dismissal of member Jessica Jung in September 2014.
Jessica & Krystal is an OnStyle variety TV show starring Korean American sisters Jessica Jung, former member of Girls' Generation and Krystal Jung of f(x).
Christopher Joseph Ward (born October 8, 1965), better known as C. J. Ramone, is an American musician best known for working as the bassist, backing and occasional lead vocalist of the punk rock group the Ramones from 1989 to 1996.
 He is one of the three surviving members of the Ramones, along with two of their drummers Marky Ramone and Richie Ramone.
Jessica Jung is an American singer, songwriter, actress, model, fashion designer, and businesswoman currently based in South Korea.
 Her discography currently consists of two extended plays and five singles.
 Her debut extended play, "With Love, J" peaked atop the Gaon Album Chart and spawned the top-ten single "Fly" featuring Fabolous.
 The follow-up EP "Wonderland" also charted atop the chart.
Wu Chun (born 10 October 1979 Goh Kiat Chun) is a Bruneian actor, singer, and model.
 He was a member of Fahrenheit, a Taiwanese Mandopop vocal quartet boy band, from its debut in 2005 to June 2011 singing bass.
 Wu Chun has appeared Taiwanese dramas, such as "Tokyo Juliet" (2006), "Hanazakarino Kimitachihe" (2006), "Romantic Princess" (2007), "Hot Shot" (2008), "Sunshine Angel" (2011), and Kindaichi Case Files (2012-2013).
 In 2014, he appeared in the reality television program, "Dad is Back" with his daughter, Nei Nei.
 His film appearances include "The Butterfly Lovers" (2008), "Lady of the Dynasty" (2014), "NEST 3D", with Li Bingbing and Kellan Lutz (English); and "My Other Home", with Stephon Marbury and Jessica Jung (English).
 In 2016, he was cast in the Chinese drama, "Martial Universe".
 As a model, Wu Chun has appeared in magazines, such as "Esquire", "Elle" for "Men, Men's Health Magazine, Harper's BAZAAR Magazine," "GQ," and "Reader's Digest".
 Wu Chun is a business owner in the Brunei fitness and health industry.
 His businesses include Bake Culture (Taiwan based artisan bakery), The Energy Kitchen (creativity healthy gourmet), Fitness Zone (largest and biggest health club in Brunei since 2003), and WoMen Hair Salon (team of professionals for international celebrities).
 In China, he is the director of TV commercial advertisements for InterContinental Hotel.
 Wu Chun has a number of commercial and charitable endorsements.