These are great as they provide a safety net, allowing players to recover a portion of their losses. Most legalized online casinos will hold licenses, but there can be some exceptions. For example, sweepstakes casinos, which are becoming increasingly popular in the US, do not have licenses. Fill in your details, including name, email, password, and identity verification. Swain Scheps is a sports betting veteran and casino gambling expert based in Oregon. He has written extensively on the topic, including the well-received "Sports Betting for Dummies" and "Casino Gambling for Dummies" books.