In 2018, the U.S. Supreme Court struck down the federal ban on single-game sports wagering, allowing individual states to legalize sports betting. Nearly every state has at least considered legalizing sports wagering. By now, a majority of states (plus Washington, D.C.) have legalized sports betting, whether in-person (i.e., physical or retail), mobile, or both.
In many of the states that have legalized sports wagering, American Indian tribes own and operate casinos, and until the authorization of commercial sports betting, may have had exclusive rights to offer gaming at all. Under the federal Indian Gaming Regulatory Act of 1988 (IGRA), sports wagering is a Class III game, requiring an approved tribal-state compact to be in place. A growing number of tribes are considering or have opened sports books, either under existing compact provisions or following the negotiation of amended compacts.