The definitions are a good place to starthttps://www.bankersonline.com/regulations/12-233-002
(bb) Unlawful Internet gambling means to place, receive, or otherwise knowingly transmit a bet or wager by any means which involves the use, at least in part, of the Internet where such bet or wager is unlawful under any applicable Federal or State law in the State or Tribal lands in which the bet or wager is initiated, received, or otherwise made. The term does not include placing, receiving, or otherwise transmitting a bet or wager that is excluded from the definition of this term by the Act as an intrastate transaction or an intra-tribal transaction, and does not include any activity that is allowed under the Interstate Horseracing Act of 1978 (15 U.S.C. 3001 et seq.; see Sec. 233.1(a)). The intermediate routing of electronic data shall not determine the location or locations in which a bet or wager is initiated, received, or otherwise made.
If you are not sure what types of online gambling are legal in your state then by all means ask legal counsel.
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