Question: Ralph Ince and Mitchell Leisen were both American what?

Context paragraphs:
Blue Smoke (1935 film): Blue Smoke is a 1935 British sports film directed by Ralph Ince and starring Tamara Desni, Ralph Ince and Bruce Seton.  It was made at Wembley Studios by the British subsidiary of the Fox Film Company.

Easy Living (song): "Easy Living" (1937) is a jazz standard written by Ralph Rainger and Leo Robin for the film "Easy Living" directed by Mitchell Leisen.

John Ince (actor): John Ince, also known as John E. Ince, (August 29, 1878 – April 10, 1947) was an American stage and motion pictures actor, a film director, and the eldest brother of Thomas H. Ince and Ralph Ince.

Murder at the Vanities: Murder at the Vanities is a 1934 American Pre-Code musical film based on the 1933 Broadway musical with music by Victor Young.  It was released by Paramount Pictures.  It was directed by Mitchell Leisen, stars Victor McLaglen, Carl Brisson, Jack Oakie, Kitty Carlisle, Gertrude Michael, Toby Wing, and Jessie Ralph.  Duke Ellington and his Orchestra are featured in the elaborate finale number.

Ralph Ince: Ralph Ince (January 16, 1887 – April 10, 1937) was an American pioneer film actor, director and screenwriter whose career began near the dawn of the silent film era.  Ralph Ince was the brother of John Ince and Thomas H. Ince.

Mitchell Leisen: Mitchell Leisen (October 6, 1898 – October 28, 1972) was an American director, art director, and costume designer.

The Big Broadcast of 1938: The Big Broadcast of 1938 is a Paramount Pictures musical film featuring W.C. Fields and Bob Hope.  Directed by Mitchell Leisen, the film is the last in a series of "Big Broadcast" movies that were variety show anthologies.  This film featured the debut of Hope's signature song, "Thanks for the Memory" by Ralph Rainger.

Darling, How Could You!: Darling, How Could You!  (1951) is a comedy film directed by Mitchell Leisen and starring Joan Fontaine and John Lund.  The script is based on the James Barrie play "Alice Sit-by-the-Fire".  The film was directed by Mitchell Leisen.

Men of America: Men of America is a 1932 American Pre-Code Western film directed by Ralph Ince and written by Samuel Ornitz and Jack Jungmeyer.  The film stars William Boyd, Charles "Chic" Sale, Dorothy Wilson, Ralph Ince and Henry Armetta.  The film was released on November 25, 1932, by RKO Pictures.

Hands Across the Table: Hands Across the Table is a 1935 American romantic screwball comedy film directed by Mitchell Leisen and released by Paramount Pictures.  It stars Carole Lombard as a manicurist looking for a rich husband and Fred MacMurray as a poor playboy, with Ralph Bellamy as a wealthy but handicapped ex-pilot.  The teaming of Lombard and MacMurray was so well received, they went on to make three more films together, "The Princess Comes Across" (1936), "Swing High, Swing Low" (1937), and "True Confession" (1937).

Supporting paragraphs: Ralph Ince Mitchell Leisen
Answer: director