Claim: Alfred Hitchcock became a U.S. citizen in 1955 in order to receive funding for his film Vertigo.
Evidence: His 1929 film , Blackmail , is often cited as the first British sound feature film , while Rear Window -LRB- 1954 -RRB- , Vertigo -LRB- 1958 -RRB- , North by Northwest -LRB- 1959 -RRB- , and Psycho -LRB- 1960 -RRB- are regularly ranked among the greatest films of all time.
Vertigo is a 1958 American film noir psychological thriller film directed and produced by Alfred Hitchcock.