Casino operator MGM Resorts has lost yet another round in its quest to overturn a Connecticut law granting a third casino to local tribal gaming operators.

In June, a federal appeals court rejected MGM’s bid to overturn a Connecticut court’s dismissal of MGM’s challenge of a state law authorizing a joint venture casino by the state’s two casino operators, the Mashantucket Pequot and Mohegan tribes, who respectively operate the Foxwoods Resort Casino and the Mohegan Sun gaming venues.

MGM had argued that the law, which allows the tribes to build and operate a casino off tribal lands, didn’t allow other commercial casino operators to bid for the third casino license, and thus ran contrary to the US Constitution’s Equal Protection and Commerce clauses.

On Monday, The Day reported that the US Court of Appeals for the Second Circuit had denied MGM’s bid for a rehearing of its appeal. The Court offered no reasoning behind its decision to reject MGM’s pursuit of a rehearing by either the same three-judge panel that ruled against the company in June or by a full slate of Court justices.