Since 2005, the Seneca Nation has had a vision of a world-class gaming and entertainment destination in downtown Buffalo, N.Y.—a vision of transforming an old, industrial property, reminiscent of Buffalo’s past, into a key piece of the city’s future. On Aug. 27, 2013, the Seneca Nation welcomed the people of Buffalo to experience that long-awaited vision when it was fulfilled by the opening of the new $130 million...