EDGEWOOD, N.M. (AP) — At the Indian Gaming Association’s annual convention in San Diego this week, two words have dominated the agenda: Prediction markets. On public panels and in closed-door meetings, tribal leaders have discussed the explosive growth of platforms like Polymarket and Kalshi and the potential threat to tribes’ hard-fought and heavily regulated place in the American gambling industry. Tribal gambling enterprises generate more than $40 billion a year, revenue that funds