Question: Were Robert Longo and Stuart Rosenberg both American?

Context articles: Stuart Rosenberg
G. Roger Denson
WUSA (film)
Let's Get Harry
Brubaker
FIRE (Maltese band)
Michael H. Shamberg
Murder, Inc. (film)
Robert Longo
Nancy Dwyer

Stuart Rosenberg (August 11, 1927 – March 15, 2007) was an American film and television director whose motion pictures include "Cool Hand Luke" (1967), "Voyage of the Damned" (1976), "The Amityville Horror" (1979), and "The Pope of Greenwich Village" (1984).
 He was noted for his work with actor Paul Newman.
G. Roger Denson (born 1956) is an American journalist, cultural and art critic, theoretician, novelist and curator.
 A regular contributor to "The Huffington Post", his writings have also appeared in such international publications as "Art in America", "Parkett", "Artscribe International", "Flash Art", "Cultural Politics", "Bijutsu Techo", "Kunstlerhaus Bethanien", "Artbyte", "Art Experience", "Arts Magazine", "Contemporanea", "Tema Celeste", "M/E/A/N/I/N/G", "Trans>Arts, Culture,Media", and "Journal of Contemporary Art".
 He has published criticism and commentary on such international artists as Terrence Malick, Kathryn Bigelow, Hiroshi Sugimoto, Sigmar Polke, Andres Serrano, Yvonne Rainer, Carrie Mae Weems, Catherine Opie, Sarah Charlesworth, Cindy Sherman, Jack Smith, Philip Taaffe, Pat Steir, Shirin Neshat, Marilyn Minter, Renée Green, John Miller, Lorna Simpson, Robert Longo, Ashley Bickerton, Hunter Reynolds, Kathe Burkhart, Tishan Hsu, Liz Larner, Gilbert and George, Barbara Ess, Robert Ryman, Dan Flavin, General Idea, Lydia Dona, Maura Sheehan, Jimmy De Sana, Dan Graham and Richard Artschwager, Wael Shawky, Shazia Sikander, Jim Shaw (artist), Louise Bourgeois, Robert Gober, Vasudeo S. Gaitonde, Gego, Nasreen Mohamedi, Kurt Hentschläger,
WUSA is a 1970 American drama film, directed by Stuart Rosenberg.
 It was written by Robert Stone, based on his novel "A Hall of Mirrors".
 The story involves a radio station in New Orleans with the eponymous call sign which is apparently involved in a right-wing conspiracy.
 It culminates with a riot and stampede at a patriotic pep-rally when an assassin on a catwalk opens fire.
Let's Get Harry is a 1986 action film directed by Stuart Rosenberg.
 It stars Thomas F. Wilson, Michael Schoeffling, Glenn Frey, Rick Rossovich, Mark Harmon, Robert Duvall and Gary Busey.
 Rosenberg chose to credit the film to Alan Smithee, a pseudonym used by directors who repudiate their involvement in a film.
Brubaker is a 1980 American prison drama film directed by Stuart Rosenberg.
 It stars Robert Redford as newly arrived prison warden Henry Brubaker, who attempts to clean up a corrupt and violent penal system.
 The screenplay by W.D. Richter is a fictionalized version of the 1969 book, "Accomplices to the Crime: The Arkansas Prison Scandal" by Tom Murton and Joe Hyams, detailing Murton's uncovering of the 1967 prison scandal.
FIRE is a rock band from Malta.
 Founded in 1998, the band's line-up includes vocalist Kenneth Calleja, guitarists Joe Vella and Robert Longo, bassist Trevor Catania and drummer Robert Spiteri.
 The band has released three albums, which have received favorable reviews.
Michael H. Shamberg (October 27, 1952 – November 1, 2014) was an American music video producer and filmmaker known for his work with the British band, New Order.
 Shamberg, who was closely associated with Factory Records and New Order throughout his career, was responsible for producing some of the band's best known music videos, including "True Faith" and "Blue Monday".
 Shamberg's producing credits included the 1987 music video for "True Faith", which was nominated for "Best Music Video" at the 1988 Brit Awards.
 Shamberg also worked on music videos featuring numerous other musical artists, including Talking Heads, The B-52's, R.E.M., Patti Smith and Grace Jones.
 His music video production credits included videos directed by Kathryn Bigelow, Jonathan Demme, Robert Frank, Robert Longo, and William Wegman.
Murder, Inc. is a 1960 American gangster film starring Stuart Whitman, May Britt, Henry Morgan, Peter Falk, and Simon Oakland.
 The Cinemascope movie was directed by Burt Balaban and Stuart Rosenberg.
 The screenplay was based on the true story of Murder, Inc., a Brooklyn gang that operated in the 1930s.
Robert Longo (born January 7, 1953) is an American painter and sculptor.
 Longo became a rising star in the 1980s for his "Men in the Cities" series, which depicted sharply dressed men and women writhing in contorted emotion.
Nancy Dwyer (born 1954) is an American contemporary artist whose works include paintings, works on paper, public art, word sculpture and furniture art.
 Her work has been exhibited widely at venues including the Whitney Museum of American Art, the Museum of Contemporary Art, Los Angeles, the Contemporary Arts Museum in Houston, the New Museum in New York and many others.
 Her work was included in the 2009 exhibition “The Pictures Generation” (of which she is considered to be a member) at the Metropolitan Museum of Art in New York, alongside the work of her peers and contemporaries, including Cindy Sherman and Robert Longo, with whom she cofounded Hallwalls in Buffalo, New York in 1974, as well as work by Barbara Kruger, Richard Prince, John Baldessari, Louise Lawler and Sherrie Levine, among others.