Three gamblers from China, including a woman known as the “Queen of Sorts” for her card-monitoring skills, have lost a legal challenge to reclaim nearly $3 million in winnings and deposits they say were kept by Foxwoods Resort Casino based on false cheating allegations.

In a judgment entered June 1 in federal court in New Haven, U.S. District Judge Janet Hall ruled the gamblers couldn’t sue Foxwoods because the Connecticut casino’s owner, the Mashantucket Pequots, has sovereign immunity as an American Indian tribe.