U.S. laws related to Internet gambling (sorry, it’s largely illegal!)
The Unlawful Internet Gambling Enforcement Act of 2006 (link here
is part of the Security and Accountability for Every Port Act of 2006.
That bill (short name “the Safe Port Act”) was passed by the 109th Congress, was signed by President Bush and carried the number HR 4954, govtrack reference here.
The Gambling Act seems to be an extension of the Interstate Wire Act of 1961, link here.
Exceptions to the gambling ban include horseracing and fantasy sports.
The Insterstate Horseracing Act (1978, 2000) is here (at Cornell).