"I think there are multiple signs of the sports leagues, including the NFL, taking a fresh look at this issue. In Delaware, casinos offer parlay bets on NFL games. While legal sports books could entice more people to place bets, the practice is already widespread. The leagues are concerned that the Supreme Court could allow sports gambling to become legal without those protections in place. If the court rules against the leagues, it would be up to the states to regulate gambling themselves until Congress steps in.

Source: ABC News November 27, 2017 15:56 UTC