A bit of information that maybe helpful to know is that online gambling is illegal in the United States, unless you are gambling at a location that has legalized gambling. Where the bet is placed makes the determination of where the transaction takes place ie. if I place a bet in Kansas, and gambling is illegal in Kansas, then I just made an illegal wager.
What is important to know is the government does not go after every person gambling online because it would be a never-ending and costly ordeal. There are just too many people gambling online in the US. Think of everyone playing holdem, sports betting, horses, etc. There aren't enough G-Men out there to go nab everyone. Plus, the courts and jails would be overflowing. Instead, the government focuses on the people who run the gambling websites. If you run a gambling website in the US, they will get your ass. If you are from the US, and move to an island to start up an online wagering website, better make sure there are no extradition laws. Also, better make sure to never show your ass back in the US again because the FBI knows who you are and will be waiting.
Not many people actually know the law, and thought I would point it out as maybe helpful for your paper