The company is not seeking money in the lawsuits filed in at least seven states over the deadliest mass shooting in modern U.S. history. Instead, it wants federal courts to declare that it has no liability to survivors or families of slain victims under a federal law enacted after the Sept. 11 terror attacks.

MGM argues that the Oct. 1 shooting met two conditions of the law: it qualifies as an act of terrorism and federally certified security services were used at the venue where 22,000 concertgoers were gathered as gunfire rained down from the company's Mandalay Bay casino-resort.