Cinema of Argentina because harassment led to the exile of a number of prominent actors, among them Alberto de Mendoza, Arturo García Buhr, Niní Marshall and Libertad Lamarque, whose rivalry with her colleague Eva Duarte turned against her when the latter became First Lady in 1946. Argentine cinema began losing viewership as foreign titles gained an increasing foothold in the Argentine market. The problem eventually became so bad that Argentina tried to curb the influx with the Cinema Law of 1957, establishing the "Instituto Nacional de Cinematografía" to provide education and funding. Among the era's most successful films were: "Historia de una noche,"
First Lady another woman, such as the President's daughter, has filled the duties of First Lady as hostess in the White House, if the President's wife was unwilling, unable, or if the President was a widower or bachelor. Harriet Lane, niece of bachelor President James Buchanan was the first non-spouse to be called First Lady. South Korean President Park Geun-hye has been referred to as First Lady to former President Park Chung-hee, who is her father. The title was bestowed upon her after her mother's assassination. The title was also officially bestowed on Victoria Quirino-Delgado, the daughter of widower Elpidio Quirino (1948–53),