Players in the USA look for online casinos that will accept US players. Since 2012 most online casinos shut down the the USA due to legal issues relating to allowing players. Not only was their issues legally but the options for purchasing credits was getting extremely difficult.
So at a point it was no longer worth the efforts after online casinos lost a lot of money from shady processors for credit cards and debit cards. Today there is a few online casinos that still allow USA players to join up and play the casino games. Even having a chance to win money is possible. These online casinos give players a no deposit bonus to allow play for real money. They are limited to the online casinos that are operating under the realtime gaming software. The games on realtime casinos are decent and they do have progressives so a player could hit a jackpot which would payout thousands. Just look for casinos with realtime gaming software and odds are you will be allowed to play.