In 1919, Chaplin co-founded the distribution company United Artists , which gave him complete control over his films. His first feature-length was The Kid (1921), followed by A Woman of Paris (1923), The Gold Rush (1925), and The Circus (1928). He refused to move to sound films in the 1930s, instead producing City Lights (1931) and Modern Times (1936) without dialogue. Chaplin became increasingly political, and his next film, The Great Dictator (1940), satirised Adolf Hitler . The 1940s were a decade marked with controversy for Chaplin, and his popularity declined rapidly. He was accused of communist sympathies, while his involvement in a paternity suit and marriages to much younger women caused scandal. An FBI investigation was opened, and Chaplin was forced to leave the United States and settle in Switzerland. He abandoned the Tramp in his later films, which include Monsieur Verdoux (1947), Limelight (1952), A King in New York (1957), and A Countess from Hong Kong (1967).