In an interview on Trio's series Face Time (2002), Producer Peter Guber revealed that Shampoo (1975) was only made because its creators insisted on it being green-lit along with this movie. Everyone concerned was convinced that this movie would be a huge hit, given its stellar line-up of filmmakers, so the deal was accepted. As it turned out, this movie was a flop, and Shampoo (1975) was the huge hit.
The White-Slave Traffic Act, better known as the Mann Act after its main sponsor Rep. James R. Mann (R-IL) (1856-1922). It was signed into law in 1910 by President William Howard Taft. It quickly became a tool for wives and others to blackmail men. It remained essentially unchanged until 1978 when provisions were added to cover child pornography. In 1986 the law's language was changed to make it gender neutral. Since these amendments, the law has been applied almost exclusively to child trafficking cases.
This movie was one of the two movies that Jack Nicholson made while waiting for production on One Flew Over the Cuckoo's Nest (1975) to start.
First of two films Warren Beatty and Jack Nicholson would make together - the other being Reds (1981).