Gov. Janet Mills signed a historic deal into law on Monday that will put Maine among a group of more than 30 states that have legalized sports betting.

Betting will wait, though. Regulators say betting could go live as late as 2024, which would be longer than the average state so far. That notion is prompting early pushback from tribes who will control the mobile betting market.

Here is how the business will be rolled out in Maine and the sticking points.

The measure will overhaul the state’s relationship with tribes in several ways, but sports betting is the most notable provision.