On August 23, 1994, the United States Congress passed the Federal Aviation Administration Authorization Act. Section 41311 of the law (the Gorton Amendment) prohibits any air carrier from installing, transporting, operating or permitting the use of any gambling device on an aircraft. This law applies to foreign airlines as well as to airlines based in the United States. As a result, gambling is banned on all international aircraft flying into or out of the United States.
Brian C. O'Donnell, Gambling to Be Competitive: The Gorton Amendment and International Law, 16 Penn St. Int'l L. Rev. 251 (1997).