Morocco (film) agreed to bring the German actress to Hollywood under a two-picture contract, in February 1930. When Dietrich arrived in the United States to begin filming "Morocco" "[she] was subjected to the full power of Paramount's public relations machine" launching her into "international stardom" "before" American moviegoers had seen her as Lola Lola in "The Blue Angel", which appeared in U.S. theatres in 1931. Premiering in New York City on December 6, 1930, "Morocco"s success at the box-office was "immediate and impressive". Accolades for the film were issued by Soviet director Sergei Eisenstein, film critic Robert E. Sherwood and filmmaker Charles
Marlene Dietrich Crawford, Mae West, Katharine Hepburn, Norma Shearer, Dolores del Río and Fred Astaire among others. While she was in London, officials of the Nazi Party approached Dietrich and offered her lucrative contracts, should she agree to return to Germany as a foremost film star in the Third Reich. She refused their offers and applied for US citizenship in 1937. She returned to Paramount to make "Angel" (1937), another romantic comedy directed by Ernst Lubitsch; the film was poorly received, leading Paramount to buy out the remainder of Dietrich's contract. In 1939, with encouragement from Josef von Sternberg, she accepted producer