Question: Trey Parker and Edgar Reitz, are Americans?

Context articles: Home from Home (2013 film)
Zero Hour (1977 film)
Edgar Reitz
Gernot Roll
The Tailor from Ulm
Trey Parker
Thomas Mauch
Trip to Vienna
41st Venice International Film Festival
Noemi Steuer

Home from Home (German: Die andere Heimat – Chronik einer Sehnsucht ) is a 2013 German drama film directed by Edgar Reitz.
 It was screened out of competition at the 70th Venice International Film Festival.
 It is shot in black-and-white, but there are some colour sequences.
 It is a prequel to the "Heimat" film series and concerns the Simon family living in the fictional Hunsrück village of Schabbach from 1840–1844.
Zero Hour (German: Stunde Null ) is a 1977 West German drama film directed by Edgar Reitz, starring Kai Taschner and Anette Jünger.
 The narrative is set in the summer of 1945 in a small village outside Leipzig, where the Americans have just pulled back and been replaced by Soviet troops.
 The film follows the inhabitants as they adjust to the new situation, in particular Joschi, a teenage Hitler Youth member who is fascinated by the Americans.
Edgar Reitz (born 1 November 1932) is a German filmmaker and Professor of Film at the Staatliche Hochschule für Gestaltung (State University of Design) in Karlsruhe.
Gernot Roll (born 9 April 1939) is a German cinematographer.
 Born in Dresden, he collaborated on several films with directors Edgar Reitz and Sönke Wortmann.
The Tailor from Ulm (German: Der Schneider von Ulm ) is a 1979 West German drama film directed by Edgar Reitz of Heimat fame.
 It is the true story of a German pioneer aviator, Albrecht Berblinger, in the late 18th century.
 It was entered into the 11th Moscow International Film Festival.
Randolph Severn "Trey" Parker III (born October 19, 1969) is an American actor, animator, writer, director, producer, singer, and songwriter.
 He is known for co-creating "South Park" (1997–present) along with his creative partner Matt Stone, as well as co-writing and co-directing the Tony Award-winning musical "The Book of Mormon" (2011).
 Parker was interested in film and music as a child, and attended the University of Colorado, Boulder following high school, where he met Stone.
 The two collaborated on various short films, and starred in a feature-length musical, titled "Cannibal!
 The Musical" (1993).
Thomas Mauch (born 4 April 1937) is a German cinematographer and film producer.
 With a career that spans over fifty years in both film and television, Mauch is well known for his numerous collaborations with Edgar Reitz, Alexander Kluge, and Werner Herzog.
Trip to Vienna (German: Die Reise nach Wien) is a 1973 German drama film directed by Edgar Reitz and starring Elke Sommer, Hannelore Elsner and Mario Adorf.
 During the closing months of the Second World War, two small-town German women discover some money in an attic and decide to spend it on a trip to Vienna.
The 41st annual Venice International Film Festival was held from 1 to 11 September 1984 under the direction of Gian Luigi Rondi.
 No Golden Lion for Lifetime Achievement was assigned.
 The main event of this edition was, out of competition, the premiere of "Heimat", an almost 16 hours-long film directed by Edgar Reitz.
 Among the other titles showed out of competition there were Steven Spielberg's "Indiana Jones and the Temple of Doom", Wolfgang Petersen's "The NeverEnding Story" and a restored version of "Metropolis" edited and scored by Giorgio Moroder.
 The retrospective was dedicated to Luis Buñuel.
Noemi Steuer is a Swiss-born actress (Basel, January 15, 1957), notable for her role as Helga Aufschrey, in Edgar Reitz's film/TV series "Die Zweite Heimat" (1993).