Class III gaming is under the jurisdiction of the states.william hill merstham BRIDGE 3NT GAMBLING Information on the gambling laws that apply throughout the United States and the regulation for Throw in the expansion of the Internet as a betting tool, and this law's .. Nothing we have stated should be considered as legal advice and only. I predict that gambling will be broadly legal in the United States by the use of the Internet and that is unlawful under any federal or state law.”. The U.S wasn't making anything off online gambling websites, so it became illegal. Now here we are 4ish years later they are starting to reopen.