Question: Are Douglas Sirk and Gregory Hoblit both American film directors?

Context articles: Gregory Hoblit
Douglas Sirk
Woman's film
Mystery Submarine (1950 film)
Milo Harbich
Shockproof
Imitation of Life (1959 film)
Magnificent Obsession (1954 film)
Schlußakkord
Personal Column (film)

Gregory King Hoblit (born November 27, 1944) is an American film director, television director and television producer.
 He is known for directing the critically acclaimed films "Primal Fear", "Frequency" and "Fracture".
 He has won nine Primetime Emmy Awards for directing and producing "Hill Street Blues", "NYPD Blue", "L.A. Law", "Hooperman" and the television film "Roe vs. Wade".
Douglas Sirk (born Hans Detlef Sierck; 26 April 1897 – 14 January 1987) was a German film director best known for his work in Hollywood melodramas of the 1950s.
The woman's film is a film genre which includes women-centered narratives, female protagonists and is designed to appeal to a female audience.
 Woman's films usually portray "women's concerns" such as problems revolving around domestic life, the family, motherhood, self-sacrifice, and romance.
 These films were produced from the silent era through the 1950s and early 1960s, but were most popular in the 1930s and 1940s, reaching their zenith during World War II.
 Although Hollywood continued to make films characterized by some of the elements of the traditional woman's film in the second half of the 20th century, the term itself disappeared in the 1960s.
 The work of directors George Cukor, Douglas Sirk, Max Ophüls, and Josef von Sternberg has been associated with the woman's film genre.
 Joan Crawford, Bette Davis, and Barbara Stanwyck were some of the genre's most prolific stars.
Mystery Submarine is a 1950 American war film directed by Douglas Sirk starring Macdonald Carey, Märta Torén and Robert Douglas.
Milo Harbich (13 August 1900 – 13 September 1988) was a Brazilian-born German film editor and director.
 He was born to Austrian-Brazilian parents who moved to Dresden when he was a small child.
 He began career as stage actor, but by the early 1930s was increasingly involved with the German film industry.
 He edited his first film in 1933.
 During the Nazi era he worked on a mixture of propaganda films and less overtly political entertainment such as "To New Shores" (1937) and the Marika Rökk vehicle "Hello Janine!
" (1939).
 He often worked with the directors Douglas Sirk and "Hans Steinhoff".
Shockproof is a 1949 American film noir directed by Douglas Sirk and starring Cornel Wilde and Patricia Knight.
 Wilde and Knight were husband and wife during filming.
 They divorced in 1951.
Imitation of Life is a 1959 American romantic drama film directed by Douglas Sirk, produced by Ross Hunter and released by Universal International, starring Lana Turner and John Gavin.
 It was Sirk's final Hollywood film and dealt with issues of race, class and gender.
Magnificent Obsession is a 1954 Technicolor drama romantic film directed by Douglas Sirk starring Jane Wyman and Rock Hudson.
 The screenplay was written by Robert Blees and Wells Root, after the 1929 book "Magnificent Obsession" by Lloyd C. Douglas.
 The film was produced by Ross Hunter.
 Sirk sometimes claimed that the story was based distantly on the Greek legend of Alcestis.
Schlußakkord ("Final Accord" or better "Final Chord"; sometimes anglicised Schlussakkord) is a German film melodrama of the Nazi period, the first melodrama directed by Detlef Sierck, who later had a career in Hollywood as Douglas Sirk and specialised in melodramas.
 It was made under contract for Universum Film AG (UFA), stars Lil Dagover and Willy Birgel and also features Maria von Tasnady, and premièred in 1936.
 It shows stylistic features later developed by Sierck/Sirk and makes symbolic and thematic use of music.
Personal Column (French: "Pièges" ) is a 1939 French drama film directed by Robert Siodmak and starring Maurice Chevalier, Pierre Renoir, Marie Déa and Erich von Stroheim.
 The film's sets were designed by the art directors Maurice Colasson and Georges Wakhévitch. "
Lured", an American re-make, directed by Douglas Sirk and starring Lucille Ball, was released in 1947.